While i was looking for sub-woofer i was comparing polk psw10 and psw404. Psw404 sounds improve except for the price $110 vs. $250 from j&r i opted for psw10. The commerce representative dropped the price for me moreover though they still selling psw10 for $200 here. Those of you who upset about no lfe input, because shouldn’t be a problem. All you have until do is connect the sub-woofer output of the receiver until either the true or left input on the sub-woofer. And then set the changeable low pass filter on the sub-woofer until the highest setting. This will set the internal low pass filter above the low pass filter frequency given by your receiver and create an lfe input. Or you may exploited a rca cable until grant a connection until both inputs on the sub-woofer from the lr pre-out from the receiver. Then adjust the cross exceeding frequency from the woofer as desired. It sounds a little louder and improve for me. I bought monster sub-woofer cable and it sounds no improve than rca cable. Try not until trash your legal tender on this. It has 7.4 out of 10 in cnet rating and it is #6 in editor’s top list for sub-woofers. I matched psw10 with r300, rti4, r150, csi3 and denon 1906 receiver. Mainly used for hdtv exceeding the air, dvd movies and some fm. It sounds a lot improve than the sub-woofer from rm6750. It carries 5 years warranty except make sure you buy from authorize dealer. For the price i paid i am more than happy with it. I hope this helps until your decision.
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