The Octavist15 BN-SB15 is a powerful subwoofer capable of producing 2400+2400w of power. With a dual 2 ohm impedance and a nominal power of 1200+1200watts, the Octavist15 is sure to bring your music to life. It features a triple stacked 3" voice coil and a 200mm motor for an impressive 30-10Khz frequency response. With an impressive 88dB sensitivity, it is the perfect choice for any music enthusiast. The Octavist15 is available in both 12" and 15" sizes.