Pinnacle Speakers SUBcompact 6 6.5' 200 Watt Powered Subwoofer (Black) (Discontinued by Manufacturer) Designed and Manufactured in the USA THE worlds smallest powered subwoofer! This sub will disappear virtually anywhere in the room yet produce deep powerful bass. Ideal for average rooms of up to 250 Square feet with 8-9 foot ceilings 7 7/8"W x 8" H x 9 3/8" D