found at DigiDirect
The Audioengine S8 Powered Subwoofer has an 8” custom woofer and is small enough to place in a corner or hide behind furniture. The S8 delivers great bass performance and its low, tight and smooth bass will blend well with the other speakers in your system.
The S8 Subwoofer has a super-fast woofer designed for audio and home theatre performance. It features an anti-resonant steel frame and heavy-duty rubber speaker surround for accurate low end. The S8's bottom-firing and front-ported design means you'll hear quick, precise bass with no distortion, even at higher volume levels.
Dual audio inputs are included on the rear panel so connecting S8 to all your gear is easy. An auto-sleep standby feature turns the S8 Subwoofer off when you're not playing music.