Onkyo HT-S670B Home Teater System (Black) Digitally-tuned AM/FM radio with up to 40 presets Color-Coded Inputs and Outputs for extremely easy connections Crossover adjustment lets you more accurately match the performance characteristics of the subwoofer to your front speakers Optimum Gain Volume Circuitry Includes two 4 dual woofer front speakers, a 4 dual woofer center speaker and two 4 woofer surround speakers. All feature 1 balanced dome tweeters. To complete the home-theater experience, there's an earth-shatteringly powerful 150-watt subwoofer to bring out LFEs (Low Frequency Emissions) like you've never heard before