Tube Amp Archive

Pacific Music Supply Company - Model M-100-3 :!: After swapping the caps and the AC line cord, I hooked up the vol-pot like the Champ 5C1 and skipped the tone pot for the time being. Plugged in the Rick-NS lap steel that came with the amp, and all I can say is WOW ! ! ! -- Dimed, I swear it's shoul...

Ordered parts from Weber and swapped out all the known caps. One of the replacement pots wasn't what I ordered, and its replacement arrived late today. I guess I'll just play around with/without the tone stack using alligator clips to swap parts until I hear what I (more or less) like. Also thinking...

That is a super nice cabinet for that vintage! I have a Magna Electronics '47 195J SE 6L6 with a really ratty cabinet that needs restoration. It's waiting until I retire. And a '47 Gibson BR-9, ditto, which is cosmetically really nice. Tom is right, that has to be a 250 ohm cathode resistor. 5W min...

Thanks again, Tom, for your keen eye on the resistor. I managed to get the meter-probes into that rat's nest of wiring, and it read 195 ohms , which is 22 pct short of the 250 ohm you mentioned. :D One lead is soldered to pin 8, the other through a ground lug into pin 1 on the socket for the 6L6, wh...

If your amp originally had a field coil speaker then you need to adjust values in the circuit, usually the power supply to compensate for the lack of that coil. Frequently it is used in lieu of a choke coil. I'm pretty sure the alnico is the orig speaker- the date code is consistent with the other ...

Pacific Music Supply Company - Model M-100-3 I'm hoping to reconstruct this ( 6SJ7 - 6L6 - 5Y3GT orig RCA) bottom-mount amplifier. The alligator tolex, flat leather handle, and white chicken head knobs give this slanted TV-front cabinet a very nice early Magnatone vibe. My images include a self-dra...