Michael Tibes

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #180 on: May 27, 2009, 06:52:09 AM »
I'd love to see these. I have been wanting to have some hi/locuts...

Michael


Gold

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #181 on: May 27, 2009, 07:19:46 AM »
I'm graphically challenged ;) I could scan it and send it to you. It folds out and would have to be scanned in a few pieces.

They are 18 dB/oct. I use them every day and find them very useful and very good sounding. I would be very enthusiastic to see boards done. The switches have an odd form factor and would be difficult to replace. It would be nice to remake them with currently available parts.

zayance

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #182 on: May 27, 2009, 10:04:52 AM »
Is there any way of getting PCB for this project?

signalflow

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #183 on: May 28, 2009, 12:06:56 AM »
Is there any way of getting PCB for this project?

Read this thread

http://www.groupdiy.com/index.php?topic=10776.0

-Casey
The shortest distance between two places is a nap.

zayance

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #184 on: May 28, 2009, 08:18:47 AM »
 :-[ i missed that one, thanks.

skal1

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #185 on: May 28, 2009, 08:02:08 PM »
Hi


did you get the chance to  scan that schematic of HT75 HPF/LPF ,i would like to build a dedicated HPF/LPF thingy

 Bless

skal1

outoftune

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #186 on: May 30, 2009, 03:32:13 PM »
Hi


did you get the chance to  scan that schematic of HT75 HPF/LPF ,i would like to build a dedicated HPF/LPF thingy

 Bless

skal1
highly interested in this as well. i have a friend who was asking about building some hpf/lpf's for him. i'd love to have some as well. if someone made a pcb, i'd buy quite a few.

outoftune

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #187 on: May 30, 2009, 03:39:30 PM »
also, not sure if TAW still has the pots in stock, but i did an order with all the resistors and caps from TAW. if anyone is building the w492, you can get everything expect the trim pots and opamps from TAW.

Gold

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #188 on: May 30, 2009, 06:26:11 PM »
I can scan it and send it to someone who can stitch the pieces back together and post it. Any volunteers?

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #189 on: May 30, 2009, 07:49:15 PM »
Not a graphic wonder, but i'll give it a try.


Gold

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #190 on: May 31, 2009, 02:41:54 PM »
I'll scan in on Monday. Send me your email address and I'll send it to you.

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #191 on: June 01, 2009, 11:00:06 AM »
Your inbox is full, but the email link in my profile should work.
You can send it there.

jarlehal

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #192 on: July 20, 2009, 07:25:47 PM »
Folks. I promised you my front panel (sticker) files a while ago. But then I couldn't find my memory stick.
Now, guess what!?! It turned up here the other day.

So here I give you my modest artwork. I used an app called InkScape. A great open source project.

http://www.jarlemari.com/diy/w492.svg

If there's interest, I have made some for my other projects aswell. I could host them on my web page.
I used the Sfernice pots btw.

iangomes

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #193 on: July 29, 2009, 01:53:14 PM »
are the boards gustav offers spaced for sfernice or omeg? just ordered some boards, need to get going on the pots.

thanks.

EDIT: i'm guessing by the timeline of the discussion that gustavs boards are the original with the 5.08 spacing. the 7.5mm board gerbers seem to have been posted later on. but, please correct me if i am wrong.

Same question...

stereokillah

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #194 on: July 29, 2009, 02:53:48 PM »
the gustav pcb isspaced for P11 vishay like sernife.
you can put it the omeg also but you need to twist the pin
if your neighbour is hunger .. don't give him fish, teach him how fishing ...

iangomes

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #195 on: July 29, 2009, 02:55:21 PM »
the gustav pcb isspaced for P11 vishay like sernife.
you can put it the omeg also but you need to twist the pin

Thank you my good man!

daggertX

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #196 on: August 02, 2009, 09:10:16 PM »
does it matter if the p11 pots are log vs linear? 

stereokillah

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #197 on: August 02, 2009, 10:10:29 PM »
10KLIN PA11QXF
it is in tha bom.
if your neighbour is hunger .. don't give him fish, teach him how fishing ...

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #198 on: August 07, 2009, 11:47:33 AM »
So I've finished this very nice project (Neuman W492 ;) ) but i have some trouble with the first filter. when i turn the P1 clockwise I get some very ugly pops. on the scope it looks like maybe some DC  or some very powerful distortion.
When i back it of a little is disapearing. I useing a tune for testing so its every time the bassdrum get's hit.

I sounds like the filter is ok, cause I can hear the "sweep"

The other three filters is ok - and sounds very good.

I'm using an unbalanced test signal from my soundcard ( pin1 + 3 to ground) is that a problem?

I have regulated the PT1 to 100 ohms before soldering.

I've checked for soldering bulbs, chacked the resistors (i used 619 ohm isted of 620 ohm - should be ok)
I've changed the NE5532.

I'm running out of ideas here.

TIA

Anders B
« Last Edit: August 07, 2009, 12:01:13 PM by AndersB »
2 x 1176, 1 x G9, 1 x Gssl, 1 x real Mctube preamp + +20 Stompboxes

stereokillah

Re: Neumann W492 equalizer DIY project (PCB docs added)
« Reply #199 on: August 07, 2009, 01:57:32 PM »
hello which potentiometer do you use for , perhaps you could see on this side
if your neighbour is hunger .. don't give him fish, teach him how fishing ...


 

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