-- 18 in Differential Drive woofer for extended low-frequency output. -- Large port area for reduced distortion. -- 20 mm threaded pole socket for solid, secure satellite speaker mounting. -- 18mm multi-layer compact birch plywood enclosure
1. 18” high-efficiency 4” voice-coil woofer with Inside/Outside Coil Technology 2. 137 dB maximum sound pressure level 3. Response down to 30 Hz 4. Rectangular box enclosure with protective metal grille
1. Single 18 inch passive subwoofer, 2. Full sound, powerful bass, low distortion 3. Low, clean and loud as well, easy to install safely. 4. Best choice for Disco, Band, concert halls, theaters.