KU44 I

Passive subwoofer
Transducers:  2 x 4" neodymium magnet woofers 2 x 4" passive radiators
Frequency Response:  45 Hz - 150 / 500 Hz (-6 dB
Rated Power:  120 W
Height - 116 mm(4.6") Width - 500mm (19.7") Depth - 100mm  (4")