Audioengine S6 210W Compact Powered Subwoofer with Powerful Bass in a Small Package - For Gamers, Music Lovers, Movie Buffs - Grey : Amazon.co.uk: Electronics & Photo
Alpine SWE-1200 8" (20cm) Powered Subwoofer - Ideal For Land Rover Def
Alpine PWD-X5 4.1 Channel Digital Sound Processor (DSP) with Powered Subwoofer
WF-SUB480 180W Active Subwoofer with 150W stereo Amplifier.
Fenton SHFS08W White Powered HiFi Surround Sound Subwoofer - 8"
P2SK Powered Subwoofer | Mcintosh | KJ West One | Hifi Store
Bishop Sound UK Delta 18" Active Powered Subwoofer 1000w RMS