Carmen Ghia Circuit Question

I am building a Carmen Ghia Circuit and found a part of the circuit related to bias voltage +24V to pins 2 & dropped by a 470K R to 7 of the Phase inverter that I can't find an answer. Maybe someone on this forum has built one and has or can find an answer.

The original Carmen Ghia was built/converted from a Hammond AO 35. The schematic is attached. In the lower right section of Sch there is a R32 8.2K that is paralleled to ground with C19 a 25/50 cap.

On the reverse engineered layout by the Phoenix Project Layout (Pic attached)the 8.2K resistor is R7. There is no 25/50 cap shown coupled parellel to that resistor.

Also attached is a picture of an actual Dr. Z Carmen Ghia Gut shot. The R7 8.2K resistor is the fifth vertical component/blue resistor from left side of board with obviouly has no parelleled 25/50 cap attached.

My Question is: Does anybody know why this component is absent from the Dr. Z conversion of the Hammond AO 35?? I'd really like to know as I put the finishing toutches on this amp. Platefire :confused::confused:

Do you have a schematic of the Phoenix (maybe even a larger one, you guys are hard on my eyes)? At first I thought it was for heater elevation but the original schematic shows the centertap of the heaters grounded.

Here ya go!

Still small, found some better.

http://www.flickr.com/photos/49108115@N04/6687437273/lightbox/

The resistor divider is producing a voltage reference for the grids of the phase inverter. Normally you would like to see a capacitor to produce a low impedance source of voltage. But with the grids of the tubes being a high impedance load the 8.2k resistor looks relatively small. I would still be inclined to put a small cap in but it might be fine without it, I would think even 1uF would be plenty.

Well I needed to order a couple of parts to finish so I went ahead and ordered
the 25/50 cap too. I will clip it in there and test it to see if I hear any improvement. I'm no amp whiz but I'm sure Hammond had a good reason for sticking it in there originally. Platefire