Hi I have a Bose surround sound speaker system: the powered bass module and the 5 cube speakers (Acoustimass 15 series II). I have been very happy with the sound but recently a problem has developed: there seems to be base sound 'leaking' from all 6 speakers and it comes in waves. It is most apparent when a DVD is in pause mode (although it is still easily heard while playing the DVD) - the base comes out as a series of soft thumps and it seems to be getting worse. It sounds like some kind of interference. Has anyone had a similar problem? Any help would be really appreciated. Cheers.