GroupDIY

Project Specific Discussions => Microphones => Topic started by: rainton on November 30, 2015, 08:52:25 AM

Title: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE discussion thread
Post by: rainton on November 30, 2015, 08:52:25 AM
Hey guys,

here's the thing: I built a couple of tube mics recently, and since I'm located in Europe I always had the problem to get a nice vintage looking Mic PSU chassis for my projects.
Twice I ordered the PSU chassis from Collective Cases, and even though it looks quite nice:

a)  it's very expensive to have it shipped over here from the states (chassis + shipping + tax = approx. 125 Euros)
b) it's a  lot of drilling and extra work
c) the quality is ok, but it could be better


And since I made my first successful steps of designing some chassis with my LA2A chassis group buy I figured why spending a lot of money on a PSU chassis I'm not completely happy with, when I can design my own one instead :)

I wanted to have a really high quality chassis, as close as possible to the vintage original Neumann PSU chassis in terms of looks, and I wanted it to be a breeze to build a tube mic PSU with it.

So before I write a novel here, I'll post some pics of my finished prototype (for a MK-U47) and thenI'll explain:

OUTSIDE:

(http://i68.tinypic.com/2s8ms8k.jpg)

(http://i68.tinypic.com/wcib80.jpg)

INSIDE:

Here you can see this is not just the external chassis, but also a dividing panel inside with all cutouts, holes necessary to mount the components easily:

(http://i65.tinypic.com/29xusfr.jpg)

(http://i63.tinypic.com/23i791u.jpg)

In the last pic you can see the dividing panel also includes an integrated mounting bracket for the voltage adjustment pot.
The way this pot is installed allows for turning the pot  with a screwdriver through a small hole in the front of the chassis.

Here's a close-up:
(http://i66.tinypic.com/2el8803.jpg)

But not just that - there are also some holes in the bottom of the chassis where a pair of banana jacks (or something similar) can be installed. So if you want to readjust the voltage, you don't have to open up the chassis, you just flip it over, plug in your multimeter from the bottom and readjust the voltage from the front with a screwdriver:

(http://i64.tinypic.com/qxmkc2.jpg)

(http://i64.tinypic.com/2h54n4y.jpg)

Also there's a second mounting hole for another pot in the dividing panel if needed.
Basically, apart from the obvious cutouts on the outside(XLR, IEC, Binder, etc)  this chassis offers all holes necessary to mount:

- power transformer
- pcb(s)
- choke
- adjustment pot(s)
- cutouts for wiring/enough space for components

and most holes, (power tranny, choke, handle, feet, fastening holes for the lid...) even include high quality stainless steel nuts punched into the chassis for a smooth ride while mounting the components.  8)

The chassis itself is made from steel with a dark grey hammer finish and the material is thicker and more sturdy than e.g. the collective cases psu. The chassis is a 100% made in Germany.

Also the chassis will come with feet and a really nice & sturdy leather handle which feels great when holding the chassis. ( I always found the one on the cc-psu to be a little flimsy)

Here's my old Collective Cases chassis PSU I built for a U47 compared to the one I designed to be my new standard :)

(http://i63.tinypic.com/2q3doar.jpg)

On this picture you can see, the Collective Cases chassis definitely looks cool! And if you're located in the US it's great for the price!!

But I wanted to do something with a really authentic vintage look, that offers everything needed to make building a tube mic psu a breeze. And when I built this prototype - I'm telling you - I never had that much fun putting a mic psu together  ;D

Here's another pic without components:
(http://i67.tinypic.com/vnji2x.jpg)

The one I built is made for a U47 type mic, but actually I want this chassis to be suitable for as many tube mic projects as possible.
And I wrote above that the chassis will even include the holes for the pcb.
At the moment this includes only Zayance's MK-U47 psu pcb, but I want it to include the necessary mounting holes for all other popular tube mic projects out there.
Also my U47 pus doesn't need a pattern switch on the PSU so I didn't include it.  But I thought about a way to create a mark inside the chassis, so if you need a pattern switch, it's easy to drill a hole at that spot to install a pattern switch

So this feeler has 4 main goals:
- finding out if there's a greater interest in such a nice PSU chassis
- getting the dimensions of as many different mic PSU pcbs as possible, so I can include their correct footprints (mounting holes)
- how many want the cutout for the mic to be XLR, how many want the larger Binder/Amphenol, any of you want the original tuchel?
- should there be a hole for the pattern switch by default, or should I just leave a mark inside the chassis for the right spot to drill?

I'm aware the way I designed it is not the cheapest way to go (it will still be for European builders though), but it's definitely by far the easiest and most elegant way  :D

That said with all the above mentioned included we only reach an acceptable price range if we are as many as possible.
So including everything stated above with more than 20 chassis made we look at 119 Euros each. (excl. VAT if applicable)
If we reach more than 40 it'll come down to 105 Euros each.

And that's the 5th reason of this feeler which I want to open to discussion:

- Do you rather pay a price like this and have only high quality parts (e.g. thick leather handle) and the convenience of things like  punched in stainless steel nuts
- or do you rather save on a couple of bucks and sacrifice ease of use

Because - I'm sure it would be possible to design it a little cheaper (e.g. getting rid of the nuts, choosing a lower quality handle, no feet, etc) , but certainly not that much since the most expensive parts, are the complex dividing panel and the bottom chassis.

And I think with the Collective Cases chassis there's a great lower cost option out there - at least for US builders...

Ok, guys I'm really interested in your thoughts.

Here's THE LIST - please check if you're on it and if I got the correct number of chassis you want :)

lampas (2) PAID
DerEber PAID
Upacesky PAID
chefducuisine   (2) PAID
mrcase  PAID
dmp (4) PAID
bancho  PAID   
jafo  PAID
tskguy   PAID
Sredna (2) PAID
simonlef PAID
radiobug (2) PAID
kosi (2) PAID
craig (2)  PAID
stelin (2) PAID
CBR (6) PAID
jpharao (2) PAID
roger.unc (2) PAID
59flame PAID
olebrom PAID   
nattycee  PAID
flatresponse (2) PAID
fazeka    PAID
jackinthebox (2) PAID
Zander PAID
Mans Lundberg (2) PAID
gbruler (2)  PAID
Aaudio (2)  PAID
duantro PAID
mrerdat (2) PAID
rainton (3) PAID
poctop PAID
mellsonic (2) PAID   
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: lampas on November 30, 2015, 12:25:44 PM
Great work !!!

I am for two. And the price is OK for that quality !

Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: geebeeVIE on November 30, 2015, 12:45:12 PM
I'm in for two as well!
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: Pip on November 30, 2015, 01:21:35 PM
You should really consider a place to mount the resistors on a heat sink. They get hot! Beautiful job!
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: rainton on November 30, 2015, 04:21:30 PM
You should really consider a place to mount the resistors on a heat sink. They get hot! Beautiful job!

Thanks for your input Pip!   :)
I always used to leave about 1cm between the pcb and the resistors and it worked quite well so far.
A heatsink would be a great add-on but do you have any suggestions on how to include it into the design?

I'm afraid it's a little hard to find a universal solution that fits all possible pcbs, standoff heights etc.
Maybe it's easier to add something like a heatsink individually?

open for suggestions and ideas though
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: Winetree on November 30, 2015, 05:32:01 PM
These look great.
What do you think shipping to the U.S.A. ( 91730 ) would cost?
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: 0dbfs on November 30, 2015, 05:32:20 PM
You should really consider a place to mount the resistors on a heat sink. They get hot! Beautiful job!

