I have the exact same amp. It’s a beast but does have the loud pop when switching off. I’ve been in and out of the amp for various repairs and upgrades but never addressed the pop. While waiting for TS I played with it this AM:
The only way to suppress the pop completely is to break the signal path at the stereo effects return jack i..e plug in a dummy plug and isolate the power amps from the preamp/tone/effects path.
A dummy plug in the mono effects return jack (isolating the power amps from all but the chorus section) still pops but a bit less.
Volume controls, no instrument connected (which shorts the inputs) etc. have no effect.
Disconnecting at the power cord instead of the power switch has no effect (thinking a ratty power switch)
I usually have something plugged into the effects loop so it hasn’t been a bother to me but it would be interesting to persue with @robismod and you guys to see what’s going on.
Many others have said it’s not a big deal and doesn’t hurt anything…but it makes my nerves stand on end…LOLWhat JohnInTx said above…I’ve read that others have done that, some say turning volume down helps, and someone had suggested building in a relay circuit of some sort to “turn off the signal to speakers for a short period”. In that vein, could a simple on-off switch be wired in to the speaker leads—turn it on to block signal, then power down? (Of course remember to turn off when ready to power up again)
Yes. And actually my quick test just opens the signal path and connects the power amp inputs to air.Ok so are you saying if you short out the input to the output amplifier the "POP " will be removed or suppressed..?
by Jake Hertz
by Aaron Carman
by Jake Hertz