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Technical Highlights

  • The amplifier offers 1000 W of power with a stability of 1 Ohm.
  • Flexible supply voltage range from 6.5 to 17 VDC.
  • Has an impressive signal-to-noise ratio of 110 dBA.
  • More technical details
Normal price €690,00
Normal price €690,00 Selling price €690,00
5% discount with prepayment
inkl. VAT , possibly plus shipping
Delivery
Apr 20, - Apr 23,
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Normal price €690,00
Normal price €690,00 Selling price €690,00

HMD1 by Hertz

HMD1 is a 1-Channel Amplifier from Hertz with a total RMS power of 1000 Watts. Output power: 500 Watts at 4 Ω, 800 Watts at 2 Ω, and 1000 Watts at 1 Ω. The minimum load impedance is 1 Ohm. The supply voltage is 11–15 VDC with 2 x 30 A fuses, operating at 6.5–17 VDC. Idle current is 1.3 A, idle current when off is 0.05 mA, consumption at 14.4 VDC and 2 Ω (max. music power) is 50 A. Inputs: Pre-In via RCA and wired speaker inputs; input sensitivity Pre-In selectable 0.6–2.0–6.0 VRMS, Speaker-In selectable 2.0–6.5–20 VRMS. Distortion (THD) @ 1 kHz, 4 Ω, 70% rated power 0.1%, damping factor @ 1 kHz, 4 Ω, 2 VRMS 140, bandwidth @ -1.5 dB 10 Hz–500 Hz, signal-to-noise ratio (A-weighted @ 1 V input) 110 dBA. Adjustable crossovers and ART automatic on/off for OUTPUT BTL speakers (selectable) 2–7 VDC, remote IN 6.5–15 VDC (1 mA). Dimensions 243 x 48 x 159 mm and weight 1.98 kg.

Features
  • 1-Channel Amplifier
  • Channels: 1
  • Output power 1 channel @ 4 Ω: 500 Watts
  • Output power 1 channel @ 2 Ω: 800 Watts
  • Output power 1 channel @ 1 Ω: 1000 Watts
  • Total RMS power: 1000 Watts
  • Minimum load impedance: 1 Ohm
  • Supply voltage: 11–15 VDC
  • Fuses: 2 x 30 A
  • Operating supply voltage: 6.5–17 VDC
  • Idle current: 1.3 A
  • Idle current when off: 0.05 mA
  • Consumption @ 14.4 VDC, 2 Ω, max. music power: 50 A
  • Adjustable crossovers: yes
  • Pre-In inputs: RCA
  • Speaker inputs: wired
  • ART automatic on/off for OUTPUT BTL speakers (selectable): 2–7 VDC
  • Remote IN: 6.5–15 VDC (1 mA)
  • Dimensions (W x H x D): 243 x 48 x 159 mm
  • Weight: 1.98 kg
Technical Specifications
  • Distortion – THD @ 1 kHz, 4 Ω, 70% rated power: 0.1%
  • Damping factor @ 1 kHz, 4 Ω, 2 VRMS: 140
  • Bandwidth @ -1.5 dB: 10 Hz – 500 Hz
  • Signal-to-noise ratio (A-weighted @ 1 V input) Master input: 110 dBA
  • Input sensitivity Pre-In selectable: 0.6 – 2.0 – 6.0 VRMS
  • Input sensitivity Speaker-In selectable: 2.0 – 6.5 – 20 VRMS

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Hertz HMD1 Datasheet

Frequently Asked Questions about HMD1


How much power does the HMD1 Amplifier provide?

The Marine Amplifier HMD1 from Hertz delivers substantial power of up to 1000 Watts at a minimum load impedance of 1 Ohm. At 2 Ohms, it can output 800 Watts, and at 4 Ohms, it reaches 500 Watts. This high power allows for powerful support of subwoofers, making it ideal for use on boats. Hertz places special emphasis on the combination of power and sound precision to ensure an impressive audio experience in a marine environment.

