ADVANCED ACOUSTICS: <BR>The new high-performance Klipsch subwoofers worthy of the Reference Premiere moniker are built with our groundbreaking acoustic technology and are, pound for pound, some of the best subwoofers Klipsch has ever created.<p>BALANCED PERFORMANCE:<BR>Compared to other premium subwoofers on the market, Reference Premiere subwoofers strike an optimal balance between amplifier power, driver capability and cabinet volume for maximum output, detail, and frequency extension.<p>GROUND-UP DRIVER DESIGN:<BR>A redesigned driver aimed at delivering the ultimate low-frequency experience, the Cerametallic™ woofers are incredibly powerful and efficient, outperforming the competition.<p>HIGH-EFFICIENCY CLASS D AMPLIFIER:<BR>The built-in, high-efficiency amplifier features an analog preamp design, which maintains the original signal path for cleaner, true-to-source reproduction. The Class D output stage ensures maximum output, detail and low frequency power.<p>MONSTER BASS ANYPLACE:<BR>Featuring a front-firing driver, you can place your Reference Premiere subwoofer anywhere you want. The proprietary internal geometry with a new Aerofoil front slot port minimizes turbulence for crisp, tight bass.<p>DESIGN UPGRADES:<BR>Scratch resistant ebony vinyl finish looks like real wood and covers the entire cabinet. Rounded corners, shock-absorbing rubber feet, steel grille posts and a durable woven cloth grille ensure a premium aesthetic.<p>