Hello everyone,\n\nI need a subwoofer for my home theater room. I currently have a 7.1 setup, and my old 100W subwoofer blew (out of warranty). I kinda feel it wasn't powerful enough for my size room anyway.\n\nTherefore, I need a new subwoofer, and do not mind spending some money on something which will make my theater rock. I use it primarily for movies and sports. I have a 125" projection screen, and I included my receiver and speakers below. My room dimensions are 20' x 17' x 9'. Also, my room floor is hardwood, and I do have a rug.\n\nReceiver: SC-1522-K 9.2-Channel Network Ready AV Receiver\n\nFront Speakers: Polk Audio Monitor 75T\n\nCenter Speaker: Polk Audio CS2 Series II Center Channel Speaker \n\nRear and side Surrounds: Two (2) RM7 Satellite Speakers Two (2) RM8 Wide-Dispersion Array Satellite Speakers\n\nI was looking at the Klipsch R-115SW 800W Powered 15" Subwoofer, which has some great reviews, but I'm not sure if it's "too much" power than I need for my room size, OR, if two smaller subwoofers (such as the Klipsch R-10SW Powerful 10" 300 watts Subwoofer) would be better.\n\nPlease let me know your thoughts! Thanks!!!