Ampeg Jet 12 R Service & Mod
Ampeg Jet 12 R "Diamond Blue" reissue. Recap, New Tubes, Upgraded 2W sreen, Grid & Plate resistors, & 150 ohm Bias Resistor.
MID POT MOD = Everything Needs MIDS :)
REVERB DWELL POT MOD = Single knob Reverb on most amps has the Dwell resistor maxed out, so now you can dial it back & get way more use out of the Reverb & even a slap back sound.
These are built like a tank & like Blues Jr's run Bias a little too hot & use 1/2 w rated Resistors where higher is needed. It got a custom faceplate yrs ago cuz the original was rusty & pitted.
J Goods was still using the original tubes since the 1900's! Let's get another 30 yrs