Kicker COMPVT65 6.5Inch Subwoofer 4 Ohm Shallow-mount (2-7/8 inch), true high-performance woofer 2- or 4-Ohm four-layer voice coil for max power handling Dark gray modified-spoke cone with bracing for clear bass response Ventless solid-pole design for direct mount to enclosure rear wall Max Rec Amplifier Power (WATTS PEAK/RMS)*300/150; Frequency Response (Hz)25-350