The buzzing feedback may be due to a grounding problem. is there a wire grounding the bridge to the rest of your circuit? it also looks like you have ...

the bridge is not properly grounded

i meant to say parallel

is it possible to do damage to your gear this way? yes. are you doing damage? probably not. you should check the impedance of the cab with the speaker...

thats exactly what it is. i just like the brand

what is the actual binding made of?

not if you want to get it out without doing some damage, just use a little drop of titebond

your idea got me thinking after i posted that last one there. i think if you used an on-off-on you could do it if you were ok with the middle position...

that wire sounds a little big for that application, if you can find some smaller gauge higher quality wire that would be better, you can solder the wi...

interesting idea but the i don't think the on on on switches will work for that. you could use dpdt or spst toggles for one of those things at a time(...

it sounds like it is not grounded properly, if you have a multimeter you can check this pretty easily.