Hertz PowerSports HMP 1D Marine 1 Channel Mono Subwoofer Amp Amplifier 300w RMS
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The Hertz HMP 1D is a mono (1 channel) marine and powersports subwoofer amplifier from the Hertz PowerSports HMP range, delivering 180W x 1 at 4 ohms and 300W x 1 at 2 ohms RMS at 14.4V. Its IP64-rated cast-aluminium chassis makes it suitable for UTV, ATV, motorcycle and boat installations, and an HRC BM remote bass level control is included.
Key specifications
- Channels: 1 (mono)
- Output power (RMS @ 14.4V): 180W x 1 at 4 ohms, 300W x 1 at 2 ohms (10% THD); 150W x 1 at 4 ohms, 250W x 1 at 2 ohms (1% THD)
- Chassis: cast aluminium, IP64 rated
- Low-pass filter: 65 / 85 / 115 Hz @ 12 dB/octave, or bypass
- Subsonic filter: off / 22 / 32 Hz @ 12 dB/octave
- Signal to noise ratio: 105 dB
- Distortion (THD @ 100Hz @ 4 ohms): 0.1%
- Damping factor (100Hz @ 4 ohms): 300
- Remote: HRC BM remote level control included
- Size (W x D x H): 223 x 100.5 x 43.6 mm
Marine and powersports mono amplifier
The HMP 1D's ultra-compact IP64-rated cast-aluminium chassis makes it resistant to dust and water ingress, making it a practical choice for UTV, ATV, motorcycle and boat installations. It offers a high power-to-size ratio and straightforward setup via its integrated crossover filter.
The front end section includes a fully bypassable crossover system, allowing flexible system design with or without external processors. Balanced input circuitry provides high rejection of electro-magnetic interference for noise-free results. Volume level can be adjusted remotely using the included HRC BM (Hertz Remote Control Bass Management), connected via the remote control plug for precise control from the driver's seat.
- Channel mode: 1
- Output power (RMS @ 14.4V): 180W x 1 (4 ohms), 300W x 1 (2 ohms)
- Distortion — THD (100Hz @ 4 ohms): 0.1%
- S/N ratio (A-weighted @ 1V): 105 dB
- Damping factor (100Hz @ 4 ohms): 300
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Specification
| Output Power (RMS) @ 14.4 VDC, THD 10% | 180 W x 1 (4 Ohms) |
|---|---|
| Output Power (RMS) @ 14.4 VDC, THD 1% | 150 W x 1 (4 Ohms), 250 W x 1 (2 Ohms) |
| Filters | Bypass, Lo-Pass (65-85-115 Hz @ 12 dB/Oct.), |
| Distortion - THD (100Hz @ 4 Ohms) | 0.1 % |
| S/N Ratio (A weighted @ 1V) | 105 dB |
| Damping factor (100Hz @ 4 Ohms) | 300 |
More specs
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What's Included
- Hertz HMP 1D
- HRC BM remote control (Hertz Remote Control Bass Management)
Hertz
About the Hertz HMP 1D
From our tech experts at CEN
A marine amplifier, 1 channel, rated at 300w RMS, coated and sealed against damp and salt air.
Who it suits
Boats, ribs and commercial craft, plus open builds where an amplifier will get damp.
Our tech experts advise
Mount it ventilated and as dry as the vessel allows, and fuse the feed at the battery. Marine installs want tinned cable and sealed joints throughout. get in touch and we will talk through mounting, wiring and power for your boat.
Explore the full Hertz range at CEN, with fast UK dispatch and expert advice from our Nottingham team. Shop all Hertz
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Frequently Asked Questions
Q: Is the Hertz HMP 1D waterproof?
A: It has an IP64 rated cast-aluminium chassis designed to be nature-proof, making it suitable for UTV, ATV, motorcycle and marine installations.
Q: Does the HMP 1D come with a remote bass control?
A: Yes. The HRC BM (Hertz Remote Control Bass Management) is included. It connects to the amplifier's Remote Control plug and lets you adjust the level from your seat.
Q: Does the HMP 1D have a built-in crossover?
A: Yes. It has a bypassable low-pass filter (65, 85 or 115 Hz at 12 dB/octave) and a subsonic filter (off, 22 or 32 Hz at 12 dB/octave), so it can be used with or without an external processor.
