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Denon 3805 Sub problems



The other day I was watching TV and my sub just started rumbling very loud, now it is constant. I have tried to reset the amp and that has not sovled the problem I have also un pluged the sub and no change, when I tried to reset my speakers the sub does not make any sounds untill it reach surrond no 11 rear right then it make sound. Any one have any idea whats going on or how to reset the system so it will hear the sub when I use the mic?


Distinguished Member
First thing to do is completely disconnect the sub from the amp to see if it's the amp or sub thats causing the problems.

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