Monitor Audio FB212 Subwoofer is perfect condition with very low hours. This is one of the best audiophile subs made and is excellent for music and hits hard enough for movies too. I used it sparingly in a multi-channel setup in a 2nd system, with less than 100 hours so it is new condition. This is a very high quality piece. The FB 212 has a footprint of 17 inches by 15-3/4 inches, stands 22-1/2 inches tall, weighs a mighty 110 pounds and retailed for $1,850. I have the original box and packing and will ship for a fixed amount of $75, local pickup encouraged! Features: The FB 212 utilizes a compound isobaric, push-pull configuration. This system has been known to produce extremely high-energy bass. This technology is often overlooked, due to its need for high power and large, heavy enclosures, yet few dispute that, if properly implemented, can provide a serious wallop. The FB 212 uses two 12-inch, long-throw metal cone drivers with cast baskets. To drive these speakers, Monitor Audio uses 360-watts of class A-B power derived from a multi-bank of MOFET devices. The FB 212 provides common features, including both line inputs and outputs, a filter/direct bypass that can be used when connected to a Dolby Digital or DTS processor, a variable low-pass filter, a continuously variable phase control (an outstanding feature for better integration), a Q control allowing you to better match the speed (or lack thereof) in your main drivers and variable volume adjustment. For airflow control, the FB 212 incorporates a high-velocity porting system that better controls airflow and reduces destructive turbulence.