Description
Alpine M-A120M Mono Marine Amplifier
Built to deliver deep, powerful bass on the water, the Alpine M-A120M provides up to 1,200 watts RMS of dedicated subwoofer power in a rugged marine-ready design. Advanced tuning controls, intelligent thermal management, and an IPX6-rated waterproof chassis make it an ideal solution for high-performance marine audio systems.
Overview
Bass Built to Be Felt
The M-A120M delivers 1,200 watts RMS at both 2Ω and 1Ω, or 600 watts RMS at 4Ω, making it easy to power one or two compatible marine subwoofers. Its dedicated mono design provides the output needed for deep, controlled bass throughout the boat.
- 1,200W RMS at both 2Ω and 1Ω.
- 600W RMS at 4Ω.
- 1-ohm stable amplifier design.
Marine Protection
Built for Harsh Marine Environments
An IPX6-rated waterproof chassis, salt, fog, and UV resistance, along with a watertight control cover and protective terminal boots, help safeguard the amplifier against demanding marine conditions.
- IPX6-rated waterproof chassis.
- Salt, fog, and UV resistant.
- Watertight control cover and terminal protection.
Bass Tuning
Advanced Controls for Precise Low-Frequency Performance
Reliability
Designed for Extended Playback
A large finned heat sink and advanced thermal protection automatically manage amplifier output during high-temperature operation, restoring full performance once normal operating temperatures return.
Installation
Installer-Friendly Connections
One-side terminal placement, detachable ABYC-compliant terminals, dual mono speaker outputs, high- and low-level inputs, and compatibility with the optional RUX-M-UNIV Bass Knob simplify installation and system integration.
| Amplifier Type | Mono Marine Subwoofer Amplifier |
| Power @ 4Ω | 600W RMS × 1 |
| Power @ 2Ω | 1,200W RMS × 1 |
| Power @ 1Ω | 1,200W RMS × 1 |
| Frequency Response | 10 Hz–400 Hz |
| Low-Pass Filter | 50–400 Hz, -24 dB/octave |
| Subsonic Filter | 10–50 Hz, -24 dB/octave |
| Parametric EQ | 0 to +12 dB, 30–80 Hz, Adjustable Q |
| Input Sensitivity | 200 mV–4V Low / 500 mV–10V High |
| Operating Voltage | 7–16.5V DC |
| External Fuse | 120A |
| Waterproof Rating | IPX6-Rated Chassis |
| Salt & Fog Resistance | ASTM B117 Tested |
| UV Resistance | ASTM G154 Tested |
| Power Terminals | 0 AWG (Compatible with Included 4 AWG Reducers) |
| Speaker Output Terminals | 10 AWG |
| Chassis Dimensions | 12.83" W × 6.5" D × 2.15" H |
| Overall Dimensions | 13.7" W × 6.87" D × 2.15" H |
| Mounting Pattern | 13.27" W × 5.1" D Center-to-Center |
| Mounting Spacers | Add 0.3" to Installed Height |
| Remote Level Control | Compatible with Optional Alpine RUX-M-UNIV Bass Knob |