I have a Yamaha HTR 5660 receiver with RM6700 and a PSW 303. I bought the system in January and haven't had the problem until recently. if you are familiar with the Yamaha receiver, I had the volume at -30, about 1/4 of the actual capability. Keep in mind, this is pretty loud, but not loud enough to blow the subwoofer. I had an audio cable directly from the receiver to the subwoofer LFE unfiltered and I just switched it to the recommended solution with RM speakers of running the front speakers thru the subwoofer and setting the front LR to large. Still popping. Am I asking too much of this subwoofer or is there something I can do? I read a bunch of messages hear about popping but that seems to be the PSW 202 instead of the 303. Any help would be mucho appreciado.