kante1603

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #520 on: January 07, 2014, 03:44:47 PM »
Beautiful craftsmanship!!!  :) If you ever decide to make those pcb brackets again would you consider making me a pair. I have been wanting to do the exact same thing and have been trying to figure out a way to make them at home. I imagine a CNC would help  ;D Great job!
You might consider some of these,just cut to needed length:
http://www.reichelt.de/Distanzhuelsen-etc-/KARTENHALTER/3/index.html?&ACTION=3&LA=446&ARTICLE=9190&GROUPID=3365&artnr=KARTENHALTER&SEARCH=Kartenhalter

@Markus:Very neat work indeed (...but I told you that in the other forum already ;D...).

Best regards,

Udo.


ding

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #521 on: January 07, 2014, 04:29:04 PM »
You can do something like that on your own without a CNC, but you have to make 2 parts instead of 1:



Make these 2 parts (e.g. 2mm plastic or wood... or pertinax from a PCB...) and screw or glue them together like a sandwich...


...markus :-)

Great idea!!!

audiophreak

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #522 on: January 07, 2014, 06:43:15 PM »
Markus_Krippner    WOW  !!!     That's Gorgeous !!!
" Music washes away from the soul, the dust of everyday life "   ... in loving memory of my Father.

avieira

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #523 on: January 07, 2014, 11:47:23 PM »
Does anyone know where I can find some knobs similar to the ones in this pic? 

kante1603

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #524 on: January 08, 2014, 12:40:42 AM »
Does anyone know where I can find some knobs similar to the ones in this pic?
Welcome to the forum.
I used Sifam knobs on mine (please see reply #487).Although mine are grey you can have them in black too.Same for the coloured inlets,you have a very big choice there.Available in nearly any usual size and any shaft diameter.
Don't know where you are located,here in germany I sourced them from Sibalco.

Best,

Udo.

rmaier

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #525 on: January 08, 2014, 12:43:17 AM »
@ Markus... WOW!!! Bin ein bisschen neidisch... ;)
"Even if you don't know where the destination is of the sounds that you originate, it's worth getting it right at the start." - Rupert Neve

audiophreak

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #526 on: January 08, 2014, 10:08:36 AM »
Does anyone know where I can find some knobs similar to the ones in this pic?

  I used these , the color caps are separate pieces - http://catalog.selcoproducts.com/category/collet-knobs
" Music washes away from the soul, the dust of everyday life "   ... in loving memory of my Father.

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #527 on: January 26, 2014, 01:37:00 AM »
hey there,

What's a rough costing in parts for a stereo set of these?
As in how much to shell out over the total project [boards/components/case etc] so I can work out my budgets
Any rough figures/ideas much appreciated :)

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #528 on: January 30, 2014, 09:36:05 PM »
Ok sorry for the same question. What are the best pots for this build. I want to build an 8 channel version so I need a lot of pots. They will be off board. I would like to have center indent and possible switched for the frequencies. Also for an 8 channel version can someone suggest a PSU? I am going to do a DB25 input and output. A knob suggestion would be welcomed also.

Daniel

kante1603

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #529 on: January 31, 2014, 01:13:15 AM »
Ok sorry for the same question. What are the best pots for this build. I want to build an 8 channel version so I need a lot of pots. They will be off board. I would like to have center indent and possible switched for the frequencies. Also for an 8 channel version can someone suggest a PSU? I am going to do a DB25 input and output. A knob suggestion would be welcomed also.

Daniel
I have answered all of these questions except of center indent pots (this is new) because you asked me for them via PM,even sent pics from my build at starting point.
Didn't you read them?
Also the knob suggestion is just three replies back.....

Udo.


Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #530 on: January 31, 2014, 09:13:34 AM »
I guess I was asking the knob question in relation to a potentiometer question. I live in the US but it seems the omeg pots are hard to find. Just looking for a good combination. I did take the information you sent me. Just looking for different options.

Thanks

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #531 on: January 31, 2014, 12:14:54 PM »
Will these pots work?

http://sensing.honeywell.com/index.php?ci_id=3108&la_id=1&pr_id=27657


You can use any conductive plastic potentiometer. Manual wiring is of cource needed with those types that don't fit mechanically on the pcb. Carbon potentiometers are not recommended. They start to scratch quite soon because the circuit is dc coupled.

kante1603

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #532 on: January 31, 2014, 12:39:56 PM »
Will these pots work?

http://sensing.honeywell.com/index.php?ci_id=3108&la_id=1&pr_id=27657


You can use any conductive plastic potentiometer. Manual wiring is of cource needed with those types that don't fit mechanically on the pcb. Carbon potentiometers are not recommended. They start to scratch quite soon because the circuit is dc coupled.
So you have the answer already,it says "carbon element" in the description.So better not use them.

And about your center indent idea:It could be done best with a stepped pot or building a switch in as suggested.The idea behind it is that standard center indent pots do have tolerances which sadly means that the mechanical center position will not exactly match the half of the resistance.It will be slightly off and then cause a little change of the sound when one thinks it is flat.
Of course there will be a marginal infuence even with built-in switches because the audio still runs through the i/o stages.

Best,

Udo.

ArnoldLayne

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #533 on: February 01, 2014, 11:01:48 PM »
I found these as an alternative to the expensive P11 pots. Would they be better than Omegs ?

kante1603

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #534 on: February 02, 2014, 05:56:29 AM »
I found these as an alternative to the expensive P11 pots. Would they be better than Omegs ?
Which ones does your question refer to?

Udo.

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #535 on: February 10, 2014, 02:51:55 PM »
Ok found this pot on Mouser website. Anyone know if one could make a dual gang pot from this? This is a great pot with 11 dents (positions) but is only 1 gang. Anyone know if you could modify it to have 2 gangs? Like adding the stacks and resealing the pot.

http://www.mouser.com/Search/ProductDetail.aspx?R=P081N-271F2CBR10Kvirtualkey57700000virtualkey858-P081N271F2CBR10K

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #536 on: February 11, 2014, 03:23:13 AM »
What is the best spot for an attenuator in this EQ?
Should be easy to implant in a ready build EQ.
Maybe the best at the first OP amp output?
« Last Edit: February 11, 2014, 03:36:46 AM by Andreas Pfeiffer »

ArnoldLayne

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #537 on: February 11, 2014, 03:01:30 PM »
I found these as an alternative to the expensive P11 pots. Would they be better than Omegs ?
Which ones does your question refer to?

Udo.

Oh no, I forgot the link  :o
Now I don't even know what I was talking about...

avieira

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #538 on: February 14, 2014, 05:45:56 PM »
Could anyone kindly tell me if these toggle switches will work?  From the schematic they look like they will...but then again, I'm not very experienced at this. 

http://www.mouser.com/ProductDetail/Mountain-Switch/108-0008-EVX/?qs=sGAEpiMZZMvudeGI7i40XMpvUgTXR703%252bxnZru9LEbg%3d

Thanks!

kante1603

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #539 on: February 14, 2014, 06:49:06 PM »
Could anyone kindly tell me if these toggle switches will work?  From the schematic they look like they will...but then again, I'm not very experienced at this. 

http://www.mouser.com/ProductDetail/Mountain-Switch/108-0008-EVX/?qs=sGAEpiMZZMvudeGI7i40XMpvUgTXR703%252bxnZru9LEbg%3d

Thanks!
You mean for switching the bands on & off,right?
So yes,they'll work fine.

Udo.


 

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