Compact Yet Powerful: Rockville RTB65A delivers 300W peak power (150W RMS) with a 6.5" high-power woofer for punchy, deep bass in a small package. Integrated Amplifier: Built-in 150W RMS amplifier perfectly matches the subwoofer and enclosure for optimized sound performance. Customizable Sound Control: Adjustable bass crossover and an MP3 input with volume control allow seamless integration and sound tuning for your car audio system. Durable Vented Design: Aviation-grade tweed-covered tubular enclosure with a rear aero vent system enhances bass response and durability. Easy Installation: Includes speaker-level and RCA line-level inputs, steel mounting brackets, and Velcro straps for hassle-free setup in any vehicle.