Thanks for your input Pip!   :)
I always used to leave about 1cm between the pcb and the resistors and it worked quite well so far.
A heatsink would be a great add-on but do you have any suggestions on how to include it into the design?

I'm afraid it's a little hard to find a universal solution that fits all possible pcbs, standoff heights etc.
Maybe it's easier to add something like a heatsink individually?

open for suggestions and ideas though
If the dividing panel was cheese-grater style you could mount all kinds of PCB's, heatsinks, etc without drilling....

I also like the idea of the tweaker pot(s) and test points being behind a screw-out access panel for safety.

I might make the IEC inlet hole the style that allows the fuse to be swapped out without opening the unit.

Cheers,
jb
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: rainton on November 30, 2015, 05:54:11 PM
These look great.
What do you think shipping to the U.S.A. ( 91730 ) would cost?

The cheapest rate for 1 chassis is a small package which is 19 Euros, but this includes insurance for up to 50 Euros.
For up to 4 chassis it will be 35 Euros including insurance for up to 500 Euros and tracking number.

If there's more interest from several people in the US it might be worth considering to combine shipping from Germany to the US to keep the costs down :)
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: rainton on November 30, 2015, 06:26:14 PM
If the dividing panel was cheese-grater style you could mount all kinds of PCB's, heatsinks, etc without drilling....

I also like the idea of the tweaker pot(s) and test points being behind a screw-out access panel for safety.

I might make the IEC inlet hole the style that allows the fuse to be swapped out without opening the unit.

Cheers,
jb

Thanks jb - good point!
I get your idea :)
But  the dividing panel being made from solid steel is considerably  responsible for the overall sturdiness of the chassis. And adding several different footprints for pcbs is not the problem - it doesn't really affect the manufacturing expenses.
I just need to know the measurement beforehand, so I can include them in the design.
Also -  if going the cheese grater route it's very hard to tell which width of the gaps would be compatible of all kinds of tube mic PSU pcbs...chances are a screw hole sits exactly on one of the "ribs" and then it all becomes a little complicated and less elegant ;)


Regarding the fuse: You actually don't have to open the unit to change the fuse. As you can see in my prototype unit theres a dedicated fuse holder with a small plastic cap which says "fuse". You can just turn the cap and pull it out to swap fuses.
I thought about an IEC inlet hole with integrated fuse holder. That's what I'd usually do in a modern design, but I wanted it to be as close to the original as possible.
The way I did it is exactly how Neumann did it back in the days(same spot, same design).


Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: Phrazemaster on November 30, 2015, 11:48:45 PM
Wow this looks absolutely fantastic! If I didn't already have my cases sorted, I would certainly be tempted to join your party!

Nice work!!

Mike
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: DerEber on December 01, 2015, 05:02:45 AM
I want one :)

I´d take it just as it is. No need for more mounting holes etc. on my side. One could easily drill oneself.
Also Mic PSU is definitely a PTP project for me.

best Stephan
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: Upacesky on December 01, 2015, 10:54:02 AM
I'm in for one
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: chefducuisine on December 01, 2015, 12:47:21 PM
interested in two
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: Phrazemaster on December 01, 2015, 01:52:20 PM
Geez, the quality of items on offer around here just keeps getting better, and better, and better!!!!

Keep this up and we'll have to change the name to GroupDIFY (Do It For You)! ;)

Way to go Rainton. :)
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: mrcase on December 02, 2015, 08:16:09 AM
Looking great!
I´m in for one at least. I´d like the binder connector option! btw which amphenol connector were you thinking of? could also work for me... Not so keen on the neutrik one though.

great work!
best,
M
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: mrclunk on December 02, 2015, 10:09:34 AM
Really nice, would be in for two.
 
Btw, i really like the way the collective cases box has the over hang to protect knobs and switches. 
This would make it perfect!
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: rainton on December 02, 2015, 05:21:31 PM
Looking great!
I´m in for one at least. I´d like the binder connector option! btw which amphenol connector were you thinking of? could also work for me... Not so keen on the neutrik one though.

great work!
best,
M

Thanks!
Well I meant the Binder 961 series/the older Amphenol-Tuchel - they both look exactly the same.
Then there's the big old Tuchel connectors like the U47 used it for example. I still have a couple of them here.

My newly designed PSU pictured above houses a 5-pin Binder 961 Series and the Collective Cases PSU next to it houses one of those big 6-pin vintage Tuchel connectors. But they've gotten so very expensive lately...

So I would offer the PSU chassis with Binder 961series cutout on the Mic input side by default, but if there's enough request for an XLR in this spot or even a vintage Tuchel, I would try to figure something out :)
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: mrcase on December 02, 2015, 05:34:42 PM
So I would offer the PSU chassis with Binder 961series cutout on the Mic input side by default, but if there's enough request for an XLR in this spot or even a vintage Tuchel, I would try to figure something out :)

Great! I´m all for the binder connector. It´s the 691 series though, right?
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: rainton on December 02, 2015, 05:41:35 PM
So I would offer the PSU chassis with Binder 961series cutout on the Mic input side by default, but if there's enough request for an XLR in this spot or even a vintage Tuchel, I would try to figure something out :)

Great! I´m all for the binder connector. It´s the 691 series though, right?

oh yes of course - the 691series

edit: if I correct it now, both of our last posts look extremely weird  hahaha  ;D
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: rainton on December 02, 2015, 05:45:50 PM
Really nice, would be in for two.
 
Btw, i really like the way the collective cases box has the over hang to protect knobs and switches. 
This would make it perfect!

Funny - and I always found the Neumann PSU to look far more solid and compact because it doesn't have that over hang ;)
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: mrcase on December 02, 2015, 05:49:17 PM
I also like your original look better!  :D
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: JessJackson on December 02, 2015, 08:54:58 PM
yeah don't do the overhang.
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: Phrazemaster on December 02, 2015, 09:09:51 PM
I thought the point was to mimic the original Neumann cases...if you like the overhang look, go with one of Dan's! ;)
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: bancho on December 03, 2015, 05:13:54 PM
ouyea!  ;D
one for me please!
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: JessJackson on December 03, 2015, 07:44:46 PM
maybe just another two measurement pins and var pot hole for a heater section for everyone building for mic with separate heater circuit.

Jesse
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: jafo on December 04, 2015, 03:53:20 AM
I'm in for one :)
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: rainton on December 04, 2015, 06:24:21 AM
maybe just another two measurement pins and var pot hole for a heater section for everyone building for mic with separate heater circuit.

Jesse

I'll consider that ;)
Just need to find a place for it. Maybe I can  design it the way the second pot can be adjusted from the bottom...
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: trans4funks1 on December 04, 2015, 09:06:51 AM
The case shown seems like a very nice construction.

The idea of using pre-punched holes for the handle, feet, cable connectors and switches appeals to me. This is because I will want them in the same place as has been predetermined.

The idea of pre-punching holes for the transformers and boards does not appeal to me. I  rather have full flexibility for parts sourcing and prefer a construction where every hole has a purpose and is utilized. I can easily drill through a case with a battery powered drill.

A use of threaded inserts seems like good design but I prefer the long lasting usefulness of a simple nut and bolt.  A loose insert has too much potential to cause inconvenience. I will not enjoy paying extra for that.

