Sound Town 6.5 ” 80W Steel Frame woofer (Low Frequency Driver), Replacement woofer for PA Speakers (STLF-630) The Sound Town STLF-630 comes is a 6.5 ” universal replacement driver for PA/DJ woofers; it is compatible with the Sound Town PA speakers and speakers of other brand which need a 6.5 ” woofer as well. The driver comes with 8-ohm impedance and has a frequency range of 70-5K Hz. Sensitivity 90dB. It is built in a pressed steel chassis and has a paper cone with cloth edge. With 80W RMS power handling capability, the STLF-630 delivers superb sound and makes a great replacement woofer for your PA/DJ cabinet.