U47-style bodies - who can make one?

[natek]

if you can get on the $100 ballpark range for what u drew up it will be a happy day!

 

[Nora]

Nice!!

Think it's really getting there

I vote for amphenol connector. I never really liked xlr7 pins connectors.

Isn't the C091 series also used in newer nemanns ? (149, 150, etc)

 

[Martin B. Kantola]

Amphenol has a 97 series that is much larger

Yeah, those look heavy duty enough Also available with gold plating! Don't like 7-pin XLR either, 6 pins is the limit and then it has to be real Neutrik gold plated.

Will try to get someone to measure the missing bits, I'm far from my studio at the moment. Can you please try to post a pic with the measurements needed? Not sure I understand your text version 100%, English is my third language, sorry.

Martin

 

[Moby]

I vote for amphenol connector. I never really liked xlr7 pins connectors.

I like amphenol but XLR7 is widely available  :-\

 

[Martin B. Kantola]

Why 7-pin? Those pins bend so easily. You can manage with 5-pin if the pattern switch is omitted or on the microphone itself (omni and cardioid). You can have fig-8 too with minor mods.

Martin

 

[mitsos]

I'm looking into other options on the connector.
Amphenol has a 97 series that is much larger, and would probably look more "balanced" as Martin put it.
The cost will likely be twice the Amphenol-Tuchel C091 series.
But we're still talking about $10 a connector--still affordable in my opinion.


I think the goal should be to have these made, finished, and shipped for $100 USD or less.
That's not bad, right?
China would probably cost half that much, but you get what you pay for.

I'm all for the original Amphenol. $5 is $5 after all...

I'm desperately trying to find someone local to make rack cases for me. I'm hoping to get this resolved soon, and hopefully the guy will have the capabilities to make the mic body also.. In either case I will probably prefer to make my own (unless someone makes it abroad REALLY cheap) because getting anything shipped to my small town in the middle of nowhere from abroad takes forever.

 

[Moby]

Mistos, where are you from  ???

 

[Nora]

One thing to consider:

Burdij updated his M7 mounting ring BM thread today and I was wondering if the height of the capsule would be like the original when matched with this design.
As most people here have M7's without mounting rings, it could be wise to make sure we get the right height.

Where did you find that price for the amphenol 97 connectors ?
Farnell sells most for around 25-50eur each !

And the chassis model seems to have four screws, no circular mounting ?
I really like the look of it though !!

gr
arno

 

[bradb]

Can't stress it enough, thumbs up to everyone for the great collaboration!


Oh, one more thing:  If we reduce the number of pins on the connector then we're going to have way more cost and hassle putting a switch on the body.  Let's keep the pattern switch on the PSU for simplicity and for those who will use this body for cardoid only designs.

7-pin!

and one more additional thing:  I think I'll be with a U47 all weekend recording at a studio... sooo, post graphically what you need and I'll give a shot at measuring.

 

[Igor]

I am in for Neutrik 7-pin connector.
For many people it will be hard to find Amphenol connector for cheap.
Just my $0.02.
Anyway, if body comes _with_ connector (and cable part),
it does not matter which connector is used,
if this is good quality of course.

 

[seavote]

martin. many thanks. i will post a photo of the measurements i (we?) need over the weekend. things are crazy at my home right now so i cant get it posted till then.
Edit:  bradb ,just read your post about this weekend so here is the picture.

http://i140.photobucket.com/albums/r34/seavote/u47measure.jpg

the numbers(red) in the drawing correspond to the measurements in my post above(i think on last page) thanks. ask if you have ????
for the radius you would need to make up gauges with different radius's. or if all else fails match the radius on the mic with a common object. dime ,quarter. nickel, soda bottle cap etc.(hey i'm trying to get this done and its better than nothing)
as for the connector plate you would have to remove the head basket. great if you can but im thinking that may not be possible. any of these measurement will help out. thanks to both of you .

 

[stitch-o]

wow...

you guys are unstoppable!

