I have the yamaha 5.1 AX v-995 receiver that I've connected up with a Bose accoustimass 5 series ii, including the base module. It works fine, and gives good omnidirectional bass at low volumes. However, the sound cuts out entirely when the volume is played a little louder - not even close to annoying the neighbours loud, just for instance, watching a movie. When it happens I hear the speakers click off on the receiver; i can turn them back on and if i turn the volume down a bit, everything is fine and doesn't cut out any further. It seems to happen when there is more bass being played. Is this an incompatibility between speaker/receiver, or something simple like speaker wire?