I have an Acoustic Research HD510 Subwoofer, and it has an auto-on function, but when I turn on my receiver in the "infinite" position, the subwoofer immediately goes into red led protect mode, and won't turn on normally unless switched on and off a few times. It is attached to a subwoofer out on a receiver, and on a Y-splitter RCA in to a stereo input on the subwoofer. Could I be overloading it even with no volume?