therecordingart

PCB layout for PRR Vari-Mu
« on: March 21, 2006, 04:25:17 PM »
Does anyone have a layout for the PRR Vari-Mu?


gyraf

PCB layout for PRR Vari-Mu
« Reply #1 on: March 21, 2006, 05:32:41 PM »
don't think so. question been asked before..
..note to self: don't let Harman run your company..

ciminosound

PCB layout for PRR Vari-Mu
« Reply #2 on: March 21, 2006, 06:05:10 PM »
Kent did some work with PRR on this a while ago. I haven't built or tested this info personally but maybe others have...?

http://www.conditionedresponse.com/DIY/C5/index.html

 :sam:

Moby

PCB layout for PRR Vari-Mu
« Reply #3 on: March 21, 2006, 06:09:26 PM »
I have. Somewhere... Have to search a little...  :wink:
For microphone transformers,  BV.8,  Bv.11,  Bv.12, etc.. contact me at mobyelectronics at gmail dot com

12afael

PCB layout for PRR Vari-Mu
« Reply #4 on: March 21, 2006, 06:31:33 PM »
what is wrong with this?
http://www.conditionedresponse.com/DIY/C5/C5PCB.pdf

I etch it two days ago ,I just need a drill to finish it .
heavy metal is the law!!!

Moby

PCB layout for PRR Vari-Mu
« Reply #5 on: March 21, 2006, 06:44:27 PM »
Quote from: "12afael"
what is wrong with this?
http://www.conditionedresponse.com/DIY/C5/C5PCB.pdf

I etch it two days ago ,I just need a drill to finish it .

Yes, I have the same :grin:
For microphone transformers,  BV.8,  Bv.11,  Bv.12, etc.. contact me at mobyelectronics at gmail dot com

Kev

PCB layout for PRR Vari-Mu
« Reply #6 on: March 21, 2006, 07:21:08 PM »
as far as I know
Kent's site is still working and current
(we did think Kent's server was going to close)
it should agree with the stuff at the Factory

http://www.diyfactory.com/projects/diy12au7comp/diy12au7comp.htm

PCB
http://www.diyfactory.com/projects/diy12au7comp/C5PCB.pdf

PRR's original page
http://music-club.rutgers.edu/headfonz/comp5/Comp5.html
note how long ago it all was
PRR, May 2003

time does fly
 :cool:
Kev
DIY Factory

Svart

PCB layout for PRR Vari-Mu
« Reply #7 on: March 21, 2006, 07:35:37 PM »
It works.  that layout is good.  I built two, one for use, the other for playing around with various ideas like class A output and such.. i'm real close to having that done too.
Welcome to the GroupDIY leper colony! when something falls off, we just replace it with a tube!
occupation: General Electron Mayhem

Alesis X2 information repository:
http://www.theopiumdenproductions.

12afael

PCB layout for PRR Vari-Mu
« Reply #8 on: March 21, 2006, 08:16:11 PM »
Svart, what kind of transformers are you using?
heavy metal is the law!!!

NewYorkDave

PCB layout for PRR Vari-Mu
« Reply #9 on: March 21, 2006, 09:02:59 PM »
Sorry to be a grouch, but... geez, must there be a PCB for every project? Ya could wire that up on a piece of perfboard in less time than it takes to talk about making a PCB. I could understand needing a PCB if you wanted to make a hundred of 'em, but...


Svart

PCB layout for PRR Vari-Mu
« Reply #10 on: March 21, 2006, 09:36:16 PM »
for the input trafos I used the radio shack trafos that PRR suggested.  they work much better than you would think.. to the point of not noticing them at all.  for the class A output I am using sowter 8751(?) and ba283s.  I might try some edcor replacements too.
Welcome to the GroupDIY leper colony! when something falls off, we just replace it with a tube!
occupation: General Electron Mayhem

Alesis X2 information repository:
http://www.theopiumdenproductions.

therecordingart

PCB layout for PRR Vari-Mu
« Reply #11 on: March 21, 2006, 11:28:08 PM »
The only thing that I'm having a hard time rapping my head around is how to hook up the attack and realease.  I'm going to build a stereo unit, and what I'm reading on the websites and layout isn't sinking in.  Also....hooking up the meter since there are two meter sections on the PCB.  Do I just connect to one of them?

For the attack and release....it says on the layout something like from ATT to ATT/REL from REL on channel 1 then from REL TO ATT/REL from ATT on channel 2.  This is going over my head.

Any help?

Ptownkid

PCB layout for PRR Vari-Mu
« Reply #12 on: March 22, 2006, 12:38:23 AM »
Quote from: "NewYorkDave"
Sorry to be a grouch, but... geez, must there be a PCB for every project? Ya could wire that up on a piece of perfboard in less time than it takes to talk about making a PCB. I could understand needing a PCB if you wanted to make a hundred of 'em, but...


I remembered thinking the same thing the fist time I looked at the schematic, pretty light on the parts...

mikeyB

Matching on PRR varimu stereo
« Reply #13 on: March 22, 2006, 04:10:44 PM »
How good/accurate can the tracking of a stereo varimu be. Mastering buddy of mine likes the look of this but he don't want to master in MONO! :wink:
making better music!

Svart

PCB layout for PRR Vari-Mu
« Reply #14 on: March 22, 2006, 04:44:14 PM »
the PCB is layed out for a dual mono unit.
Welcome to the GroupDIY leper colony! when something falls off, we just replace it with a tube!
occupation: General Electron Mayhem

Alesis X2 information repository:
http://www.theopiumdenproductions.

bernatvm

Re: PCB layout for PRR Vari-Mu
« Reply #15 on: August 01, 2020, 07:30:26 AM »
Anyone still have the files to etch those PCBs? All the links are broken...


bernatvm

Re: PCB layout for PRR Vari-Mu
« Reply #17 on: August 01, 2020, 10:25:05 AM »
Is this a good layout for this project?


 

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