t will leave the rational part of your brain fighting for its life.The Sunfire Atmos Subwoofer is designed to give you the best possible low-frequency sound quality for your Home Theater experience. It incorporates a tremendously powerful 1400 Watt built-in amplifier and a pair of drivers to produce tight, floor-rumbling, denture-rattling bass that you can feel as well as hear. The Atmos subwoofer has an automatic equalization system which will tailor the subwoofer output to compensate for any room effects. Great bass performance through thick and thin. The role of any Surround is to keep the woofer on the straight and narrow as it moves back and forth. The straighter the woofer -- the better the fidelity. To best accommodate the longer ‘throw’ of the Atmos woofer, Sunfire engineers designed a unique Asymmetrical Cardiod Surround. The ACS got its name because of the varying thickness of the wall of the surround from one side to the other. So what does this all mean to you? It means the ACS allows up to 1.8 inches of ‘throw’ with tight, well defined bass that combines extreme output with very low distortion and a quality of sound that is unique to Atmos. Another state-of-the-art advancement artfully executed and timelessly designed. Woofer 6.5" Configuration Dual Active Custom, High Excursion Woofer   High Back-emf Design   StillBassTM Anti-Shake - Amplifier    Power Output 1400 Watts Tracking DownconverterTM Power Supply   Soft Clipping Circuitry   Features    Auto Turn-On   Auto Room EQ - Microphone - Level Control   Crossover Adjustment 30-100Hz inf. var. Crossover Bypass   Phase Adjustment 0-180° inf. var. Connections    Gold Plated Connections   XLR Input - RCA Inputs/Outputs 2/2 Speaker Level Inputs   Detachable Power Cord   International Voltage Selection   12V Trigger Input - Removable IEC Cord   Miscellaneous    Finish Black Gloss Surround Name Asymmetrical Cardiod Surround™ (ACS) Trim Ring   Grille -