Tremster
Active member
There is no amp-related subforum, so I hope it's ok to post this here.
I came into possession of a used Peavey Classic 30 (Schematic). It has no speaker, and the filter caps are oozing something, and the reverb tank wires have been cut, but other than that it seems fine. The tubes are a new set of Tung-Sols.
I had a Classic 30 many years ago, I know the sound, but I want to play a bit and do the "Blue Guitar mods" to this one, meaning some different cap and resistor values. I will replace all electrolytic and film caps, I already desoldered the old ones.
Now, the previous owner wanted to install "a better reverb tank", which he included, the original one is lost. But he cut the wires on the plug on the PCB that connects the reverb cables, see photos.
It's this part of the schematic:
but I don't know which of the four wires (two from "input", two from "output" on the tank) goes to which of the four pins J6, J29, J30 and J31 on the PCB. The previous owner wrote "L" and "R" on that plug, but doesn't remember what that meant. I need help here.
Some pictures to show what I mean:
What's this plug called? Can I buy one of those? Can I get the remains of the old wires out somehow and shove the reverb wires in? Or should I just solder the reverb wires to the pins on the PCB itself? Which wire to which pin?
Any help appreciated!
And lastly: C23 is a film cap and is labelled "2.2A35" on the schematic, which would mean 2.2uF/35 Volts. The actual cap is labelled ".22k 250s", which would mean 220nF/250 Volts. What's the deal with that, which value is correct there?
Thank you very much!
I came into possession of a used Peavey Classic 30 (Schematic). It has no speaker, and the filter caps are oozing something, and the reverb tank wires have been cut, but other than that it seems fine. The tubes are a new set of Tung-Sols.
I had a Classic 30 many years ago, I know the sound, but I want to play a bit and do the "Blue Guitar mods" to this one, meaning some different cap and resistor values. I will replace all electrolytic and film caps, I already desoldered the old ones.
Now, the previous owner wanted to install "a better reverb tank", which he included, the original one is lost. But he cut the wires on the plug on the PCB that connects the reverb cables, see photos.
It's this part of the schematic:
but I don't know which of the four wires (two from "input", two from "output" on the tank) goes to which of the four pins J6, J29, J30 and J31 on the PCB. The previous owner wrote "L" and "R" on that plug, but doesn't remember what that meant. I need help here.
Some pictures to show what I mean:
What's this plug called? Can I buy one of those? Can I get the remains of the old wires out somehow and shove the reverb wires in? Or should I just solder the reverb wires to the pins on the PCB itself? Which wire to which pin?
Any help appreciated!
And lastly: C23 is a film cap and is labelled "2.2A35" on the schematic, which would mean 2.2uF/35 Volts. The actual cap is labelled ".22k 250s", which would mean 220nF/250 Volts. What's the deal with that, which value is correct there?
Thank you very much!
