The SR 500 Active Series oers a built-in amplier of 1200 watts for the SR-515UB, 850 watts for the SR-512UB and 650 watts for the
SR-510. Built with Durable ABS construction for strong overall speaker protection, added USB/SD MP3 Player and Wireless Technology
feature that is directly built-in to the unit for options to track playback and connectivity. The SR 500 Active Series also has a high quality
die-cast frame woofer and external features such as y points to connect your speakers in dierent angles. Metal grill and heavy duty
oversized handles for easy moving.