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Ampeg b100r speaker "pop"

Mcrelly said:
is it kind of a "flump!" sound? I heard a b100 at the store doo that! makes me nervous.

If I was to put a spelling to the sound, that would probably be it :) From what I hear though it's pretty common so I wouldn't be nervous. I believe my SWR WM 2004 (that I used to have) used to pop when I turned it on even if the volume was down as well.
 
My Kasino Lounge-B 'pops' when I turn it off. Come to think of it, every solid-state amp I've ever used (including various pro and home audio stuff) had some sort of 'powering down pop' that was audible through the speakers.

I don't see how it could damage the speaker. It's not a 'clipped' signal (or even particularly loud). Harmless? Probably.

Even my all-tube head (a Markley SS-120) makes a bit of a noise when I switch it into standby mode. I've never turned it right off so I wouldn't know what it does in that case.
 
I realize that this is a zombie thread, but I thought I'd add this info for future searchers.

My B100R (US-built) has always popped. From what I've been told by Ampeg, "They all do that." I know that the sound wasn't going to hurt the amp, but it bugged me nonetheless.

My solution was to have Invalid Link Removedinstall a timed relay in the amplifier. It opens the speaker circuit as soon as the power is cut, before the pop hits. It works beautifully.
 
This is such a simple thing to add to a SS amplifier. They ALL have instability while the power rails charge on power up and drain at power down. Adding such a circuit to prevent these surges from reaching the speakers is a no brainer. All SS amps should be so equipped. All decent amplifiers are!!!