User avatar
Nickou
Posts: 278
Joined: Mon Jun 01, 2009 1:09 pm
Contact:

Neumann VG1 RIAA encoder

Post: # 5239Unread post Nickou
Mon Jun 01, 2009 1:14 pm

Hello ,
anyboby has the schematics of the neumann VG1 riaa encoder ???
many thanks
Yann

User avatar
mossboss
Posts: 2050
Joined: Sun Jul 01, 2007 8:18 am
Location: Australia.

RIAA Schematics

Post: # 5480Unread post mossboss
Wed Jun 24, 2009 6:30 am

Hey Yann
Have schematics for the SAL 74B RIAA circuits namely Drawing no's SAB 74 G and SAB 74 E Let me know if any value to you If one thinks about it they should be the same
Not sure when the "famous" Neumann curve withan extra roll off was introduced It would not do anyone any harm as it is up around 50 KHZ going from memory
Cheers

User avatar
cohearent
Posts: 67
Joined: Sat Jul 11, 2009 4:58 pm
Location: California, USA
Contact:

Post: # 9222Unread post cohearent
Tue Jun 08, 2010 10:37 am

Hi Yann,

The RIAA encoding in the VG1 was done passively IN the power amp. There is a step up transformer, then the RIAA, then the power amp

Best,

Kev
Kevin Gray

User avatar
motorino
Posts: 404
Joined: Wed Aug 24, 2005 4:53 pm
Location: Aragón, ZGZ
Contact:

Post: # 9224Unread post motorino
Tue Jun 08, 2010 10:45 am

Hi to all

I have VG66 schematics in .pdf....

Cheers

User avatar
Nickou
Posts: 278
Joined: Mon Jun 01, 2009 1:09 pm
Contact:

Post: # 9271Unread post Nickou
Fri Jun 11, 2010 7:38 am

Thanks Kevin for this info ,
I was imagining an esotheric design with tube active filter ..
The VG 66 schematics .. hmm
Marcos , do you have the copyright of this info ?

User avatar
motorino
Posts: 404
Joined: Wed Aug 24, 2005 4:53 pm
Location: Aragón, ZGZ
Contact:

Post: # 9275Unread post motorino
Fri Jun 11, 2010 1:10 pm

shhhh :wink:
Marcos

User avatar
Gerasim
Posts: 20
Joined: Wed Jun 08, 2011 6:52 am
Location: Moscow

Re: Neumann VG1 RIAA encoder

Post: # 28137Unread post Gerasim
Wed Dec 18, 2013 4:36 am

Hi. I repair Neumann VG 66. The schematics is very necessary. You can send to mail?

User avatar
Gerasim
Posts: 20
Joined: Wed Jun 08, 2011 6:52 am
Location: Moscow

Re: Neumann VG1 RIAA encoder

Post: # 28274Unread post Gerasim
Thu Jan 02, 2014 4:45 am

Hello. Maybe who has a scheme of the SI 66-R block (CIRCUIT BREAKER)? It from Neumann VG-66 rack. I can't deal with circuitry. It is a lot of rare microchips.
circut breaker.jpg
You do not have the required permissions to view the files attached to this post.

Post Reply