The ProSub 800 is how you can get deep end bass from a small footprint. It measures 10.5″ wide, 13″ tall and 16.5″ deep. But packed within is a 300W amplifier and two 8″ woofers (the downward facing woofer is a passive radiator). Frequency response is 20Hz to 150Hz which is wide enough to be paired easily with any speakers. Volume control is smartly placed on the side of the subwoofer (unlike most others where it is located on the back) which allows easy attenuation whenever you need it.
Cosmetically, the sub looks really good. A bit of sticker residue on the top panel and just minor minor scuff marks elsewhere. Grille cover is good. The sub will be securely packed for safe shipping.