speaker cable question - OT - Standby

I have heard conflicting theories on this, so just to be safe, I always power the head down completely before removing a speaker cable. I love my amp, so I'm not taking any chances!

 

okay when the amp is on standby, not okay when the amp is off standby and in play mode.

 

dont do it... power off totally. atb

 

Of the amps I've owned and/or built, the only thing that's powered when you flip the power switch is the filaments, which means it's perfectly safe to unplug the speaker cable. Can't think of any special cases.

 

to be on the safe side, take out all the fuses and unplug from the wall.

 

I usually wait until there's a blackout in my neighborhood before I switch speaker cables.

 

hahahah!

 

Yes...with a tube amp on standby, it is safe to change speakers. The main concern here is potential flyback voltage generated in the output transformer with no or too high of a load on the amp. However, for said flyback voltage to be generated in the output transformer, the amp has to: 1)not be on standby, and, 2)also have an input signal applied (or some sort of internal oscillation malfunction).

 

I switch cabs all the time in standby.

 

What he said. ALL the time. Never a problem.