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Hertz HMP 4D amplifier
4-channel amplifier for boats, ATVs, etc.
The Hertz HMP 4D is a compact amplifier designed for boats. Thanks to its very compact IP64-rated aluminum housing, the Hertz HMP 4 D is protected from the elements, making it an ideal amplifier for boats, ATVs and motorcycles. The amplifier has an excellent size-to-power ratio and is easy to use thanks to its integrated crossover. The crossover is also bypassable, allowing it to be used with an external processor and the filters and other adjustments can be made from there.
The signal inputs are equipped with a balanced circuit, which makes the amplifier highly effective in rejecting external magnetic fields, ensuring interference-free results. The overall level of the amplifier can be adjusted either directly from the amplifier, the audio source or the processor.
1. The Hertz Pure Marine Certified Product model designation means IP65 protection rating, UV protection according to ASTM-D4329 standard, and salt spray protection according to ASTM-B117 standard.
Features
1. The Hertz Pure Marine Certified Product model designation means IP65 protection rating, UV protection according to ASTM-D4329 standard, and salt spray protection according to ASTM-B117 standard.
2. The compact die-cast aluminum housing is IP64 rated.
3. Bass Boost function is user adjustable to boost the lowest frequencies.
4. A complete distribution filter allows for easy commissioning and flexible installation.
5. Speaker and line level connections for connecting various audio sources.
6. Specially balanced input circuit rejects electromagnetic interference.
7. Overvoltage and thermal protection with automatic reset.
Specifications
Power
Power supply and fuse: 11 ÷ 15 VDC / 1 x 15 A
Power consumption in sleep mode / off: 1.2 A / 0.04 mA
Current consumption @ 2 Ω, 14.4 VDC (at full music power): 15 A
Excitation input voltage: 4 ÷ 15 VDC - 1 mA
Automatic excitation (ART)
Amplifier
Total Harmonic Distortion - THD (100 Hz @ 4 Ω): 0.2 %
Frequency range: 10 Hz - 30 kHz
Signal-to-noise ratio: 95 dB
Damping Factor (100 Hz @ 4 Ω): 45
Input sensitivity (LO): 0.2 ÷ 5 V
Input sensitivity (HI): 0.8 ÷ 20 V
Minimum load impedance @ 4 channels: 2 Ω
Minimum load impedance @ 2 channels: 4 Ω
Continuous power ratings @ 14.4 VDC, THD 1%, 4 channels
4 x 50W @ 4Ω
4 x 65W @ 2Ω
Continuous power ratings @ 14.4 VDC, THD 1%, 3 channels
2 x 50 W @ 4 Ω + 1 x 130 W @ 4 Ω
2 x 65 W @ 2 Ω + 1 x 130 W @ 4 Ω
Continuous power ratings @ 14.4 VDC, THD 1%, 2 channels
2 x 130W @ 4Ω
Continuous power ratings @ 14.4 VDC, THD 10%, 4 channels
4 x 60W @ 4Ω
4 x 75W @ 2Ω
Continuous power ratings @ 14.4 VDC, THD 10%, 3 channels
2 x 60 W @ 4 Ω + 1 x 150 W @ 4 Ω
2 x 75 W @ 4 Ω + 1 x 150 W @ 4 Ω
Continuous power ratings @ 14.4 VDC, THD 10%, 2 channels
2 x 150W @ 4Ω
Inputs, outputs and filters
Inputs: RCA
High-pass filter: 65-85-115 Hz @ 12 dB/oct.
Low-pass filter: 65-85-115 Hz @ 12 dB/oct.
Accessories included in the package
RCA cables protected from the elements
Connections
Technologies
IP64 protection rating
The amplifier is dustproof and protected against splashing water
Water jet tested
All Hertz Marine products have an IP64 protection rating, meaning they can withstand both rain and
like splashing water and serve for a long time.
Protected from oxidation
Normal corrosion caused by humid environments is completely neutralized thanks to the amplifier's epoxy-coated, marine-grade circuit boards.
Salt spray tested
To meet the requirements set by the ASTM-B117 standard, Hertz Marine products are tested by blasting them with a massive salt spray to ensure they are free from oxidation.
Dimensions
Width: 223mm
Depth: 100.5 mm
Height: 43.6 mm