The Sound Town STLF-15AS is a 15" universal replacement woofer for PA/DJ speakers; it is compatible with the Sound Town PA subwoofers and subwoofers of other brands which need a 15" low-frequency driver. The woofer comes with 8-ohm impedance and has a frequency range of 32 Hz - 2 kHz. It is built in a cast aluminum chassis and has a paper cone with cloth edge. With 600W RMS, 1200W peak power handling capability, the STLF-15AS delivers massive and deep bass and makes a great replacement woofer for your 15-inch PA subwoofers.