The pre-punched test point holes do not appeal to me because I regard using potentiometers for supply trimmers as a compromise and I want to adopt the use of wirewound variable resistors. If I want to trim the supply I will open the case. If I change my mind about potentiometers I have a drill.

Having said that I am in the USA and already own 4 collective case PSU boxes which I thoroughly enjoy.  It seems like the cases proposed here will end up priced at a premium for USA customers so my thoughts about the design may not be as pertinent as the ideas of those who are more likely to make a purchase.

If the case ends up being exactly as I prefer then the pricing doesn't matter. If it ends up seeming as a compromise with a premium price then the price will weigh heavily on a decision.

I normally avoid sharing opinions... who needs more of that stuff :-) but I do like the case shown in the OP very much and if they do end up as nice as I might hope for I will be excited to use them.

Thank you.

Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: tskguy on December 04, 2015, 09:36:29 AM
Count me in for one.... ;D
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: Sredna on December 04, 2015, 08:14:38 PM
Great,  I'd be in for two pieces for that price!

Basic holes for IEC, power, fuse and in/out (handle) would be enough for me, I'd prefer to drill the holes for TX, PCBs etc myself.
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: rainton on December 08, 2015, 06:03:50 AM
Great! Interest for 17 pieces already! :)
I think I'll take probably 3 myself, so we're crossing 20 by now. I'll just keep the Feeler open until we get 40 - shouldn't take too long considering this thread has been alive for only one week now ;)

This will make it cheaper for all of us.

Martin
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: simonlef on December 08, 2015, 11:33:42 AM
Looks amazing!

I would be interested in one so please add me to your list.
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: radiobug on December 10, 2015, 07:56:38 PM
I like them. Put me down for 2 please.
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: o3misha on December 13, 2015, 01:28:57 AM
Great idea to make easy access to the adjustment of the output voltage. Congratulations! Also willing to buy a couple.
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: kosi on December 15, 2015, 02:08:49 PM
I'm in for 2 !

thanks for doing this
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: craig on December 15, 2015, 04:24:23 PM
Im in for 2 thanks
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: stelin on December 15, 2015, 05:14:19 PM
Put me down for 2 please.
Great project!
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: rainton on December 17, 2015, 11:15:32 AM
Great we crossed the 30 pieces mark!! Ride on guys - we'll make it!!  ;)
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: CBR on December 23, 2015, 07:17:52 PM
Nice! I'd like 3 of them! Maybe 4.
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: jpharaoh on December 23, 2015, 07:39:01 PM
I would like two. 
I just saw this a couple of days ago so I am trying to research which mics I want to build.  I am leaning towards a Telefunken 251 and a Neumann U87. 
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: roger.unc on December 23, 2015, 09:04:56 PM
I would like two, please. Thanks!
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: 59flame on December 24, 2015, 06:44:16 PM
I'll take 1 please!
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: olebrom on December 26, 2015, 04:27:20 AM
I would like to buy one please:)
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: nattycee on December 27, 2015, 11:01:54 AM
I take one please !!! Looks fantastic !!! ;)
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: flatresponse on December 30, 2015, 12:03:54 PM
Hi rainton,

I´m in for two of these beautiful looking Neumann inspirated PSU cases for my upcoming build of two M49s with aputis body.
When will they be completed ?
Since I´m in southern Germany as well (Bietigheim-Bissingen, BaWü), it´s only a short way to go.

Happy New Year
Best
Manfred.
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: fazeka on December 30, 2015, 02:59:13 PM
Would love one!
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: flatresponse on January 01, 2016, 06:18:29 PM
Hi rainton,

it feels we´re getting close to 50 already, so when will you start ?

I would like to give my 2 cents to the specifics:

No holes in the dividing panel needed for me. One can easily drill themselves by dremel or similar machinery.
Mounting bracket for trim pot is very handy to have, so is the hole in the front to adjust the voltage trim without opening the case. Then the holes in the bottom for banana jacks are handy too.
A second mounting hole for another pot in the dividing panel is nice.

What I find difficult to judge is, whether one would really need all the holes for power tranny, pcb, choke
and adjustment pots. Too specific, I prefer one model suited for more than one build. And hey, we´are DIY, at least a little bit !?

A happy new year to you,  maybe there are even more outside, waiting to order ?

Best
Manfred.
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: jackinthebox on January 04, 2016, 08:50:00 AM
I'll take one!
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: rainton on January 05, 2016, 08:25:24 AM
Hi rainton,

it feels we´re getting close to 50 already, so when will you start ?

I would like to give my 2 cents to the specifics:

No holes in the dividing panel needed for me. One can easily drill themselves by dremel or similar machinery.
Mounting bracket for trim pot is very handy to have, so is the hole in the front to adjust the voltage trim without opening the case. Then the holes in the bottom for banana jacks are handy too.
A second mounting hole for another pot in the dividing panel is nice.

What I find difficult to judge is, whether one would really need all the holes for power tranny, pcb, choke
and adjustment pots. Too specific, I prefer one model suited for more than one build. And hey, we´are DIY, at least a little bit !?

A happy new year to you,  maybe there are even more outside, waiting to order ?

Best
Manfred.

Sorry guys I was on vacation with my family :)
Happy new year everybody!

Well I see we have over 40 units already!! Wow!
The thing is that the manufacturer will be closed for christmas holidays  until Jan 11th - so I would just wait until then and then come back to all of you with ordering details.

What I'd really like to know though. Some of you want the holes for the pcb etc. and some don't.
We could do like 25 with holes and the rest without?

Does anybody here have the mounting dimensions for the following PSU pcbs:

- M 49
- C 12
- U 67
- Elam250/251

If I include the holes and cutouts - I would like to do it for all of the above mentioned + the U47, so everybody can use the PSU chassis. It should be suitable for different mic models.
And I get the point about leaving some DIY to you - but believe me it was so much fun to just put the PSU together (when I built the prototype for a MK-U47) without having to do all the extra drilling.
But hey - this is a feeler, so whatever you guys want, we can try to find a way  if there's enough people wanting it :)
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: Zander on January 05, 2016, 08:45:02 AM
I'm interested in one too. But it depends on the time frame.
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: flatresponse on January 06, 2016, 06:26:23 PM
Hi rainton,

as for all the PSU PCBs there are two, that will be hard to get into a tight chassis like yours:
The C12 and ELAM 251 PSU design is mainly based on modifying the chinese TP100-PSU.
The U67 PSU I have is a modification of the above mentioned  TP100 as well.

I could take the time on thursday measuring the dimensions of the C12 PSU, which I suppose is identical to the ELAM 251.
What I have as well is the zayance U47 PSU PCB.

And the M49 PSU is just ordered, will take some time.
And I still have 2 mic&mod U47 PCBs lying around, could take the dimensions of them as well.

I must admit, it sometimes is fun to just assemble fitting parts without having to drill here and dremel there.
So if you would have a PSU case fitting the M49 PCB, I would go for the benefit.

Best
Manfred.
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: fazeka on January 06, 2016, 10:07:16 PM
What I have as well is the zayance U47 PSU PCB.
+ 1

I must admit, it sometimes is fun to just assemble fitting parts without having to drill here and dremel there.

+10  ;D
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: Mans Lundberg on January 07, 2016, 12:28:54 PM
Great work! I'm interested in one, for a 47 build. Please add me to the list!

