Or perhaps the speakers themselves are actually breaking in. Like UFOs, cold fusion, the Easter Bunny, or an effective government, some folks believe the phenomenon exists.
I know more people that
do than don't. Ergo, it's true.
<-- Note the wink, people!
Back to reality....
You mentioned that you moved them around, and I bet that had something to do with it. You didn't, per chance, move the M3's closer to a corner? That would boost their bass response a bit.
Quote:
Your Brain is breaking in.