Polk audio PSW111 subwoofer has heartbeat sound issue

frankPDX

Hi all,

My Polk audio PSW111 subwoofer has weird heartbeat sound even when it only pluggin power AC. How to fix this issue? Please help

[Deleted User]

Hello,
In all likelihood the bass amplifier will have to be repaired or replaced. Do you live in the U.S.?
Regards, Ken

kharp1

Wow, wish I would have looked here before I purchased a PSW111 from the flea market here. Seems to be a recurring problem with the amps on these subs.

gkmackey

There is a video on YT by a Russian tech. It is not narrated due to language barriers but it is the same heartbeat problem. It is a capacitor issue.