Monacor SAM-300D Class D Active Subwoofer Module

The Monacor SAM-300D Subwoofer Plate Amplifier is a high-performance solution for integrating deep, controlled bass into your custom loudspeaker projects. Designed for DIY enthusiasts and professional installers alike, this Class D amplifier delivers exceptional power efficiency and audio clarity within a compact, panel-mounted format.

Ideal for home theatre systems, Hi-Fi setups, or custom subwoofer enclosures, the SAM-300D provides the flexibility to tailor low-frequency response to your specific listening environment. Whether you are upgrading an existing speaker or building a dedicated subwoofer from scratch, this amplifier ensures seamless integration with both line-level and high-level inputs, making it suitable for a wide range of audio sources.

Technically, the amplifier delivers 300W RMS into a minimum 4 ohm load, with a frequency response spanning 20 to 200 Hz for authoritative, distortion-free bass. It features one RCA input and one RCA output, along with a high-level input for connection to speaker terminals. The unit operates on 230 VAC via an IEC C18 power connector, with an input sensitivity of 170 mV for line-level and 1 V for high-level signals. The cut-out dimensions are 168 mm × 235 mm, and overall dimensions are 188 x 255 x 90 mm, ensuring straightforward installation into standard panel openings.

In summary, the Monacor SAM-300D combines robust power, versatile connectivity, and efficient Class D operation, making it an excellent choice for achieving professional-grade bass performance in any custom audio project.