Hertz HMD8 DSP 8-channel amplifier

Name: Hertz HMD8 DSP 8-Channel Amplifier | Masori
Brand: Hertz
Price: 934.15 EUR
Availability: InStock

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Hertz HMD8 DSP 8-channel amplifier

Power per channel: 130 watts at 2 Ω, 85 watts at 4 Ω.
Minimum load impedance 2 Ω, distortion only 0.06% at 4 Ω.
Bandwidth from 10Hz to 22kHz, signal-to-noise ratio 105 dBA.
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HMD8 DSP by Hertz

The 8-Channel Marine Amplifier HMD8 DSP from Hertz: Experience redefined sound with this high-quality audio technology. With a user-friendly DSP PC software interface and impressive power, the HMD8 DSP can control your entire speaker system and deliver crystal-clear sound pressure in up to three different zones of your boat. Thanks to its robust construction and corrosion-protected circuit board, it guarantees years of listening pleasure on open water. Powerful, durable, and designed for an unparalleled sound experience – that is the HMD8 DSP from Hertz.

Key Features

Power Supply

Operating supply voltage 11 - 15 VDC / 2 x 30A
Power supply 6.5 V - 17 V
Idle current 1.6 A
Off 1.7 mA
Consumption @ 14.4 VDC, 2Ω, max. musical power 55 A
Remote-IN voltage 6 - 15 VDC (1 mA)
Remote-OUT voltage 4 - 15 VDC (150 mA)

Audio Specifications

Amplifier

Distortion - Total Harmonic Distortion @ 1 kHz, 4Ω, 70% rated power 0.06%
Damping factor @ 1 kHz, 4Ω, 2 VRMS > 110
Bandwidth @ -1.5 dB 10Hz - 22kHz
Signal-to-noise ratio (A-weighted @ 1 V input) Master input 100 dBA
Signal-to-noise ratio (A-weighted @ 1 V input) Optical input 105 dBA
Input sensitivity Pre-In 0.6 - 6 VRMS
Input sensitivity Speaker-In 2.2 - 22 VRMS
Minimum load impedance

8 channels: 2 Ω
4Ch - (Bridge 1/2; 3/4; 5/6; 7/8): 4Ω

Output power (RMS) @28.8 VDC, 1% THD:

8 channels @ 4 Ω 85 Watts x 8
8 channels @ 2 Ω 130 Watts x 8
4Ch (Bridge 1/2; 3/4; 5/6; 7/8) @ 4Ω 260 Watts x 4

Digital Signal Processor

Filter type Full / High-pass / Low-pass / Band-pass
Filter model and slope Butterworth (6, 12, 18, 24, 30, 36, 42, 48, 54, 60 dB/octave) Linkwitz-Riley (12, 24, 36, 48, 60 dB/octave) Bessel (6, 12, 18, 24, 30, 36, 42, 48, 54, 60 dB/octave) Chebyshev (6, 12, 18, 24, 30, 36, 42, 48, 54, 60 dB/octave) Quasi-linear QLP phase (6, 12 dB/octave)
Crossover frequency 20 Hz – 20000 Hz integer values
Phase control 0° - 180°
Output Equalizer

Graphic and Parametric modes n. 10 parametric poles (Peaking, High Shelf, Low Shelf, Notch, All Pass) ±12 dB gain, variable Q (0.5 – 16.0)
n. 10 graphic poles

Time alignment distance 0 - 54 inches
Time alignment delay 0 - 15 ms
Time adjustment step 1 cm
Memories

n. 2 memories
n. 3 parametric poles for each memory (Peaking, High Shelf, Low Shelf) ±12 dB gain, variable Q (0.5 – 16.0)

Preset rotary switch for 7 installation presets

Physical Specifications

HMD8 DSP

Max. size W x H x D (mm) 238 x 49.5 x 155
Weight (kg) 1.98

Input / Output

HMD8 DSP

Hertz HMD8 DSP Datenblatt

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Frequent questions about HMD8 DSP

Wie wirkt sich der DSP in HMD8 DSP von Hertz auf den Klang aus?

The digital signal processor (DSP) in the HMD8 DSP has a significant impact on sound output by enabling the use of full, high, or low-pass filters as well as band-pass filters. It offers various filter models such as Butterworth, Linkwitz-Riley, Bessel, Chebyshev, and quasi-linear phases with slopes ranging from 6 dB/octave to 60 dB/octave. Different filter slopes can drastically influence the sound character by isolating or blending frequencies. With a crossover frequency range of 20 Hz to 20 kHz, precise sound calibration is made possible, which can be adjusted via the DSP PC software.

Welche Stromversorgung benötigt der Hertz HMD8 DSP?

