Descent developed a knocking sound

MartinLogan Audio Owners Forum

Help Support MartinLogan Audio Owners Forum:

18000rpm

Well-known member
Joined
Dec 6, 2018
Messages
121
Reaction score
34
Location
Singapore
My Descent subwoofer has developed a knocking sound at certain frequencies, mostly around 20-30 Hz. Here's a video:


Adjusting the 25 Hz level doesn't help much.

Anyone know how to fix or is it time for a new sub?
 
Top