Yes, on my B&W N801/HTM-1/N805/ASW850 HT system. Surprisingly some of the speaker mounting bolts were very loos. I did notice a slight improvement in the sub-woofer bass, not sure about the other speakers though.
Anyone tighten up drivers occasionally
Out of curiosity I checked the tightness of the mounting bolts on my Revel speakers today. Probably the 2nd time I have done that in a decade. I could turn each bolt maybe 1/16 of a turn (curiously, one woofer bolt took a 1/4 turn). Anyone check their drivers on occasion? systems been off since, and wonder if I will hear anything different-