Neumann V475-2A master fader

[marcus4audio]

Hello, how does the one insert master fader? Is it possible to use "a-b" & "c-d" points for that purpose?

 

[[silent:arts]]

Neumann just connected a W444-STA fader to the output of the V475-2A.
Done.

 

[marcus4audio]

Neumann just connected a W444-STA fader to the output of the V475-2A.
Done.

Yep, I understand.. But as far I know  W444-STA is the active fader, with some buffer inside.  I was thinking about passive fader like insert, inside the V475 module.

 

[Zeladius]

Hi everyone, I'm also a little new here, but I've looked at your schematic, I also have a pending project with this. I understand that in pins 12-13 and 18-19 there are some gain adjustment potentiometers, the following adjustment of main you would put it at the output of the unit, 6-7 and 24-25. It seems that in AB and CD they are insertion points per channel...

 

[zamproject]

It seems that in AB and CD they are insertion points per channel...

If a b c d describe nets you can notice they go to a second primary winding at the output trafo.
Not sure about the purpose of this, but don't look like insert...
Look more like a RLC interstage network, with some kind of coupling/feedback from output

 

[[silent:arts]]

a/b & c/d are 2,2mH inductors, located in the Mu metal case of the output transformer.

 

[zamproject]

So for you it's only for mechanical and isolation purpose ?

 

[[silent:arts]]

Yes, I guess Neumann just wanted the inductor shielded.

 

[Zeladius]

It seems logical...

 

[Zeladius]

I have seen that several propose making a bridge between A/B and C/D respectively. I also saw that the two 3300p capacitors are eliminated, and two other capacitors are also replaced following the line of A and D of 0.033 by 0.01 and those of the line of B and C of 0.015 by ones of 6800p or 3n3.. .but I haven't tried it yet! Does anyone know if this would be correct, if it is the mod to eliminate the filter...