[dlynch34]

so I noticed on a movie tonight my right speaker woofer when pushing out Low frequency effects seem to be vibrating terribly out of the blue.  Any suggestions what I should look for?  It seems to be only the right speaker?

[ebag4]

I would verify none of the Servo connections have come loose.

Good luck!

Best,
Ed

[Captainhemo]

yup as  Ed  said  and,   see if it is only  that  one  recording  doing  it.
Probably  want to enable the   rumble filters  while watching  movies

jay

[glynnw]

Switch speaker wiring and see if problem occurs on left speaker - that should give you a start at diagnosing problem.

[nickd]

Only issue I ever had with servo woofers was a loose wire that got hooked during transport. “Clacking” noise from one channel during dynamic peaks really alarmed me. Reconnected and no damage. Amps and drivers are really durable.

[Danny Richie]

It sounds like you lost a connection on a sensing coil.