The Sound Town STLF-15120A is a 15” universal replacement driver for PA/DJ woofers. It is compatible with Sound Town PA speakers (subwoofers) and c ompatible with other brand speakers with  a15” subwoofer. The subwoofer comes with a 8-ohm impedance and has a frequency range of 40-2K Hz with a sensitivity of 100dB. It has a built-in cast aluminum chassis and has a paper cone with cloth edge. With 500W RMS power handling capability, the STLF-15120A delivers a massive and deep bass, and makes a great replacement woofer for your 15-inch PA/DJ speakers or subwoofer cabinets. FEATURES 15” cast aluminum frame 4” voice coil and 120-oz magnet produce superb sound 500W RMS power handling capability