Knows in advance how the woofer’s acoustic system will respond to the output signal from the amplifier, and stops signals that could cause distortion or damage before they even get to the driver, for the biggest possible bass response with the least distortion or risk of damage.

Gives you four preset “room optimizers” to choose from, allowing you to program in the optimal bass and blending setting for your specific room.

Designed and engineered for perfect volume, minutely tuned for distortion-free low frequencies, and internally braced and damped to eliminate internal standing waves and other performance-robbing resonances.

Finish matches today’s high tech TVs, furniture and speakers.

Clears the path for instantaneous dynamic response by optimizing the woofer’s motor structure, voice coil alignment and suspension for smooth, unimpeded movement over a broad spectrum of the lower frequencies, even at extreme listening levels.

Allows our engineers to design out distortion-causing driver and system resonances, so you only hear the good sounds.

More rigid under fire than any stamped steel, Polk’s cast aluminum baskets will never flex, even at extreme listening levels. Specially designed side vents encourage air circulation, keeping the voice coil cooler and more efficient.

Provides extreme stiffness, while the lightweight cone material ensures fast response and effortless movement. Extra rigidity is achieved by attaching the drive mechanism via the ABS cone coupler.

Allow incredible “travel,” and won’t break down even after relentless pounding.