Thank you, everyone for your help with this. Ultimately I decided to run a Audyssey set up with the Marantz SR6015 I'm using and it really fixed the problem. That software was really helpful.
Subwoofer Popping
Can someone help me? 5.1 system. My set-up: Marantz SR6015 receiver. Four Bowers and Wilkins 705 S2's for the R/L and rears and the B&W HTM71 S2 center channel. All speakers set to small. The REL T/9x is my sub. Marantz is set to LFE + Main. Crossover setting on the Marantz is at 80HZ. I have tried for many months to get my settings right on my set-up but it seems no matter what I do my sub often makes a snapping/popping noise when trying to play LFE at a high volume when watching movies with the family. It's as if something is set too high and sending too much power to the sub. What settings do I have wrong? For the life of me I can't figure out how to adjust everything correctly on both the sub (the phase, HI/LOW LEVEL, CROSSOVER, and the .1/LFE LEVER) and the various settings on the receiver (crossover frequency for the REL, subwoofer level adjust,