I think you should keep the exclusive look of the prototype.
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: poctop on January 07, 2016, 12:53:06 PM
I can supply all info regarding my psu Pcb if this worthed
D67
Elam251
D49
269c
D12
D47
Def47
Etc...
Pm  me and we will touch base
Best dan
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: flatresponse on January 07, 2016, 01:31:29 PM
Hi Dany,

it´s great to have you and your knowledge base on board !
I´m sure, rainton will get in touch with you very soon.

Best
Manfred.
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: duantro on January 07, 2016, 11:13:17 PM
Looks great. I'll take one!
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: rainton on January 11, 2016, 04:06:13 PM
Ok great news everyone!

Poctop offered me to send me all different kinds of mic PSU pcbs he has in stock, so I can measure them and make the chassis compatible with as many different mic PSUs as possible!

I will open the preorder today, so everyone of you wanted to be on the list will receive a message from me soon.

Once I collected all the funds it'll take approx. 4 weeks until  I have the finished PSU chassis here.

The standard chassis will have the holes and cutouts to fit as many projects as possible - definitely the U47, M49, U67 and the M269. I'm not sure yet about the C12 and the ELA M 250...we'll see when I received Dany's pcbs :)

But I consider to have a certain number of dividing panels with no cutouts at all if there's enough requests...
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: rainton on January 12, 2016, 11:22:24 AM
... LIST MOVED TO THE FIRST POST ON PAGE 1 so it's easier for everyone to follow :)
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: mrclunk on January 13, 2016, 08:56:06 AM
Sorry but i'll have to come off the case list for now.
Building fet 49's instead of valve versions so i won't need the PSU's.
Sorry..
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: dmp on January 13, 2016, 02:57:02 PM
If it's not too late, I'll take 4 cases - shipping to USA.
My understanding from the thread is the cost per case is 105 euro and shipping for 4 cases to the US will be 40 euros?
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: rainton on January 13, 2016, 06:32:28 PM
If it's not too late, I'll take 4 cases - shipping to USA.
My understanding from the thread is the cost per case is 105 euro and shipping for 4 cases to the US will be 40 euros?

Just in time ;)
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: rainton on January 14, 2016, 12:19:18 PM
Sorry guys it takes me a little longer than expected to send out all the payment details - more than 30 people from all over the world ordered more than 50 cases and I created a large spreadsheet to enter all necessary information so I don't get anything mixed up.
I still haven't heard back from 5 people who wanted to be a part of the group buy. I assume they don't hang out on GDIY everyday so it might probably take a couple of days until they see my message.

Anyway, from the rest of you I gathered all information I need to calculate the total for each and everyone of you, so I'll definitely start to send out the payment details soon :)

Martin
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: rainton on January 15, 2016, 12:41:27 PM
Still haven't heard back from following members:

- geebeeVIE
- o3misha


If you want to be on board please let me know as soon as possible!
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: mrerdat on January 15, 2016, 09:50:59 PM
I hope it's not too late yet but could I get on the list for 2 PSUs? Thanks!
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: fazeka on January 18, 2016, 03:46:13 AM
Hi,

Paid! =)
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: rainton on January 18, 2016, 05:31:14 PM
GREAT NEWS EVERYBODY!!

I just got Dany's pcbs in - and forwarded them right to my friend's CAD.
Our measurements clearly show that indeed:

WE CAN MAKE THE CHASSIS FIT ALL THE PCBs!!!
Even the M251 and C12! :)

That means the chassis will be ultimately plug & play with all of Poctops pcbs and the latest revision of Zayance's MK-U47 and MK 47!  ;D
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: Sredna on January 18, 2016, 07:14:52 PM
Paid!  8)
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: duantro on January 18, 2016, 07:18:06 PM
paid  ;D
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: lampas on January 19, 2016, 03:51:19 AM
Hm, would you check if you got my PM ?

Regards
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: nattycee on January 21, 2016, 11:04:12 AM
Paid  ;D


Looking forward !!! Gonna be great  ;)

THANKS !!!!!
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: 59flame on January 21, 2016, 01:50:15 PM
paid      thanks
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: gbruler on January 22, 2016, 07:08:14 AM
GREAT NEWS EVERYBODY!!

I just got Dany's pcbs in - and forwarded them right to my friend's CAD.
Our measurements clearly show that indeed:

WE CAN MAKE THE CHASSIS FIT ALL THE PCBs!!!
Even the M251 and C12! :)

That means the chassis will be ultimately plug & play with all of Poctops pcbs and the latest revision of Zayance's MK-U47 and MK 47!  ;D

Hey! these are great news, I want 2 if it's not too late :)

Thanks
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: rainton on January 30, 2016, 06:32:13 AM
Ok,
All but one group buy member have paid and I will place the order to have the Mic PSU chassis manufactured on Monday!  :)

From now it should take 3-4 weeks until they're done.

Let the journey begin  8)
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: rainton on February 02, 2016, 03:30:14 PM
Folks,

the chassis is ordered.
I think it'll be awesome. We took some time last week to tweak our final layout in the CAD, so the production version will be able to hold all different parts and components necessary for all mics mentioned before.
It allows for mounting the smaller choke needed for the U47, the bigger choke needed for the M49 and others, the additional 20VAC transformer from Poctop's M49 etc. BOM  and even the 2nd adjustment pot necessary for the U67 incl. a very cool option to measure the voltage from outside - similar to the first voltage pot (that was already there in the first prototype).

It was quite a challenge to fit in all the footprints of all of Poctop's pcbs as well as Zayance's pcb while still fitting in all cutouts, holes, etc. for the other components. I hope it will work the way we expect it but we'll only know 100% for sure if all possible mic models were built with this PSU chassis ;)

Up to now I really think this one deserves to name "the ULTIMATE Mic-PSU chassis"  8)

Another problem we had which we tried to solve as smooth as possible was the pattern switch. Some mics such as the MK-U47 don't need the pattern switch on the PSU, others do.
But neither did we want all PSU chassis to have a gaping hole on one side when no pattern switch is needed, nor did we want those who need it to fumble around, measure around where to drill a hole, so it's centered etc...
What we came up with is a tiny hole of 0.5mm on one side that will (hopefully) pretty much disappear underneath the varnish from outside, but from inside it will be clearly visible.
So, in case you need a pattern switch you just need to enlarge this hole with a 10mm (.4 inch) drill and voilà - you have your hole exactly in the right spot  :D

anyway I'll keep you posted!
Martin
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: flatresponse on February 03, 2016, 11:48:51 AM

Up to now I really think this one deserves to name "the ULTIMATE Mic-PSU chassis"  8)


Hi Martin,
chapeau for this logistic masterpiece !
I think so as well and I´m looking forward,

Best
Manfred.
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: fazeka on February 03, 2016, 06:17:11 PM
Hi Martin,

That 0.5mm hole was a great idea! Love it! =)

Can't wait for this. =)

Cheers,
Chris
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: burglar on February 13, 2016, 05:45:31 AM
Can I get in on this?
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: south2577 on February 20, 2016, 07:17:13 PM
Hi Rainton
Am I too late? Interested in one chassis.
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: rainton on March 01, 2016, 11:24:03 AM
Good news everybody!

The enclosures are expected to be here by the end of this week!
We had a slight delay because the color I wanted was not available for industrial production.
Especially not for powder coating.

So I chose a slightly brighter hammer finish - you probably won't notice the difference anyway  ;D
But this slowed me down a little.

