The flat active subwoofer comes in a rectangular box. It features remarkable high volumes. Upgrade any car audio system with this high-performance subwoofer. 

• 8" subwoofer.
• P.W.M MOSFET power supply.
• RCA input/high-level input.
• Phase switch: 0 or 180 degrees.
• Bass boost: 0-12dB @ 45Hz.
• LPF filter: 50-150Hz.
• With remote control.
• Impedance: 4ohm.