Hertz Audio HMD1 Class D Marine Mono Amplifier 500W RMS

The Hertz Audio HMD1 is a high-performance Class D monoblock marine amplifier engineered specifically for powering marine subwoofers in the harsh marine environment. This compact amplifier is 1-ohm stable and delivers up to 1000W RMS at 1 ohm, making it the ideal power extension for the Hertz HMD8 DSP or any marine audio system requiring powerful low-frequency output.

Power Output:

• 500W RMS x 1 channel at 4 ohms
• 800W RMS x 1 channel at 2 ohms
• 1000W RMS x 1 channel at 1 ohm

Marine-Grade Protection:

• IP64 protection grade provides total protection against water jets
• Epoxy-coated marine-grade PCB boards prevent electronics corrosion in wet environments
• ASTM-B117 certified for complete resistance to salt fog corrosion
• Conformal coated PCB resists damage from humidity and UV rays

Advanced Features:

• Hertz Advanced D-Class output stage combines maximum sound quality with unmatched efficiency
• Variable Lo-Pass filter (50-250 Hz at 12 dB/Oct)
• Adjustable Bass Boost (0 to +12 dB at 45 Hz)
• Subsonic filter (25 Hz at 24 dB/Oct)
• Phase control (0-180°) for optimal system integration
• ART (Automatic Remote Turn-on/off) function with remote control voltage 6.5-15 VDC
• Balanced inputs effectively reject electromagnetic interference

Technical Specifications:

• Total Harmonic Distortion: 0.1% at 1 kHz, 4Ω, 70% rated power
• Damping factor: 140 at 1 kHz and 4Ω
• Bandwidth: 10 Hz to 500 Hz at -1.5 dB
• Signal-to-noise ratio: 110 dBA (A-weighted at 1V input)
• High-level and low-level inputs with automatic remote turn-on/off

The HMD1's ultra-compact dimensions of 243 x 48 x 159 mm allow for versatile installation in even the most confined marine spaces. This amplifier is designed for boat owners who demand uncompromising bass performance with the reliability needed for the marine environment.