My Larger with megawoofers, made 10/2002, is now making the flapping sound described in this thread and also these threads:
20042006Nobody ever followed up to say if they fixed it or still have the problem.
I've removed and vitrified the PR, checked for loose parts, cushioned the wires with fiberglass, and carefully sealed the PR. Still flaps on any type of LFE pulse (gunshot, explosion, etc.), and not at extreme levels either (-15dB below reference). I haven't tried re-sealing the drivers yet.
It didn't flap when new, but now does after sitting unused for 2 years. So is it an air leak, worn out PR or driver, etc.?
-