AB763 - Reverb return to PI

[RobBozic]

Hi guys,

Can someone tell me how returning the reverb signal to the 100n PI (pin 7) input affects the tone in a typical blackface style topology?

Thanks
Rob

[Willabe]

I'm not sure you can because AB763 has the NFB on pin 7 of the PI tube.


                     Brad     

[RobBozic]

Oh yeah, I forgot about the NFB.  Anyway if there wasn't any NFB, would there abenfit to returning the reverb to pin 7 via the 100n cap?

Thanls
Rob

[tubeswell]

I also added some other considerations on your post over at ampgarage