More on Amazon.com : http://www.amazon.com/gp/product/B00FPUIYL2?tag=purrfectcatdi-20 <br /> <br />REL - R-528 - 500 Watt Subwoofer - Gloss Piano Black <br /> <br />Type Passive Radiator front-firing active woofer down-firing passive radiator Active Drive Unit <br />Input Connectors Hi Level Neutrik Speakon Lo Level single phono LFE phono Gain Control Range 8 <br />Fully Electronic with SET-SAFE Yes DC Fault Yes
