Tube Amp Archive

Cool. Thanks. Looks like the last one is a no go, as mine has a distortion control and the circuit is different, but that Rf elimination mod is intriguing.

selloutrr, If there was a smiley that was bowing down in thanks I'd use it here. There isn't so this will have to do :D I plan on cutting and pasting these ideas to a word document and giving it to my tech so we can go over these things. I'm hoping on trying least invasive methods first and then mov...

Gaz,
Thanks for the input. I will pass along the heater idea to the tech.

So, I bought a mid-late seventies Ampeg V4 amp this summer. I am trying to get some ideas to take back to the tech in terms of troubleshooting the hum issue. The basic issue is that there is a hum at start up that is minimally improved with the hum balance. Moving the controls on the tone stack show...

That second guy, I'm not sure who he is, but he looks friggin' stressed out.

Damn, I waited a week and a half to get those 1k ohm resistors. Well patience is a virtue and I'll get a few of these 100k ohms for the future should I delve into this.

Lol, nice avatar btw.

Thanks for the replies. Selloutrr I sent you a PM. After looking at other amp rigs on videos, my V4 definitely seems a little tighter and more cramped then some others. When G. Weber said, "Let's do the caps now" and then flipped an amp over and there they were all tucked nice and neat in a protecte...

Aloha. I am slowly dipping my toes into the pool that is amp repair and building. I have a V4 Ampeg and I live in a rural area. My first experience with the only tech in the area was not so good. So I have slowly started gaining knowledge about my amp and tube amps in general. I read Tom Mitchell's ...