Im having the same problem,AGAIN.
Klipsch replaced my sub a few months ago because i was getting weak bass and the amp was getting HOT,this one(replacement) was working great,good bass,the back would only get warm but here we go again.Ill give Klipsch a call on monday and probaly have to send this woofer back which means no speakers for a few weeks-AGAIN. bummer..
Dan z.