Anyway I heard back from the manufacturer that the powder coated chassis should be ready this week!
I'm excited :)

I'll keep you posted!
Martin
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: mellsonic on March 01, 2016, 06:36:17 PM
 :D :D :D :D
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: Banzai on March 01, 2016, 07:05:16 PM
Gorgeous case. Hope it all comes out as expected as that's brilliant work  ;)
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: rainton on March 09, 2016, 07:19:49 PM
Alright guys.
The cases should have been here Friday already, but they finally arrived TODAY!!
Hooray! I don't what took them so long but now they are here - and they look indeed gorgeous!!  :D

Here are some impressions:

arrival
 (http://i65.tinypic.com/rb0fux.jpg)

(http://i68.tinypic.com/4r73iu.jpg)

(http://i65.tinypic.com/2chkky1.jpg)

inside:
If you look closely you can see two things: to the right of the two holes there's another pair of holes - pre-cut.
It's actually very hard to see on this pic, but if these two extra holes are needed for another measuring spot you can break-out the
metal there and voilà you have two more holes ;)
The second thing I'm talking about is we had the dividing panel laser engraved...
(http://i66.tinypic.com/2pydyls.jpg)

You can see it better here:
This panel is the only part not powder coated to it's blank industrial steel. When we cut in all the different holes for the various pcbs fitting this enclosure we realized it gets quite confusing when you want to place your pcbs and look for the according mounting holes. So we decided to have the shapes of all different pcbs + theirs according names laser engraved so you'll find your way easily :)


(http://i66.tinypic.com/2bv8uo.jpg)

on the last pic you can see how we solved the problem with the second adjustment pot (some mics need one)

(http://i65.tinypic.com/2s0n0n8.jpg)

I'll post some more pictures later on where I'll add some annotations what components are supposed to go where in the box...

...shipping will finally start tomorrow.

One more thing. In all the places where I'll add the screws to the kit (handle, feet, lid, mounting screws for the dividing panel) the holes are threaded.
For the chassis for Europe we added some more threads in a couple of places (e.g. mounting holes for the choke,...) For those chassis that go to the rest of the world we didn't - for one reason.
The threads are metric (European standard). So if you live in the states and your chassis had holes with metric thread it might be difficult to find a store that carries metric screws, right ;)

Anyway I hope you like the result. I'll start to build some M49 and a U47 PSU and keep you posted how it goes :)
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: fazeka on March 09, 2016, 08:41:48 PM
Hi Rainton,

Looking good!  ;D

So if you live in the states and your chassis had holes with metric thread it might be difficult to find a store that carries metric screws, right ;)

I would say it could be easier finding metric screws in the U.S. than it would be to find SAE screws in Europe. Maybe!  ;)
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: duantro on March 10, 2016, 12:38:01 AM
These look like top notch work!  It shouldn't be too hard to find metric screws over here in the US.   I've got a m49 pcb from Poctop ready to be dropped in here also.
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: jafo on March 16, 2016, 04:34:08 AM
Get mine. Incredible well constructed and built. Thanks! 8)
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: Kraume on March 16, 2016, 06:06:19 AM
Looks amazing! :o
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: rainton on March 16, 2016, 09:03:12 AM
Extremely glad those of you who received it already like it!

While building my M49 PSU I discovered some very minor flaws I will cover later in another post.
Also I'll add some dimensions of the cutouts you might need when sourcing parts such as switches, fuse holder, IEC socket etc.

One thing though that is a slight problem for me now I discovered while shipping the PSU chassis to you guys.
Because they're made of solid steel they are heavier than expected and that means the shipping fees I calculated don't cover the actual shipping fees.
In Germany with DHL we have following steps: up to 5 kg, up to 10kg, up to 20, up to  31.5kg.

I thought 2 chassis would still be well below 5kg but as much as I've tried to reduce the weight of the packaging while still keeping the chassis safe enough for their ride - 2 chassis incl. packaging weigh 5.6 kg.

That means the above mentioned concerns all of you who have ordered 2 or more chassis. Within Europe the difference is only 5 Euros which is not much but considering I have to ship over a dozen of those packages within Europe it does matter.

Where it matters even more is to the US and Canada where the difference is in shipping fees is 14 Euros.
Again there are at least 10 people from the US or Canada who ordered two chassis...you see what I mean.

So I will have to work through the list getting in touch with all of those whom it concerns...

Martin
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: Sredna on March 17, 2016, 10:46:05 AM
Ok, PM me your account number and Ill transfer the 5€ ASAP! :)

Danke, Anders
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: rainton on March 17, 2016, 08:17:51 PM
I received some mails and it seems all of those who received their chassis already, really like it! :)

I also started building some m49 power supplies and really enjoy it a lot  :D

But as I mentioned before I also found some very minor flaws while building my M49 PSUs.
Since we initially planned to have the chassis varnished and not powder coated we underestimated how much the powder coating would add to the surface. As a result some IEC sockets wouldn't fit the cutout and I had to use a file to remove some powder coating on the edges of the IEC cutout. The same goes for the cutout for the fuse holder.

Not a big deal but worth mentioning.

Also, since powder coating is an "all-or-nothing"  affair - the entire base of the chassis is powder coated. If the chassis were varnished I would have left the inside of the base chassis blank steel.
If you want to make sure you have good continuity (for grounding) between the dividing panel and the base I'd suggest you remove some of the powder coating around the screw holes for where the dividing panel gets mounted to the base:

(http://i63.tinypic.com/v5zr87.jpg)


It might not be necessary, but it'll definitely improve your case ground and then you can definitely use any of the unused holes in the dividing panels to create a star ground.

The big PLUS with powder coating though - these little boxes are very robust and impact and scratch resistant!!


What's really cool is that our plan with the tiny hole for the pattern switch worked  8)
It's barely visible but if you look very closely, you will see it on the side where the Binder and XLR connectors are supposed to be mounted.
So if you need this switch just place a drill on this tiny hole and make it larger - if you don't - you probably won't even notice the hole ;)

Also I loved how easy the laser engraving makes it to place the pcbs - you have no idea how confusing it looked without that - just dozens of holes all over the place  ;D

Anyway - I'm trying my best to ship all cases asap, but it's almost 60 cases altogether I have to ship, so it's a lot of work...
...if you haven't received your chassis yet - hang in there!

Martin
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: tskguy on March 25, 2016, 09:34:45 AM
Hey man,

Looking forward to receiving mine.. Did you notify everyone that you shipped? I ordered one and Im in the US. Can you let me know the status??

Regards Eric
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: rainton on March 25, 2016, 09:40:44 AM
Hey man,

Looking forward to receiving mine.. Did you notify everyone that you shipped? I ordered one and Im in the US. Can you let me know the status??

Regards Eric

No I didn't notify everyone because it was like 60 cases I shipped and since I'm working full time it's quite a challenge ;)

Yours was shipped on March 16th - I'll send you the tracking number in a PM
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: tskguy on March 25, 2016, 09:59:24 AM
No worries, Thanks for letting me know...

Eric
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: duantro on March 25, 2016, 02:13:56 PM
Mine showed up today!! Looks great. Thanks for putting the effort to make these great quaulity and to do this in such a timely manner. Very happy.
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: rainton on March 25, 2016, 06:07:20 PM
Gentlemen - just FYI:

All preordered chassis have been shipped.  8)

If you want me to send you a tracking number just let me know and I'll send it to you.   :)

Again - so glad those who have received it already like it. It was a lot of work and your feedback is really appreciated!

