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Neumann EQ and Tube amplifier
Author: Carlos Eduardo
Date: 11/19/2009
Hi all ,
I am new on this forum , and I need help from you guys .
As an 50 y old electronic engineer , dedicated only to repair and to restore vintage tube amps , by now I am playing around two big big problems .
1 ) I need the schematics of a NEUMANN tube amp , type
NVF 60 / 100 , circuit ( schaltung ) ZN 4227 . This is a tupe amplifier made by Neumann long time ago , that uses two 12AX7 ( ECC83 ) and two EL34 at the output .

2 ) I need to install a NEUMANN Equalizer , model W 491 A
but I don't have the pinout circuit , and don't know the supply voltage .

Please , does anyone can help me ??? Urgent !!!
Thanks in advance for any input .
Carlos ( from Brazil )

EDIT : Hi all , I have only one problem now , because I could find all about Equalizer W491 A on this site :
http://audio.kubarth.com/rundfunk/index. cgi#u
I hope it helps all of you .
Carlos  
 
Reply
Carlos Eduardo
11/19/2009
Martin Schneider/Neumann
01/05/2010
Carlos Eduardo
01/09/2010
Martin Schneider/Neumann
01/11/2010
Carlos Eduardo
01/15/2010