Phase Technology Power-FL8 8" Subwoofer with Passive Radiator, Black Ash

8-inch Subwoofer w/ Passive Radiator. The Power-FL8 incorporates a proprietary 8-inch high-excursion ultra-long throw mica-graphite polypropylene driver and a downward-firing bass radiator, delivering uncompromised bass output. To minimize distortion, the driver is attached to a .75 to 1 inch MDF baffle and mated to curved black ash cabinets. A 250 Watt servo-controlled amplifier monitors and adjusts output for dynamic and undistorted response. The Power FL series subwoofers also include gain control, a phase switch, line-level inputs, a separate LFE input, and speaker level input.