Klipsch SW311 Subwoofer

Very good condition, used in smoke and pet free home, comes with power cord and auto set up mic, will be well packaged in generic box for shipment.
Retails for $1,599, purchased about a year ago from Worldwide Stereo in Montgomeryville, selling "as is", no warranty, works perfectly. Conservatively rated a "7" with only small scratches on top barely visible. Generic details:

"Flagship subwoofer delivers rock-solid performance!
Klipsch's hard-hitting SW-311 combines advanced technology and thoughtful design to perfectly round out a home theater or stereo music system. A high-output 500-watt amplifier produces room-filling bass power like you wouldn't expect from a sub this compact. The strong-yet-light 10" woofer is designed for quick, precise movement, and teams up with a 10" passive radiator to give you an extra mid-bass boost. And since this sub measures just over a cubic foot, it'll deliver the bass you crave without taking away from your room's décor."

Digitally Controlled Subwoofer™ (DCS) user-interface with three EQ modes (flat, depth, and punch) and five user-adjustable presets (music, movie, night, and two assignable settings)
top control with 2-line LCD display panel lets you easily fine-tune settings
500-watt RMS BASH® digital hybrid amplifier
10" front-firing woven fiberglass driver
10" side-firing passive radiator
four-layer aluminum-wound voice coils for high output
frequency response 22-120 Hz (±3dB)
variable 40-150 Hz crossover
adjustable phase
auto on/off
line level/LFE (low frequency effects) input and line level output
IR sensor for operation with select learning remotes or control systems
USB input for future upgrades and access to advanced features
compatible with the Klipsch WA-2 wireless audio adapter kit for an easy connection to a sound system
13"W x 13-7/16"H x 16-1/4"D