The subwoofer in one of my speakers buzzes when the bass setting is very low, worse when level is increased. The speaker buzzes when connected as left or right speaker; I think that means it is the speaker and not RF noise being generated on one side or a bad connection. This seems to have just started with the addition of a new amp. The old one may have grown so weak I did not notice the change. Any suggestions as to what the problem is would be very helpful.
Thanks,
Charlie