Fried Power Tranny

[Structo]

Can you give us a voltage check on the B+ and the plates of the preamp and phase inverter?

[Jack Hester]

Ok, new power transformer and new diodes and she is singing. It, however, is only clean at 1 anything more is very distorted. Any ideas?

Sounds like a peppy little amp. You can try this little gain mod (actally, an attenuator) and see if it does the trick:

http://www.turretboards.com/vjr/valvejr ... old_v2.pdf

I tried it on a small EL84 SE, as it had considerable gain. Tamed it right down to clean, up to about 3/4 volume. The attenuator is the pot with the 22K resistor to ground. Connect it right to your volume pot, like the drawing shows.

Jack

[DFMoore]

After setting he project down for a while, because of work getting in the way, I tried the attenuator, It helped a little. I'm still not 100% happy with it. My multi-meter crapped out on me, as soon as get a new one I'll compare the voltages with the Eagle I built last year and copied for this project. I did however moved on to the cab, my first attempt at dovetails.

[Structo]

Well it sounds like you are most of the way there.

Just to add my 2 cents, I don't like to see ground terminals on the circuit board mounting screws.

Much safer to have the on there own screw and lock nut down on the chassis floor.

[DFMoore]

Ok, After going back over it I found a wrong Ohm resister. Still tweaking the tone control.