for those who believe that armed with a good guitar and a great amp they can conquer the world...

Servicing and repairing the APEX 450 Gold Diaphragm Tube Condenser Microphone

 

Here we will be examining the signal flow in a 1971 Fender Silverface Princeton. Identical to the earlier Blackface Princeton's, it uses the AA964 circuit.

Before we can go any further, I must  post  the standard  disclaimer.
DO NOT TRY THIS AT HOME! THE INTERNAL CHASSIS OF THIS GUITAR AMPLIFIER CONTAINS POTENTIALLY DANGEROUS, LETHAL ACTUALLY, VOLTAGES!
Got it? DANGER Will Robinson DANGER!
If you're not familiar with high voltage electronics, specifically tube electronics, actually electron valve; please take this thing to a qualified technician. Ok, on with the show...

This little amp came to me with a few issues and we have put them all back right. These amps are a bit anemic, rated at 12 watts, and that's about all it will do. Some one had done a Marshall type mod, placing the tone stack after the second gain stage to get a little more crunch. Not a bad mod really, but now we're back to stock specs.

AIN'T SHE SWEET?
Click any image for full screen view


 

Copyright 2008, deering valve amplification & SolarPress
Web Design by: Master of the Cosmos Publishing DBA SolarPress.net
this page updated: 08 Dec 2008 18:24