The Meyer 650-P is a dual 18" powered subwoofer that provides reinforcement of the lower range frequencies for Meyer Sound systems. With a frequency response of 28 to 120 Hz, this unit extends the bass response of your sound reinforcement system while minimizing distortion. The two 18" drivers provide long excursion and accurate reproduction of low notes, making the 650-P ideal for any live music or theatrical performance. The Tru Power Limiting provides driver protection under extreme operating conditions, ensuring that your unit will handle whatever you throw at it. The Meyer 650P also features the Intelligent AC system, which ensures smooth and efficient operation. Plus, it's easy to install - just plug in an audio input signal and AC power. Its built-in amplifier module is designed for reliability and outstanding performance, and if service is required, it can be facilitated by the convenient modular design.