Tube Amp Archive

i am using a chassis-mount transformer from radioshack 12VAC.450mA inside my amp that is running hot. It works and the voltages are fine, the regulator doesn't seem to be hot but there is a humming. there is no smoke but i noticed there is a little bit of 'that' smell when I took the chassis out. th...

Never work on it when tired, drunk, stoned or frustrated, they don't mix with high voltage very well. Enough said? Be careful and good luck. Regards, Don Ps: And agreed, a simpler circuit with less gain is highly recommended before jumping into something that's on the verge of out of control like a...

Yes, I realize I will need to use one of the tube sockets and remove that part of the circuit. Probably the tremolo.

Has anyone ever done this?

diagrammatiks wrote:you could do that.

you realize that you'll have to actually add a tube socket to the amp right.

From more digging I found this. can I just replace my regular fender LTP PI with this? I assume I will have to change the drop string to compensate for voltage? any help is appreciated!


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I played a super twin the other day and want to modify my fender to have 12bh7 post phase inverter tube to get that big clean sound. I can't seem to find a layout or schematic for this type of mod. can anyone point me in the right direction?

so i can use this ot in any 50 watt config and it will be safe?

I found one of these in my cabinet and really want to put it to good use. its a heyboer and the ct is 3.4k, is it safe to use in place of something like a jcm800 ot?

Nick, thanks for your post. I appreciate you taking the time to reply in such detail. Sounds like you've had a long and interesting musical life. I'd love to hear some of your work. Any of it online? Please take a moment to listen to my stuff. You can search it on iTunes under "Enjoying A Life" and...

Like I said, I tried that already. When I reversed the leads the first time it just squealed really loud.

i am building a dlite amp and fired it up with signal but some noise. so i tried to clean up my ground and switch the OT taps to the power tubes, GOT A LOT OF NOISE, high pitch squeals. so when i switched them back the noise was quieter but now i am getting this motor boat sound whenever the master ...