The Infinity Kappa K1000W is a 10 inch single voice coil passive subwoofer with selectable 2 or 4 ohm impedance. It uses a coated glass-fiber cone, rubber surround, and steel basket, and has a frequency response of 25-400 Hz, 450W RMS (1800W peak) power handling, and 90 dB sensitivity.

This subwoofer is intended for car audio systems and requires an external amplifier. Use the selectable impedance to match amplifier loads and install the driver in a properly sized sealed or ported enclosure; consult enclosure and amplifier specifications for optimal performance.