BTW I ordered some more chassis than needed, so I still have some left. If you were late to the party and still want one try your luck and write me an email to: martin[at]analogvibes.com
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: duantro on March 25, 2016, 10:44:15 PM
Do you have a link to the power light that you used? Looks nice.
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: rainton on March 26, 2016, 05:01:48 AM
Do you have a link to the power light that you used? Looks nice.

It's a Fender pilot lamp. I bought it at banzaimusic.com but I'm sure in the States you can get them in any guitar shop  ;)
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: stelin on April 01, 2016, 02:34:16 PM
My two chassis turned up today.
Excellent work. Very high quality and workmanship. I'm impressed. And all the screws and even the rubber feet was included!
Thank you, Martin!

- Stefan
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: nattycee on April 04, 2016, 01:02:27 PM
YES !!!!  ;D
I just picked up my chassis and its pure eye-porn 8)…..the thing is so pretty that i regret that i didn't bought like 50 pieces….just to have and to look at them !!!

BIG UP Martin !!! This is an example of 100% awesomeness…. :P

Thaaaaaanks a lot !!!

Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: 59flame on April 04, 2016, 09:19:38 PM
got mine! Thanks Martin they look great!
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: fazeka on April 05, 2016, 03:54:24 PM
Hi Rain,

I do see that some are getting them now but have not received mine yet. Do you know when mine went out? You can PM me instead of replying here.

Thanks,
Chris
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: rainton on April 05, 2016, 07:07:39 PM
Hi Rain,

I do see that some are getting them now but have not received mine yet. Do you know when mine went out? You can PM me instead of replying here.

Thanks,
Chris

mail sent :)
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: mrerdat on April 05, 2016, 10:00:52 PM
I definitely agree with everyone on the thread about the quality of the PSU.  Excellent work!!

I have a question about mounting the 20v transformer for a M-49 build.  I've tried lining it up with every hole on the mounting plate but can only get the holes to line up when it is arranged diagonally as seen in the attached picture.  It's a bit close to the choke.  Can you confirm if this is correct or if there is another mounting spot?

Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: rainton on April 06, 2016, 04:30:19 PM
I definitely agree with everyone on the thread about the quality of the PSU.  Excellent work!!

I have a question about mounting the 20v transformer for a M-49 build.  I've tried lining it up with every hole on the mounting plate but can only get the holes to line up when it is arranged diagonally as seen in the attached picture.  It's a bit close to the choke.  Can you confirm if this is correct or if there is another mounting spot?

Spot on! ;)
I chose the position because it seemed the best position so one has still access to screws/nuts on both sides and leave enough space for soldering the wires to the 20VAC transformer.

I'm working on a little guide to show you guys the easiest way to put a PSU together with my chassis. But I'm just so busy at the moment so it's taking a little longer.
Sorry about this.
Martin
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: poctop on April 07, 2016, 12:25:11 PM
Hi Martin ,
just a little note to say your PSU Enclosure is by far one of the best product I have seen on the market ,
it really has that vintage look and vibe to it :) Kudos.

In Summary

A) Beautifully designed ,
B) Beautifully thought on every aspect especially the pot stand heat sink capability of it
C) Very nice person to deal with
D) Very Sturdy and Professional
E) Just Awesome  8)

= will definitively buy from you again  when I have a bit of time available I will put down a link to your case on my website
just let me know how you would like it to appear.

Keep up the Good Work.
Best,
Dan,
www.vintagemicrophonepcbkit.com


 

Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: duantro on April 09, 2016, 02:20:08 PM
I definitely agree with everyone on the thread about the quality of the PSU.  Excellent work!!

I have a question about mounting the 20v transformer for a M-49 build.  I've tried lining it up with every hole on the mounting plate but can only get the holes to line up when it is arranged diagonally as seen in the attached picture.  It's a bit close to the choke.  Can you confirm if this is correct or if there is another mounting spot?
Thanks for asking this, I was scratching my head while doing this as well!
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: fazeka on April 11, 2016, 06:22:40 PM
Got it on Saturday! Looks great! Thank you!

Hi Rain,

I do see that some are getting them now but have not received mine yet. Do you know when mine went out? You can PM me instead of replying here.

Thanks,
Chris

mail sent :)
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: rainton on April 12, 2016, 07:17:59 PM
I recently finished a PSU for an M49 with one of my PSU chassis.

Due to the square shape of the M49 PSU pcb I placed it on the far right on the dividing panel to give enough room for the bigger choke necessary for this build.
I realized that it gets packed on the IEC connector side and I might look for a better position in a future revision of the chassis.

For all other mics the pcbs are placed more towards the center of the chassis so it's not that much of a problem.

Anyway I thought since the space to the right of the M49 PSU pcb is so crowded I decided to do a little 10 step guide to show the order of steps which will make the build as simple as possible.

Before step one of this guide you should look for the tiny hole on that side of the chassis where the XLR and binder connectors go in. It's located approx. 2cm from the top edge. Enlarged this hole to fit the pattern switch necessary for M49 builds. Then mount all other connectors (XLR, Binder, IEC, fuse)

Then step 1 of my little guide here - place the mounting studs for the pcbs first:

(http://i66.tinypic.com/280rxxf.jpg)

Step 2 is mounting the power transformer and step 3 is mounting the choke. Also visible in the pic you see the mounting holes for the 20VAC transformer

(http://i63.tinypic.com/35hjzw4.jpg)

So step 4: mounting the 20VAC transformer:

(http://i65.tinypic.com/wqr994.jpg)

Step 5 is preparing the shaft of the voltage regulation pot with a metal saw so you can use a screw driver later to turn it:

(http://i68.tinypic.com/zv6ame.jpg)

When you're done mount it to the dedicated holder:

(http://i67.tinypic.com/15ybu6h.jpg)

From the outside it should look kinda like this:

(http://i68.tinypic.com/2wh2kyd.jpg)

Step 7 is to feed through all wires from the power transformers and connect them to the IEC, fuse holder and power switch.
Step 8: connecting the power wires to the pcb, soldering the choke wires and the wires leading to the adjustment pot to the pcb,
then mount the pcb (you might also connect a wire to 0V for case grounding already)
Step 9: mounting the pilot lamp holder (the mounting studs I used to mount the pcbs were rather long, so I decided to use some shrinking tube around the lamp holder to avoid contact between the lamp holder and the stud - see in the next pics)
Step 10 is wiring it all up :)

(http://i68.tinypic.com/fa99xy.jpg)

(http://i63.tinypic.com/25hfj2d.jpg)

And this is what it looks like from the other side:

(http://i66.tinypic.com/2wmqnte.jpg)


I hope this will help you a little ;)

If you build different mics with this chassis please feel free to post some pics here so we all can learn from it!

Martin
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: dmp on April 13, 2016, 10:21:21 AM
Is this the binder connector to use with the case?

 Series 691: Female receptacle
    Termination Solder Termination
    Shielding non-shielded
    Number of Contacts 7
    Plating Silver
    Protection IP 40
    Locking System M25 Locking
Part #: 09 0044 00 07

Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: rainton on April 13, 2016, 11:58:31 AM
Is this the binder connector to use with the case?

 Series 691: Female receptacle
    Termination Solder Termination
    Shielding non-shielded
    Number of Contacts 7
    Plating Silver
    Protection IP 40
    Locking System M25 Locking
Part #: 09 0044 00 07

yes :)
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: dmp on April 13, 2016, 12:03:29 PM
Anyone interested in a group buy for the male and female from Binder? The pricing goes down for a larger order. I need 4.
 
