Lynx Audio SW-836D 10-Inch Active 500W Subwoofer Custom Ported Transparent Sound Box with Built-In 300W High Frequency Amplifier The SW-836D is designed to be installed in the trunk or rear cargo area of your vehicle. The built in 4 Channel 300 watt high efficiency class D amp gives you great power for all other speakers in the vehicle. RCA and speaker level inputs for use with aftermarket and factory head units. The wired remote will give you full-control of the bass so that you can adjust it to your liking as you listen to difference genres of music. Powerful Active Subwoofer with 41 Channel, 10" Subwoofer Plus High Efficiency Class D Amplifier, Powerful Built-In Ultra-Bass Amplifier and 4 Hi-Fi Amplifiers. Max Output Power: 800 Watts. Complete wiring harness provided