AMPLIFIED SUBWOOFER 8×9″ 300/900W MAX – MPSW9

Product Overview Upgrade your vehicle’s audio setup with the Monster Audio MPSW9, an ultra-compact active under-seat subwoofer system engineered for maximum bass output in minimal space. Featuring an $8 \times 9\text{“}$ high-efficiency active woofer paired with dual passive radiators, this powered enclosure delivers deep, rich low-frequency response without requiring a large dedicated box. Equipped with an integrated Class-D amplifier, the MPSW9 offers high power output with low thermal load and minimal current draw. Its sleek profile allows for seamless under-seat installation across a wide range of trucks, sedans, and compact vehicles.

Key Features & Highlights

• Active Enclosure System: Features an $8 \times 9\text{“}$ subwoofer driver backed by dual passive radiators for enhanced bass extension.

• Built-In Class-D Amplifier: Delivers powerful, clean output while maintaining high energy efficiency.

• Space-Saving Design: Slim, low-profile footprint engineered to fit easily underneath standard car and truck seats.

• Remote Bass Control: Includes a wired remote control knob to adjust bass levels directly from the driver seat.