Tube Amp Archive

cool, thanks for you reply guys. And yes Tom, I have read that celestions can take quite a bit to break in: I was thinking of going for 80 hours of 60hz sine wave, at 1/3 or the speaker capacity (7.3 volts for a 20 watts, 16 ohm speaker). Does that seem reasonable to you? What do you think about pin...

hi folks I have some new celestions g12m heritage and they need breaking in. I read posts explaining how to do so with a variac. How about using a 60hz sine wave played though a power amp, measure the output voltage on the speaker terminals with a multimeter, and dose the volume until the voltage is...

hey guys, thanks so much. Yes, I am changing them as other people were suggesting that in other forums. They were saying the caps used by vox are very poor quality, and that replacing them made a huge difference in their amp.

So why not try and see if they are right? Same values, just better quality.

hello guys, I am looking to replace coupling caps for my AC15h1tv. I have a friend who can do the soldering for me, but I am supposed to find out which ones to change, and I don't understand much about this. The schematics for my amp are at www.*blue*guitar.org/new/schem/vox/ac15htvh1_handwired.pdf ...