While casually looking around at Best Buy, I saw a KLH ASW10120 sitting in the corner. Sure enough, it was on sale for $59.60. So I bought it with no hesitation because I sure needed something better then my JVC 8inch 60 watt subwoofer that didn't produce any bass. I came home and connected it using my old rca cable to the Subwoofers Red/Mono female plug. I already noticed a difference when I started up my X-Box to test it out. I really like the power because now I can actually feel the bass, however, there are some options that I am not sure of. Can someone please explain to me the following:These are from behind the subwoofer. The Crossover Frequency which ranges from 50hZ-160hZ. Also, there are some options on my JVC RX 6008V DTS/DD Reciever that I am not sure of: LFE ATT - 0dB or 10dB Crossover Frequency- 80hZ,100hZ,120hZ. My satelite speakers are small 6inch JVC Speakers. Any help will be appreciated. Thank You, Garen S.