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Hertz HMX 8-TW (B-Ware) 8" (20cm) Coaxial Speaker

Technical Highlights

  • 100 W RMS, 4 Ohm Impedanz, 200 W Peak, 45-25k Hz Frequenz.
  • UV-beständige Polypropylen-Membran, Santoprene-Sicke.
  • Aramidzentrierung, silikonisolierte Anschlussdrähte, langlebig.
  • More technical details
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Normal price €195,30
Normal price -30% €279,00 Selling price €195,30
5% discount with prepayment
inkl. VAT , possibly plus shipping
Only a few left in stock (1 pieces available)
In stock
Mar 22, - Mar 23,
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Normal price €195,30
Normal price €279,00 Selling price €195,30

HMX 8-TW (B-Ware) by Hertz

B-stock due to damaged or incomplete original packaging, or minor cosmetic defects. The same warranty conditions apply to B-stock as to our A-stock. Product is technically flawless.

The HMX 8-TW is a high-performance 8-inch marine coaxial speaker provided by the renowned supplier Hertz. It is known for its above-average durability and consistent performance, driven by a massive magnet to deliver high, undistorted sound pressure. The Tweeter of this model is specifically optimized for off-axis operation, maximizing the sound pressure level. The UV-resistant polypropylene membrane, combined with a high-temperature and UV-resistant polymer, ensures additional protection against water, dust, and mud. Together with the HMX 8-TW, you get a device that perfectly combines quality and durability.

Technical data

  • Size mm 200
  • Power handling - RMS W 100
  • Power handling - Peak W 200
  • Impedance Ohm 4
  • Depth mm 123
  • Tweeter membrane mm 36
  • Woofer voice coil Ø mm 32
  • Tweeter voice coil Ø mm 20
  • Frequency response Hz 45 - 25k
  • Woofer magnet size B x T x H mm 90 x 40 x 20
  • Tweeter magnet size B x H mm 19.7 x 3
  • Weight of a speaker kg 1.66
  • Woofer magnet high-density flux ferrite
  • Tweeter magnet neodymium
  • Membrane polypropylene with UV inhibitors
  • Xmech mm ±8.5

Electro-acoustic specifications

  • D mm 174
  • Re Ohm 3.1
  • Fs Hz 50
  • Le mH 0.52
  • Vas I 29.46
  • Mms g 27.3
  • Cms mm/N 0.37
  • Bl T*m 6.6
  • Qts 0.58
  • Qes 0.61
  • Qms 11
  • Spl dB 91

Physical specifications

HMX 8-TW

  • A 225 mm
  • B 180 mm
  • C 123 mm
  • D 91 mm
  • F 32 mm

Frequency response

Features

  • Designed and tested for real-world application environments (UV, salt mist, vibrations, splash water, temperature shock, dust).
  • 1.4-inch neodymium magnet Tweeter with a PEI material dome combined with front plate and acoustic lens, optimized for best off-axis radiation and highest sound pressure level.
  • Sound-transparent tone-on-tone Tweeter grille made of stainless steel, providing efficient high-frequency transmission, an attractive appearance, and rock-solid protection.
  • Long-stroke 25 mm voice coil woofer finely tuned for infinite baffle applications with polypropylene membrane featuring UV inhibitors and molded Santoprene surround.
  • Aramid fiber spider with silicone-insulated connection wires, ensuring durability and consistent performance over time.
  • FEM-optimized mobile devices with high excursion, powered by a massive magnetic group encapsulated in a marine-grade injected polymer basket.
  • Sealed built-in Crossover with resettable solid-state Tweeter protection circuit.
  • Gold-plated corrosion-resistant terminals.

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Frequently Asked Questions about HMX 8-TW (B-Ware)


What are the main features of the HMX 8-TW Marine Coaxial Speaker?

The HMX 8-TW from Hertz is an 8-inch marine coaxial speaker that stands out due to its durable materials and robust construction. Notably, the UV-resistant polypropylene diaphragm effectively repels water and dirt. The tweeter is optimized for off-axis operation, allowing for high, clear sound pressure. With a power handling of 100 watts RMS and a peak value of 200 W, the speaker delivers excellent performance. The massive magnet of the woofer and the neodymium magnets of the tweeter complement each other ideally for maximum acoustic efficiency.

How does the off-axis operation of the HMX 8-TW affect the sound?

