Mono Class D Bass Amplifier

The Zapco ST-1650XM II is a high-performance mono Class D bass amplifier engineered to deliver exceptional low-frequency output. This amplifier boasts a powerful 1650 watts RMS at 1 ohm, 1100 watts at 2 ohms, and 750 watts at 4 ohms, making it suitable for a wide range of subwoofer configurations. Its Class D topology ensures high efficiency, rated at over 85%, contributing to less heat generation and more power output. Beyond raw power, the ST-1650XM II offers extensive control over your bass. It includes a variable subsonic filter to remove unwanted ultra-low frequencies, a variable bass boost control (0dB to 12dB) with frequency adjustment (30Hz to 80Hz) to tailor the boost to your vehicle's acoustics, and a variable electronic low-pass crossover (40Hz to 180Hz). A variable phase control (0° to 180°) further allows for precise integration with your system, ensuring optimal bass response regardless of enclosure placement. All adjustments can be easily made via the included dash-mount remote gain control. This amplifier also supports strapping capabilities, allowing two ST-XM amplifiers to be bridged together for even greater power output. With a frequency response of 10Hz to 200Hz ±1dB and a signal-to-noise ratio greater than 85dB, it ensures a clean and dynamic bass signal. Its compact dimensions (160mm W x 52mm H x 353mm L overall) facilitate easier installation in various vehicle locations.