Series 691: Male plug   Part # 09 0041 00 07
Additional Pricing
1-9 > $35.87
10-24 > $29.14
25-49 > $24.66

Series 691: Female receptacle   Part # 09 0044 00 07
Additional Pricing
1-9 > $27.30
10-24 > $22.18
25-49 > $18.77
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: duantro on April 13, 2016, 02:03:49 PM
Anyone interested in a group buy for the male and female from Binder? The pricing goes down for a larger order. I need 4.
 
Series 691: Male plug   Part # 09 0041 00 07
Additional Pricing
1-9 > $35.87
10-24 > $29.14
25-49 > $24.66

Series 691: Female receptacle   Part # 09 0044 00 07
Additional Pricing
1-9 > $27.30
10-24 > $22.18
25-49 > $18.77
Crap, I didn't see that. I just got mine in the mail. They are pretty pricey with single orders.
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: fazeka on April 14, 2016, 03:38:09 PM
I would be. Is this for the MK-U47?

Chris

Anyone interested in a group buy for the male and female from Binder? The pricing goes down for a larger order. I need 4.
 
Series 691: Male plug   Part # 09 0041 00 07
Additional Pricing
1-9 > $35.87
10-24 > $29.14
25-49 > $24.66

Series 691: Female receptacle   Part # 09 0044 00 07
Additional Pricing
1-9 > $27.30
10-24 > $22.18
25-49 > $18.77
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: dmp on April 14, 2016, 03:42:55 PM
It's a 7 pin connector so would work for that one.
I'm doing a pair of EF47 and maybe m49s if I ever get bodies from the GB.
Maybe I should post in the black market
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: rainton on April 14, 2016, 03:46:32 PM
I would be. Is this for the MK-U47?

Chris

Anyone interested in a group buy for the male and female from Binder? The pricing goes down for a larger order. I need 4.
 
Series 691: Male plug   Part # 09 0041 00 07
Additional Pricing
1-9 > $35.87
10-24 > $29.14
25-49 > $24.66

Series 691: Female receptacle   Part # 09 0044 00 07
Additional Pricing
1-9 > $27.30
10-24 > $22.18
25-49 > $18.77

I guess a 7pin connector will work for most tube mics...so yes.

...I also built MK-U47s with the Binder 5-pin connector and it worked great ;)
For the M49 you need 7pins though
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: duantro on April 15, 2016, 12:41:14 AM
Can anyone tell me what size the test jacks are? I ordered Johnson/ Cinch banana jacks from Mouser here in the states, and they are too small of a diameter than the cutouts are. I don't see the diameters listed on any data sheets. Are the "test jacks" bigger?
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: 59flame on April 15, 2016, 01:56:27 AM
got mine at radio shack 4mm i think
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: rainton on April 15, 2016, 03:51:40 AM
These are the test jacks the cutouts are made for:

http://uk.farnell.com/hirschmann-testmeasurement/972355101/receptacle-25a-4mm-quick-connect/dp/1011408?ost=972355101&selectedCategoryId=&categoryName=All+Categories&categoryNameResp=All+Categories

If you look for the item number I'm sure they're available at other stores too.

In Germany they're also available here:

http://www.voelkner.de/products/518180/Sicherheits-Laborbuchse-Buchse-Einbau-vertikal-Stift-4-mm-Rot-1-St..html
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: duantro on April 15, 2016, 02:56:35 PM
It's weird that Mouser Cinch docs don't have any diameter measurements.  I've found, and ordered  4 mm ones from Digikey. Thanks!
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: rainton on April 15, 2016, 03:28:47 PM
It's weird that Mouser Cinch docs don't have any diameter measurements.  I've found, and ordered  4 mm ones from Digikey. Thanks!

But please make sure the diameter of the mounting hole fits. 4mm is only the diameter of the connector pin.

The cutout for the connectors posted above is 12mm and so is the cutout in my chassis.

Here's some more measurements:

cutouts for:

power switch: 12mm
fuse holder: 12mm
Pilot lamp holder: 18mm
XLR:  D series
IEC: mounting hole distance: 39mm (sockets with 40mm will also fit)
Test jacks: 12mm

Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: fazeka on April 16, 2016, 05:05:51 AM
FYI: I just ordered Pomona #72913 from Mouser.

Can anyone tell me what size the test jacks are? I ordered Johnson/ Cinch banana jacks from Mouser here in the states, and they are too small of a diameter than the cutouts are. I don't see the diameters listed on any data sheets. Are the "test jacks" bigger?
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: mrerdat on April 16, 2016, 02:56:15 PM
Here are the parts from Mouser that definitely will fit the PSU cutouts.  I know for sure because I got some parts wrong (the banana jacks) the first time!  8)  Interestingly enough, Mouser just told me to destroy the parts that I requested to RMA because it's not cost effective for them to take back the parts but refunded the cost for them anyway.

Let me know if you have any better alternatives, but here's what I have installed on my PSU:

basic:
565-5931-0 - Pomona  banana jack (black)
565-5931-2 - Pomona banana jack (red)
691-2BL62-73 - DPDT power switch (close but has enough clearance away from toroidal transformer)
576-03455LS1H - Fuse Holder
568-NC3MD-LX-B - Gold Plated Neutrik Male XLR3 connector
562-703W-00/07 - IEC receptacle (as mentioned in the thread earlier, needs to be sanded down)

for M49:
611-A10303RSZQ - switch for polar pattern (for M49 build, not using a pot on mine and the one in Dany's PSU BOM has a actuator that is too long)
45KN012-GRX -  pointer knob, inexpensive and looks great IMO

For the lamp I just bought a Fender style lamp holder and a jewel from here:
https://www.tubesandmore.com/products/P-L110
 (https://www.tubesandmore.com/products/P-L110)
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: jpharaoh on May 01, 2016, 08:57:36 PM
I apologize if I missed it in an earlier post but what is the part number for the chassis connector that supplies the power to the mic, not the 3 pin XLR.  I know that depending on different mics this might have different number of pins.  but I wanted to know where I could start looking.
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: stribor1 on May 12, 2016, 09:26:51 AM
Anyone knows this web-shop?
https://www.don-audio.com/Power-Supply-Mic-Enclosure-MPS-700

They sell the same enclosure for 289€, pretty steep.
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: rainton on May 12, 2016, 06:43:33 PM
Anyone knows this web-shop?
https://www.don-audio.com/Power-Supply-Mic-Enclosure-MPS-700

They sell the same enclosure for 289€, pretty steep.

That's my chassis - he bought some from me, but the price he sells them for was a typo I guess  ;D
I wrote Aaron and he corrected it - now the webshop shows 158,27 Euros.

BTW: I also have a few Mic PSU chassis left - the price here on group DIY for members is still 105 Euros excl. VAT ea.
124,95 Euros incl. VAT if applicable...

