Polk Audio AM6500-A Surround Bar 6500BT Polk's patented SDA surround technology delivers a vivid 5-channel sound field from a single source; no rear speakers or special room characteristics are required Polk Digital Logic technology, a proprietary DSP program, automatically calibrates and optimizes your sound bar for any room shape or system setup Smart Bar programming enables the sound bar to easily learn volume up/down and mute from your existing TV remote control. You'll use only one remote for the sound bar and your TV Bluetooth wireless technology aptX and AAC delivers high quality sound from your smartphone, tablet, computer or other compatible device Compact 80 Watt wireless subwoofer features 7-inch downward firing poly-composite Dynamic Balance woofer and flared J-port for big bass with low distortion