Tube Amp Archive

I made a mistake about the wattage. I'm diagramming this thing right now. I really want to try and figure out what that trimmer pot is doing. I'll post the schematic as soon as I have it done.

n

I took it apart and had a look and took some pictures. The amp is a Toshiba TA7313AP. One of the pictures I posted is the data sheet for the amp. And also, there is a very interesting little pot on the board that has VR written under it. Do you see it? I wonder if this adjusts the voltage to the cir...

Thanks for your reply. Do you think a 100 ohm pot like this would be ok? It looks like it's rated at 1/2 W. Plus this costs 1 euro for five and says free delivery. Not exactly sure how they're making money off of that... https://www.amazon.fr/TOOGOO-Potentiometres-reglage-carres-3362P-1-101/dp/B00ZB...

The main reason I joined Amp Garage is because I bought a Trainwreck Express kit which should be here in a couple of days. I apologize if asking about a transistor amp is considered bad form here in the forum.

n

Hi Guys I have a question about my fernandez ZO-3 travel guitar. It has a little 3W transistor amp built in. When the battery starts to go dead it develops a wonderful crunch that sounds even better than my 5W laney lionheart. So I have two questions. 1) Is this along the same principle as what Eddy...