In the HMX 8-TW from Hertz, the tweeter is specifically optimized for off-axis operation. This means that the speaker delivers clear and balanced sound even when it is not directly aimed at the listener. This feature enhances sound distribution, especially in open or asymmetrical environments like on boats. The integrated neodymium magnet and the PEI material dome also contribute to efficient high-frequency transmission, significantly improving the listening experience.

What frequency ranges does the HMX 8-TW cover?

The Hertz HMX 8-TW covers a wide frequency spectrum from 45 Hz to 25 kHz. This means that the speaker can reproduce deep bass as well as high frequencies clearly and accurately, ensuring a balanced sound profile. The long-stroke woofer with an Xmech of ±8.5 mm, combined with the finely tuned 25 mm voice coil, provides impressive low-frequency performance. Such a frequency range is ideal for those who want to experience a full sound spectrum on their boat.

What materials ensure the robustness of the HMX 8-TW?

The robustness of the HMX 8-TW from Hertz is ensured by the careful selection of materials. The diaphragm is made of UV-resistant polypropylene, which not only has excellent acoustic properties but also protects against external influences such as UV radiation, water, and dust. A massive flux ferrite magnet in the woofer and a neodymium magnet in the tweeter further enhance performance and durability. Additionally, an aramid fiber spider and silicone-insulated connection wires make the speaker particularly resilient and long-lasting in performance.

What are the dimensions of the HMX 8-TW and how do they affect installation?

The Hertz HMX 8-TW has a diameter of 8 inches (200 mm) and a mounting depth of 123 mm. These dimensions allow for flexible installation in most common boat installation locations. The diaphragm has a diameter of 225 mm, while the woofer's B x T x H magnet measures 90 x 40 x 20 mm. Delivered with a well-thought-out mounting system, the speaker can be seamlessly integrated, with the gold-plated corrosion-resistant terminals ensuring a secure connection. The measurements are crucial to ensure that the speaker fits into existing cutouts.

What makes the magnet structure of the HMX 8-TW so effective?

The HMX 8-TW from Hertz uses a particularly effective magnet structure for its woofer and tweeter. The woofer is equipped with a flux ferrite magnet that has a high density, resulting in powerful and precise bass reproduction. The tweeter utilizes a neodymium magnet that is compact and lightweight but offers remarkable magnetic properties to efficiently transmit high frequencies. This combination ensures a balanced sound and optimal performance, even under the demanding conditions of marine use.

How does the design of the HMX 8-TW contribute to its durability?

The thoughtful design of the HMX 8-TW by Hertz promotes its exceptional durability. The speaker is embedded in a board made of polymer marine material, which provides additional structural integrity. The injected polymer structure and UV-resistant membrane make it particularly resistant to environmental influences. Furthermore, the silicone-insulated wiring with water-repellent properties offers additional protection, while the FEM-optimized moving components allow for high displacement and ensure acoustic performance.

What features does the tweeter of the HMX 8-TW have?

The HMX 8-TW by Hertz is equipped with a tweeter featuring a 1.4-inch neodymium magnet and PEI dome. This combination is designed to deliver the best sound pressure level even off-axis. The acoustic lens significantly optimizes high-frequency distribution, while the stainless steel grille not only provides protection but also ensures sound-transparent performance. The built-in crossover with a resettable solid-state protection circuit is designed to prevent any overloads, thus ensuring the best acoustic performance and reliability.

What role does the voice coil play in the HMX 8-TW?

The HMX 8-TW by Hertz is equipped with a 32 mm voice coil for the woofer and a 20 mm voice coil for the tweeter. These coils are crucial for sound dynamics and control. The 32 mm voice coil of the woofer allows for high load capacity and displacement, while the 20 mm voice coil of the tweeter ensures precise high-frequency reproduction. The coil materials are designed for high temperatures to minimize heat generation and reliably maintain performance even during prolonged operation.

How does the crossover of the HMX 8-TW contribute to the sound?

The crossover in the HMX 8-TW by Hertz plays a critical role in sound optimization. It is sealed and integrates a resettable solid-state tweeter protection circuit. This ensures that the transition between the tweeter and woofer occurs seamlessly, allowing for clear sound separation. The protection mechanism of the tweeter minimizes the risk of overloads by effectively distributing the signals according to their frequency to the respective driver systems. This ensures a harmonious balance in the sound image, enhancing the overall experience factor of the speaker.

Manufacturer information / responsible 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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