Hi. I see this is an old thread but I have a question regarding this issue exactly. I came across this:
http://torresengineering.stores.yahoo.n ... uitar.html
My question is, if you do move the two resistors to right before pin 2 of the preamp tube, as I have done on my stock ‘73 TR (wired together in parallel), does this mean only input jack 1 is usable? My understanding is, that with the switching jack setup described, when jack 2 is used the 1M grid load resistor is out of the circuit and there is no 68k resistor there to act as such. So what I’ve done is simply tape over jack 2 so I don’t accidentally plug in there. Is there a way to keep the 1M resistor in the circuit when using jack 2? Or could I give jack 2 it’s own 1M resistor? I realize the result would just be two identical jacks; I just don’t like having the tape there. I guess I could just disconnect jack 2 entirely, but that seems a little sloppy also.
I do think the amp sounds noticeably better with the resistors moved. At first I just took them out completely. It sounded great with a stock Squier Tele, but with my Troy Post (TPC-1, Super IIs, coil tap on, OBEL bypassed) it was way noisy and a little over the top on the bright side. After putting the resistors before the preamp tube, the noise was back to the normal level and the tone seemed brighter than with the resistors on the jack but well balanced.