You weren't a bother, loopy. Q&A is one of the reasons that we all gather here, after all.

Shutting off my amps is not an easy process (the M200's are under the TV, and probably the only way to turn them off short of hiring a leprechaun to crawl into the cabinet would be to unplug the amps at the power conditioner), so it didn't even occur to me to try it. I did mute the SMS-1 some to see how the mains faired without the sub, but that's about it.