what would cause this

Darren McGruther · 12-05-2004, 10:24 AM

Every once in a while, more often that I would like, my sub "flutters". I dont know if flutter is the right word or not but it kinda make a continual pa pa pa pa pa sound when there is dialoge in a scene. No one else can here it but my ears are in a lot better tune with my theater than anyone else. Any ideas????
ps sub is a Vivid 10" 100watt and the receiver is probably 3-4 years old at the most(Pioneer)