The Hertz HMD8 DSP requires a supply voltage of 11 to 15 VDC and is powered by a maximum current of 2 x 30A to unleash its full power. The idle current is 1.6 A, while the consumption reaches 55 A at full musical power. A Remote-IN voltage between 6 and 15 VDC at 1 mA is provided, whereas the Remote-OUT voltage ranges from 4 to 15 VDC at 150 mA. These technical parameters allow for efficient integration and correct voltage supply for optimal operation on a ship.

Welche Audioleistungen hat der HMD8 DSP Marine-Verstärker?

The HMD8 DSP delivers 85 watts at 4 ohms and 130 watts at 2 ohms for 8 channels with a supply of 28.8 VDC and 1% THD. In bridge mode, 4 channels can be connected in parallel to produce 260 watts per channel at 4 ohms. This power is ideal for marine applications, where different zones require different speaker configurations. Distortion remains below 0.06% at lower ratings, while the damping factor is over 110, indicating excellent control over the speaker diaphragm, which is essential for clean sound.

Welche Funktion hat das Signal-Rausch-Verhältnis im HMD8 DSP?

The signal-to-noise ratio (SNR) is crucial for the HMD8 DSP as it affects audio quality by indicating the measure of the difference between the signal level and the noise. The master input shows an extremely low background noise of 100 dBA, while the optical inputs even boast 105 dBA. High dBA values here mean less audible noise compared to the useful signal, resulting in a clean, clear sound image, which is particularly important in demanding audio applications on the water.

Welche Rolle spielt die Eingangs- und Ausgangsempfindlichkeit beim HMD8 DSP?

The input and output sensitivity is crucial for the compatibility and adaptability of the HMD8 DSP. The Pre-In input sensitivity varies between 0.6 and 6 VRMS, while the Speaker-In input sensitivity ranges from 2.2 to 22 VRMS. This allows for the adjustment of the amplifier to different signal sources and their output levels, ensuring that gain and volume are optimally matched. Too high input gain could lead to clipping, so precise calibration is important to avoid distortion and power losses.

Wie steigert der Hertz HMD8 DSP die Klangqualität?

The Hertz HMD8 DSP significantly improves sound quality through its parametric equalizer, which offers ten parametric poles, including Peaking, High Shelf, Low Shelf, Notch, and All Pass with a gain of ±12 dB and a variable Q of 0.5 to 16. Additionally, there are ten graphic poles for adjustments. These detailed regulations allow for fine-tuning of the sound based on the specific acoustic properties of a room or vessel, resulting in a customized and high-quality listening experience.

Welche Kompatibilität bietet der HMD8 DSP bei minimaler Last?

The HMD8 DSP from Hertz demonstrates high compatibility with various speaker systems due to its minimal load impedance of 2 ohms at eight channels and 4 ohms in bridge mode. This variability allows for the connection of a wide range of speaker types that have different load requirements. This versatility is particularly advantageous for larger sound installations on ships, where a complex multi-zone system is required. By adapting to different ohm values, optimal performance is ensured, enabling stable operation with various speaker configurations.

Wie gestaltet sich die Installation des HMD8 DSP im Schiff?

The installation of the HMD8 DSP from Hertz requires consideration of its physical specifications of 238 mm width, 49.5 mm height, and 155 mm depth, as well as a weight of 1.98 kg. These dimensions allow for easy integration into various boat configurations. The corrosion-protected circuit board also ensures protection against moisture in marine environments. A suitable placement that allows for adequate air circulation is essential for heat dissipation to maintain the efficiency and longevity of the amplifier. The wiring should be matched to safe voltage levels to ensure optimal functionality.

Wie lässt sich der HMD8 DSP von Hertz an unterschiedliche Soundsettings anpassen?

The HMD8 DSP offers seven installation presets via a rotary switch, allowing for quick and easy adjustments to different sound settings. Each zone on the ship can be individually tuned, which is particularly advantageous for various musical preferences. Additionally, through the DSP-PC software, you can set specific configurations to achieve more bass or clearer highs, for example. This allows for a variable sound profile to create the best possible audio experience depending on the environment and musical genre.

Welche Vorteile bietet die Verarbeitung des HMD8 DSP im Marinebereich?

In the marine sector, the HMD8 DSP offers significant advantages due to its robust construction and corrosion-protected circuit board. These features ensure a long lifespan and reliable performance under extreme conditions such as moisture, salt, and temperature fluctuations. The protective mechanisms prevent electrical damage and guarantee consistent performance, even when the ship is subjected to vibrations and shocks. The durable materials and targeted processing make this amplifier an ideal choice for any boat owner who values consistently excellent sound quality.

Herstellerinformation/verantwortliche Person

Elettromedia SpA
62018 Potenza Picena (MC)
Strada Regina km 3,500
Italy

Contact person:
Simone Iampieri
Executive Director Assistant
T +39 0733 870 813
Elettromedia SpA
62018 Potenza Picena (MC) Italy
Strada Regina km 3,500
T + 39 0733 870 870

Contact: simone.iampieri@elettromedia.it

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