Down4Sound M3-1500 (marine) - 1500W RMS Amplifier
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The DOWN4SOUND M3-1500 Marine & Off-Road Amplifier is a compact monoblock powerhouse delivering 1500 watts RMS of full-range Class D performance, engineered for serious marine and off-road applications. Built inside a rugged chassis designed for extreme environments, this amplifier is sealed to help resist moisture, salt, mud, and vibration.
Whether mounted in a boat hull, motorcycle saddlebag, side-by-side UTV, mud truck, or wake tower system, the M3-1500 delivers high-output performance with confidence.
If you demand serious output, real reliability, and a refined premium finish, this is your amplifier.
Power Output
- 1 × 1500W RMS @ 1Ω
- 1 × 1060W RMS @ 2Ω
- 1 × 700W RMS @ 4Ω
Full-range Class D circuit design for maximum efficiency and reduced heat in marine and powersports electrical systems.
- Band-pass capable for flexible system design
- RCA line output for easy system expansion
Marine & Off-Road Ready Construction
- Sealed aluminum housing
- Conformal-coated internal PCB
- Corrosion-resistant terminals
- Water-resistant construction
- Weather-resistant construction
- Engineered for vibration resistance in harsh environments
Precision Crossovers (Band-Pass Capable)
- Adjustable HPF & LPF (20Hz–800Hz)
- x10 multiplier for extended tuning range
- Band-pass capable using onboard crossovers
Compact High-Output Design
- 11.45" × 5.11" × 2.38"
- 291 × 130 × 60 mm
- Install-friendly footprint with serious output capability
Smart 4-Way Protection Circuit
- Thermal protection
- Voltage protection
- Short circuit protection
- DC overload protection
Designed for stable performance in demanding marine and off-road electrical systems.
Bluetooth Bass Knob (Optional Use)
- Includes Bluetooth bass knob controller
- Optional to use — amplifier operates fully without it
- Real-time display of volume, voltage, temperature, and clipping status
Technical Specifications
- Power: 1500W RMS total
- Channels: 1 (Monoblock)
- Class: Full-Range Class D
- Frequency Response: 10Hz–23kHz
- Input Sensitivity: 0.2V–6V
- THD: <0.1%
- S/N Ratio: >75dB
- Working Voltage: 9V–15.5V
- Fuse Rating: 150A
- Size: 11.45" × 5.11" × 2.38" (291 × 130 × 60 mm)
Use It On
- Wake boats, pontoons, jet boats
- Motorcycle baggers
- Side-by-sides and UTV builds
- Mud trucks and off-road systems
- High-output subwoofer and pro-audio marine setups
Why the M3-1500?
Because power, durability, and clean design should never be a compromise.
- The M3-1500 delivers massive output in a compact marine-ready chassis.
- Built for boats.
- Built for powersports.
- Built for serious subwoofer and pro-audio systems.
Add it to your system and keep your install powerful, clean, and professional.
Authorized Down4Sound dealer at JS Ultimate Sounds. Free shipping on orders $99+.
