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View Full Version : Removing the Tremolo circuit

TweeDLX
03-07-2009, 03:04 PM
I have a SF Princeton (non-'verb model) that I would like to remove the trem circuit from so I can add a gain stage. I know I have to account for the loss of the trem circuit, but exactly how? Thanks for your help with this!

Mike
mark norwine
03-07-2009, 03:40 PM
what "loss of the trem circuit" are you talking about?
slider313
03-07-2009, 03:54 PM
The Princeton has bias varied trem,unlike larger black and silverface amps and it can't be removed from the circuit using a 50K switch pot like larger Fenders.
TweeDLX
03-07-2009, 05:51 PM
The Princeton has bias varied trem,unlike larger black and silverface amps and it can't be removed from the circuit using a 50K switch pot like larger Fenders.
I removed the entire circuit (components), added a bias pot and used the second half of the PI tube as another gain stage (ala PR). I also added a larger (25 watt) OT. I solved the "loss" problem myself by adding a 220K resistor to ground before the last gain stage. Sounds great! Loud and full...so...never mind!:D

Mike