PULSEC8A-V4 : Slimline Underseat Subwoofer Enclosures. Ultra compact and slimline. Cast aluminum housings. 6×8 inch subwoofer. Unique 6″ x 8″ subwoofer enclosure allows fitment in the most challenging of spaces, even under a seat. Cast aluminium chassis provides maximum durability and keeps enclosure weight to a minimum. High level input with Auto sense circuit allows the amplifier to turn on and off when using high level input without the need for a remote turn on wire. Wired remote gives full control of the subwoofer volume from the front of the vehicle. Height : 2.8? (72mm). Width : 11.4? (290mm). Depth : 8.3? (210mm).