What frequencies can the HMD1 amplify?

The Hertz HMD1 Amplifier offers a bandwidth of 10 Hz to 500 Hz at -1.5 dB, making it particularly suited for low frequencies like bass. These features make it ideal for amplifying deep frequencies with high precision and low distortion. The adjustable crossovers allow for flexible customization, enabling the realization of individual sound profiles. An enhanced signal-to-noise ratio of 110 dBA (A-weighted) at 1 Volt input ensures the highest sound quality.

How robust is the HMD1 for marine use?

The HMD1 from Hertz is designed for tough marine use, with a robust housing and an optimized circuit that operates between 6.5 VDC and 17 VDC supply voltage. Its compact size, measuring 243 x 48 x 159 mm and weighing 1.98 kg, makes it resilient against environmental conditions on the water. With a no-load current of only 1.3 A and 0.05 mA in the off state, its efficiency ensures that power supply and performance remain optimal even under demanding conditions.

What types of inputs does the HMD1 offer?

The HMD1 Amplifier from Hertz features a variety of input options that allow for flexible installation. Key options include pre-in inputs via RCA and speaker-bound inputs via cables. The input sensitivity for pre-in is selectable between 0.6 - 2.0 - 6.0 VRMS, while the speaker-in sensitivity ranges from 2.0 - 6.5 - 20 VRMS. This selection facilitates adaptation to various audio systems and ensures optimal audio performance in different configurations.

Can the HMD1 be turned on and off independently?

Yes, the HMD1 from Hertz has an automatic on and off function known as the ART function. It uses a remote control voltage between 6.5 - 15 VDC (1 mA) for control, making operation and power management easier, especially on boats. This function contributes to energy efficiency by activating the amplifier when needed and turning it off when not in use, which extends the battery life.

What is the distortion rate of the HMD1?

The HMD1 Marine Amplifier impresses with a very low distortion rate of 0.1% total harmonic distortion at 1 kHz, 4Ω, and 70% rated power. This ensures that audio signals are transmitted accurately and without significant sound distortions at high power. The excellent damping factor of 140 at 1 kHz and 4Ω helps optimize speaker control, preserving detail accuracy and sound fidelity, thus guaranteeing a flawless listening experience.

What about the installation and compatibility of the HMD1?

The installation of the HMD1 is straightforward due to its compact design and dimensions of 243 x 48 x 159 mm. It fits into tight spaces and supports various speaker systems, with a minimum load impedance of 1 ohm. When installing, the minimum load impedance of 1 ohm must be considered, allowing for flexible use with subwoofers. The precise dimensions facilitate adaptation to boat systems without taking up available space, ensuring optimal use.

What are the power supply requirements of the HMD1?

The power supply requirements of the HMD1 are flexible and optimally designed for marine use. With an operating voltage of 6.5 to 17 VDC and a supply of 11 to 15 VDC with a 2 x 30A Fuse, it is well-equipped. The average current consumption at 14.4 VDC and full music power is 50 A, highlighting its performance capabilities. This means that the HMD1 can be used on different types of boats without loss of power.

How does the signal-to-noise ratio of the HMD1 perform?

The Hertz HMD1 Amplifier has an excellent signal-to-noise ratio, which (A weighted) is at 1 V input and 110 dBA master input. This specification ensures that the amplifier delivers crystal-clear sound without disturbing background noise. This is especially important when used in marine environments, where various interference factors can occur. The HMD1 thus provides an optimal listening experience, ensuring clear and powerful sound even at low input levels.

What is the function of the damping factor in the HMD1?

The damping factor of the HMD1 from Hertz is 140 at 1 kHz, 4Ω, and 2 VRMS, which means excellent speaker control. A high damping factor helps ensure that the movement of the speaker diaphragm is precisely controlled, leading to lower distortions and increased sound accuracy. This is crucial in loud environments like on the water to keep the sound pure and detailed. The HMD1 thus offers an uncolored sound image even at maximum power.

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