Tube Amp Archive

Ah, one more symptom that could be a clue as to the noise is, I've noticed that the bass channel, were the noises amplifying via the treble pot, if the treble pot is turned down and the volume and base are up to a good level there is a ton of sag to where the signal pretty much disappears when you h...

Got it and many thanks!! I needed a bit of confirmation on a few things and got it, cheers! One last thing, why do you think the distortion, overdrive is so much heavier at a lower volume on the clone? The selmer has a pretty clean headroom up until about 5 and 1/2 or so on the volume. Either way it...

"It sounds like the bass channel is amplifying the 60hz hum which could be a number of things. Is the filtering identical between the amps? Can you post a picture of the amp's internals? Often hum may relate to lead dress issues." I will post a picture later on when I can. The filtering itself is id...

Oh you mean the pi itself biased that doesn't have anything to do with the power to buy a section? Sorry guys, I'm learning or at least trying to. I will look at that basemann wiring scheme and figure out a better layout. Cuz I'm definitely getting a lot of 60 hertz hum.

Okay here's where my real novice abilities come in. The clone has a double adjustable bias pots for the power tubes.. so I guess I built into the circuit more than it needs. So I need to adjust the circuit and take out the fixed bias circuit?

I appreciate you taking the time to check this out. So yeah the voltage seems to be coming from pin 2 of v4 There is no cap from pin 2 to what would be vr6, the trouble treble pot. Just a 500K resistor. On my clone version the trouble pot is amplifying any kind of noise and 60 cycle hum in the circu...

Hey guys, I own a croc skin version of a selmer treble and bass 50 and recently I used a sound City 50 plus chassis and transformers to kinda clone it. Of course, the differences are no tube rectifier and no physical choke, but the normal channel sounds really good, albeit, distortion on the clone a...