Occasionally (10 to 12 times per day) my Titan starts to rumble. It sounds like there is thunder in the room. It will do it for a few seconds and then stop. It's not particularly loud but very much noticeable. This happens when the system is on or off. I could be playing a movie and it sounds fine but might start to rumble at any time. I could have the system off and all of a sudden...rumble for a few seconds.
I just hooked up another sub just to make sure it wasn't coming from the receiver. Of course the other sub worked fine.
Any suggestions? It must be the amp. Should I contact the amp company?
Thanks