MB Quart MS1-204 8 Inch M-Line Shallow Mount Dual Voice Coil Subwoofer With Woven Glass Fiber Cone Designed to fit in less than 2.7 inches of depth. Ideal for sealed enclosures. Power Handling: Peak - 400 Watts, RMS 200 Watts Oversized High Temperature Voice Coil for high thermal stability in small enclosure volumes where the internal box temperatures can rob you of performance. Heavy gauge powder coated stamped steel basket provides a solid base for the motor system and moving parts and delivers big bass in a small space that does not totally consume your cargo space. UVA Protected, water resistant polypropylene cone with Polyether foam surround and FEA designed subzone resists the damaging UV rays found in automotive applications. Strong fiber blend resists softening and sagging over time so you can enjoy many years of listening pleasure.