The FTX1530 is a 15″ diameter cast frame common motor coaxial speaker, with a single ferrite magnet that acts as a motor for both LF and HF drivers saving space and weight. With a 3″ voice coil, the speaker provides a 800 W continuous / 400 W (AES standard) power rating with a 97 dB LF sensitivity (106.5 dB HF sensitivity). It incorporates a 3″ voice coil compression driver to deliver a 40 Hz to 20 kHz frequency response. An external crossover is required, directing the low and high frequency parts of the input signal to the woofer and HF driver respectively.