Any updates on this topic? My Icon SB-1 subwoofer just rumbles. I got it in January 2015 and it's now broken in just 10 months, broke in November 2015. I've tried to pair bluetooth again, disconnecting power, reboot, restart, off and on, the red light eventually always goes blue and that's when the rumbling starts. When it's red and not paired, no sound, once it pairs (blue) the rumbling sound starts. The volume knob on the back can indeed control the volume of the rumble, so I just turn it down all the way now or leave it off. But I miss that woofer. What to do?
