[PMAT]

How do I fix this? When I turn off my bathroom fan, a huge-ass pop goes through my home theater system. I replaced the switch but it still sounds like a .22 rifle shot. I have a large Monster Cable ac surge protector but it doesn't stop it. I called them and they say the unit is not designed to stop spikes.

[HAL]

Sounds like the audio system is on the same circuit as the fan.  Do you have another AC circuit in the room that could be used to power the system?

[PMAT]

No, unfortunately I don't.

[HAL]

You might try and demo a Price-Wheeler Brick Wall surge supressor.  The PW2RAUD is a high current version that should run an entire audio system, without mechancial hum from the inductor.  The other unit would be a ZeroSurge equivalent.

www.pricewheeler.com
www.zerosurge.com