diode resistor master ?

[jamme61]

This master does sound good at low volumes IMHO. A lot better then the rich mod i had on my old plexi. The one on the plexi sounded terrible, harsh unless you turned it up and then it was to loud.

Martin- are you sure the master pot is flying leads? Mine looked like it was mounted to the circuit board like the other pots. I hope your right it woul be easier to replace.

[martin manning]

Yes, mine has flying leads, and the wires appear to match the other wires in the amp exactly. Perhaps there was a shortage of the PCB-mount pots and that was the work-around. I've seen gut shots with PCB-mount pots and also with 2-conductor shielded cable connecting the pots.

[matt h]

(deleted)

[martin manning]

Both the Plexi (1987) and Studio 15 have GNFB.

[matt h]

(deleted)

[skeezbo]

We may never know unless martin or jamme61 is willing to remove the diodes to hear what happens to the sound, and so I respectfully ask that one try it and share the info!
I remember hearing one of these back in the day and thinking that this was the first amp I had played through that still had a great sound even with the master down to a reasonable volume. From what I remember, the possibility that diode clippers come in as the master is turned down could explain what I was hearing. I'd sure like to know more about this master!
Thanks,
Skeez