B&W ISW4/SA250M2 in-wall subwoofer with sub amp

High-performance hideaway bass from Bowers & Wilkins In my book, high-quality bass is an important component of any great-sounding stereo or home theater system. But not all rooms call for a big, boxy subwoofer taking up a large chunk of valuable floor space. Cue the Bowers & Wilkins ISW4 - a passive in-wall sub that delivers high-quality bass while hiding completely out of sight. This package includes the ISW4 in-wall subwoofer, a matching external power amp, and an in-wall back-box - all the pieces you need for unobtrusive bass. The ISW4 lets you enjoy high-quality bass without sacrificing floor space (shown as part of a Bowers & Wilkins in-wall home theater system). Twin built-in woofers offer tight, responsive bass The old adage of "two is better than one" can be applied to subwoofers. I personally prefer the performance of two smaller drivers that combine to move more air than a single larger woofer on its own. The resulting bass is tight and responsive - terrific for music and movies alike. The ISW4 employs two 8" hybrid paper/aramid fiber cones to deliver deep, accurate bass all the way down to 21 Hz. It's an excellent choice for your in-wall home theater or stereo music system in a medium- or large-sized room. Contain and improve performance This package comes with a back-box that mounts inside your wall prior to the sub's installation. It creates a sealed acoustic chamber, which focuses and directs bass output into your listening area while reducing the amount of sound that bleeds into the adjacent room. Matching amplification included The ISW4 gets its power from the bundled Bowers & Wilkins SA250 Mk2 - an external, rack-mountable amplifier designed specifically for the company's in-wall subs. The amp connects to your home theater receiver or preamp/processor via a subwoofer cable , and to the ISW4 subwoofer via in-wall speaker wire . A rich history of audio excellence Founded in England in the 1960s, Bowers & Wilkins is known worldwide for their innov