(looks like I'll need two)

 

[Igor]

People, please, stop talk, make some mic bodies!!!!!!
;D

 

[Skylar]

Regarding the connector:

I'm looking at the Amphenol 97-3101A16 and 3106A16 (7pin).

http://www.mouser.com/Search/ProductDetail.aspx?R=97-3101A-16S-1Pvirtualkey65400000virtualkey654-97-3101A-16S-1P

http://www.mouser.com/Search/ProductDetail.aspx?R=97-3106A16S1Svirtualkey65400000virtualkey654-97-3106A-16S-1S

I just ordered them from Mouser to check them out.
In quantity, they are ~$20 for the pair. Purchased in single quantities, they're ~$28 a pair.

I'm think of using the 3106 for the mic mody (I've made an alternate version of the end cap to accommodate).
And the 3101 for the cable. This is not how they're really intended to be used, but I'm going to see if it's at least possible.

It may work great...it may not work at all.
If it doesn't work, I think I'm back to the Amphenol-Tuchel C091-series, though I really would like to find a larger connector.
Can anyone find a 7 or 8 pin circular DIN connector that's 1"-1.125" (25-28mm) diameter?



Regarding capsule mounting:

Perhaps the most important measurement(s) we lack is where the capsule sits in the head basket.
Getting the internal volume of the the head basket is also critical.
We really need to know the distance from the top of the grille mesh (measured from the inside) to the disc on which the capsule sits.
Then we need to know the distance between the disc on which the capsule sits and the center of the capsule.

We should make the capsule height measurement widely available.
If the mount you have is too short, just use washers/perspex discs/etc to bump it up to where it needs to be.

IF we can get these measurements, I will alter my capsule mounting disc so that the internal volume of my head basket design matches the original.
Then, once you get the proper capsule height and mesh combo on your DIY u47, you should be cooking with crisco.

~Skylar

 

[Moby]

People, please, stop talk, make some mic bodies!!!!!!

Skylar, can you send me some rough drawings with dimensions (metric dimensions please) so I can check for material and craft price. Then, you can take your time to fine-tune everything. Also, I will have all info about available tube diameters. I already checked that but I'm not sure about price. Here's the factory I contacted about http://www.fbc-m.com/products.php#tvrde , as you can see diameters are available from 5-76mm with wall thickness starting from 0.5mm  ;D

 

[mitsos]

Mistos, where are you from  ???

Hi Moby, I live in Brazil.

 

[Moby]

Mistos, where are you from  ???

Hi Moby, I live in Brazil.

Cool 

 

[Skylar]

Updates:


-new version of end-cap to allow use of larger Amphenol 97-series.

-added a groove in the capsule mounting disc, providing a place for the mesh to go.

-put holes in capsule mounting disc for wiring and capsule shockmount

-filleted the edges of the head basket


The larger 97 connector does look much better than the smaller C091.
Once I receive the samples that I ordered, I'll model them in greater detail and adjust hole in the end-cap if needed.
I'll also be able to determine if these connector will work in this application or not.
This style of end-cap should be cheaper to machine.

How is the hole arrangement on the capsule mounting disc? More holes? Less holes? Different spacing/arrangement?


Moby,
A metric version will take a little time to prepare, but I'll work on it.

 

[natek]

Great Job again Skylar, Impressive!  ;D I wishi had one right now!!

 

[Skylar]

Mitsos,

Is this what you meant on the rails? (Of course the hole config could be done in any way--this is just an example)

If so, we can definitely have something like this made, BUT it will be a much more expensive part to make because...

A: it can't be done with standard bar-stock (it must be cut from a larger bar-stock)
B: it has bends on two different axes (XZ and YZ)
C: two separate parts are required for each mic body (rails are mirror image of eachother and NOT interchangeable)
D: more holes required.

It would be way cheaper to just add some L channel to the existing design, which would also give people more flexibility on their mic innards.
Some people like PCB, some like point-to-point.