Thanks for the reply.
The sub isn't clipping. It's turning off (as evidenced by the lEDs in back), evidently because it isn't receiving enough input to stay on. Setting the sub channel to +10db helps keep the sub running; preventing the sub from turning off is the only reason I did that. I've left the sub's crossover set to its highest frequency, but the problem seems to occurs no matter what it is set to. The problem occurs with the crossover point in the receiver set to either 120Hz (my original setting) or 150Hz (which is what I have set it to now in hopes of supplying the maximum signal level to the sub to prevent it from turning off).
Am I missing something obvious?
