Need cure for Sunfire True Subwoofer hum

My True subwoofer performs admirably but from time to time it emits a very pronounced hum. Any Cures?

rsi122512-09-2003 1:56am

elevick Details Discussions Posts This discussion Message User 2,638 posts 12-09-2003 at 06:01pm Copy Comment URL Report Comment Edit Delete I sent mine back to sunfire for the upgrade. It was free + shipping back then. The hum is inherent in the original.