In case somebody wants one - just let me know  :)
Martin
Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: mrerdat on May 13, 2016, 02:13:31 PM
I just finished 2x M49 power supplies yesterday!  8)
(http://i67.tinypic.com/28ko7wg.jpg)

I had to turn the PCB upside down in order to be able to mount the fender amp pilot lamp (mentioned a few posts above) because otherwise it would get in the way of C5.  The divider panel also had to be bent outward slightly by hand (like 1/4" or so) to accommodate the lamp. A minor issue to me, but worth noting for others who want to get a pilot lamp with different dimensions to be able to mount the PCB right side up.  I am also eschewing terminal blocks because they are more expensive and less reliable than soldering cables onto a PCB.
(http://i68.tinypic.com/zsk6ms.jpg)

Transformer side (the resistor up top is something I had lying around and I'm using it for the lamp):
(http://i64.tinypic.com/x1ilv8.jpg)

Side-by-side view:
(http://i63.tinypic.com/33545ye.jpg)

Here's the audio connector side.  I'm debating if I want to leave the polar pattern switch unlabelled since it looks good already. Also I think the XLR looks so much better with the panel inside of the chassis.

(http://i68.tinypic.com/211tkzs.jpg)

So some pro/cons/critiques to help with version 2 (if Rainton is updating these in the future).

Pros:
- Looks awesome! Couldn't be happier with the appearance. This is debateable but I think it looks way better than old beat up original Neumann PSUs ever did.

- The handle feels/looks super high quality and is better than anything I've come across elsewhere.   It's thick and is probably less likely to get chewed up over time like thin leather handles are.

- Minimal metal working: for M49 just drill the hole for the cutoff switch and use a cutoff wheel to trim/notch the heater pot. The tiny predrilled pilot hole is an awesome touch and made things a lot easier.  By comparison my collective cases U67 power supply has a lot of small flaws in the metal work because I am not skilled with metalworking and had to drill/countersink all the holes myself.

- Time/money saved due to lack of metalworking needed to be done.  I'd say that you'd save easily 3-5+ hours and whatever money you'd end up spending on drill bits or other hardware. Easily worth the extra money this PSU case costs over other options.

Cons:
- I wish there was a bit more room for M49 PCBs to be farther away from the IEC Sockets.  It wasn't a huge problem but more clearance would help.

- The 6 chassis mount screws for the outer part of the enclosure.  It was sort of an ordeal putting the cases back together and ironically the hardest part of assembly because although the 2 screws on top went in little difficulty, it took a lot of work to align the 4 corner holes.  It feels like a 2 person job where you need one person to squeeze the PSU so that the chassis holes line up and the other person operates a screw gun.  I don't know if this is related to having the cases powder coated, but it feels ultra tight. Since I did it myself, I had to insert the screws at an angle to get started (very bad for screw threads).  I actually broke 2 screws inside the chassis for one of my cases and need to use a screw extractor and rethread the M3 holes.  Yikes.  Perhaps if these holes were drilled after the paint job (I know, easier said than done) the issue could easily be fixed?

Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: rainton on May 17, 2016, 07:13:17 PM
Thanks for your extensive feedback!! :)

I'm really glad you like it and also I'm sorry for the inconvenience some spots might have caused.

As mentioned before the powder coating added more thickness to the material than I expected (my prototype wasn't powder coated) - hence the problems you experienced with mounting the 4 screws that hold the lid in place.

Also the position of the M49pcb will be changed if there's a future revision. If I remember correctly I also mentioned that the decision to place the M49 PSU pcbs at this position was made in order to make space for the bigger choke necessary for the M49 build.
The good thing for everybody else who's not building an M49 is, that the M49 PSU pcbs is the only one placed that far to the right.

Regarding the pilot lamp holder I would recommend using a fender style pilot lamp holder available at any guitar shop. If you want to keep it simple and use a 110-130V pilot lamp (available on the web)

For what it's worth - I built two M49 PSUs and one U47 PSU with my chassis already and even though it can be a little tough to fasten the 4 screws to mount the lid as mentioned above, I never had the problems mrerdat described in terms that:
- I always managed to mount the lids alone
- I never broke or damaged any screws while doing so

None-the-less: This is definitely something to be changed in a 2nd revision! As well as the placement of the M49 PSU pub and some other minor flaws I came across and I'm grateful for all your feedback, because only that will make a better product in the end.

So thanks again mrerdat for taking the time to give us such a detailed impression of your builds, thoughts and suggestions!
Martin

Title: Re: FEELER: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE!! OPEN!
Post by: stelin on May 19, 2016, 02:06:05 PM
I had the same problem with the 4 screws that hold the lid in place.

I had to force the lid down to get the screws in. It was clear that it was the powder coat that was the problem: Have you seen the show American Chopper? The bike parts never fit when they come back from powder coating. Same problem.  :-)

After I extended the 4 holes in the lid downwards about 0.5mm with a round needle file, the problem was gone.  It only took five minutes per enclosure.
Title: Re: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE discussion thread
Post by: rainton on August 01, 2016, 12:16:57 PM
Hey guys,
I'm preparing a White Market thread at the moment where I'll offer my chassis, so I renamed this thread to remain the place to discuss all build related questions and discussion


Martin
Title: Re: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE discussion thread
Post by: rainton on September 06, 2016, 04:38:56 AM
Mic PSU and some other chassis kits I did along the way are now available in the White Market:

http://groupdiy.com/index.php?topic=63423.0

:)
Title: Re: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE discussion thread
Post by: Aaudio on September 21, 2016, 07:17:15 AM
Hi,
I wonder about the screw dimensions for the MK-U47 PSU build. Does anybody know?
Title: Re: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE discussion thread
Post by: Humner on October 24, 2016, 01:33:58 AM
I want to try and use this chassis for another project.

Do you have dimensions of the inside of the PSU chassis. Can that middle internal separator panel be removed?

Thanks
Title: Re: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE discussion thread
Post by: rainton on October 24, 2016, 05:50:40 AM
I want to try and use this chassis for another project.

Do you have dimensions of the inside of the PSU chassis. Can that middle internal separator panel be removed?

Thanks

The dimensions of the chassis inside are:

Length:   236mm
Height:   130mm
Width:    116mm

Of course the internal separator can be removed - it's screwed in with two screws  ;)

Title: Re: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE discussion thread
Post by: rainton on May 13, 2017, 06:16:22 PM

We're working on a Rev.2 version of it.
This new revision will also support Chunger & Matador's universal tube mic pcbs (both passive and active) - so it will basically support ALL known mic pcb kits out there  8)

The  laser engraving in the dividing panel will reflect the changes and we made it easier to see which pcb belongs where.

Also we corrected some minor flaws - the M49 pcb will now be moved more towards the center of the chassis to allow for easier
wiring and we corrected some screw holes that made it difficult for some to attach the lid since powder coating had added more to the surface thant we expected. Now these screws should go in easily ;)

You can preorder as off today - and we plan to have the new ULTIMATE Mic PSU chassis kit MkII ready for shipping in 4 weeks.
Title: Re: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE discussion thread
Post by: Voodoobeat on May 28, 2017, 05:52:48 PM
finished it today. thanks, that saved a lot of time and looks great!
I'm just wondering what would be the best way to ground the mk u47?
For now i have the pcb, binder input, xlr out and test-jacks on a star ground..
Title: Re: THE ULTIMATE Mic-PSU chassis - VINTAGE NEUMANN STYLE discussion thread
Post by: donaudio on August 09, 2017, 11:31:29 AM
Hello everyone,

I just want to let you guys now we finished a small batch of nice polar pattern plates (https://www.don-audio.com/Mic-PSU-polar-pattern-scale-plate) for Martins awesome project. Here is a pic:

(https://www.don-audio.com/mediafiles/Bilder/scale-plate2.jpg)

If someone is interested in it, they can be found here (https://www.don-audio.com/Mic-PSU-polar-pattern-scale-plate).

For questions, just give me a message.

Best

Don