ocr: - - - Quickspat - - - - - - QS812 Bass Machine Aausher Bass reflex subwoofer system 35 watt music power Frequency response: 50-500HZ Rugged structural foam enclosure with twin air ducts - High-output built-in amplifier Powertul 4.5" bass driver Bass control Master volume control for external speakers Convenient frontal controls Magnetically shielded Easy to install instructions 35Watts AC adapter included Music Power Dimensions: 9.0" X 5.8" X 6.5" (HxWxD)