Subwoofer rumble noise

bubba jones Unregistered guest	Posted on Thursday, November 24, 2005 - 00:09 GMT i have 2 12" subs running through a mono amp, and there is a rumbling noise comming from them even when the volume is all the way down. is this a bad ground connection? the rumble is more prevelant when changing songs.
* Rovin * Gold Member Username: Rovin Trinidad & T... Post Number: 2907 Registered: Jul-05	Posted on Thursday, November 24, 2005 - 00:43 GMT possibly voice coil damage due to 'bottoming out',maybe .....
bubba jones Unregistered guest	Posted on Friday, November 25, 2005 - 00:45 GMT they are new subs and a fairly new amp