Not just audio - surround sound from the Boston Acoustic's Classic series. Combining four CS23 bookshelf speakers, one CS223C center speaker, and one CSSUB10 subwoofer, the 5.1-channel CS2310 system delivers dynamic home theater listening. While all tweeters use Kortec technology for crisp high-frequency audio, the woofers use Deep Channel Design technology for full, controlled mid-range and bass audio. Further, bass-reflex cabinet designs enhance mid- and low-frequency performance. Finally, while magnetic shielding protects other A/V devices from electromagnetic interference, gold-plated binding posts offer superb conductivity.