Is there any reason this shouldn't work?

[Chistopher]

I posted a similar thread on the bass subforum, but no one goes over there, but I figure this one can go here. I want to make an active/passive switch that disconnects the battery, but "convention" tells me two things. One, for some reason active passive switches use two poles, even though it doesn't seem like it needs that many. Two, you never really see battery disconnects for some reason?

This is what I'm going to try to attempt. My instrument goes: passive pickup -> 500k volume -> bass/treble preamp -> output jack. The left side of the switch would choose to send the signal either to the preamp, or straight to the output jack. The right side would simply disconnect the battery when the preamp is bypassed.



This should work right? Or could there be popping from disconnecting the battery?

 

[beaubrummels]

Yeah, you might need a resistor (can't advise on the value) to avoid the pop. That's a big part of why switches on anything typically just switch the hot and don't cut the power.

I seem to recall Varitones had a resistor to avoid a pop when switching from cap to cap? Maybe look at that circuit?