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Hertz Mille Pro MP 25.3 Dome Tweeter

Technical Highlights

  • Power handling 120 W, impedance 4 Ohm, frequency response 1.4k-22.5k Hz.
  • Neodymium magnet, 25mm voice coil, resonance frequency 1200Hz.
  • Tetolon dome, SPL 91 dB, ferrofluid cooling for optimized performance.
  • More technical details
Normal price €99,00
Normal price €99,00 Selling price €99,00
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Mar 23, - Mar 26,
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Normal price €99,00
Normal price €99,00 Selling price €99,00

Mille Pro MP 25.3 by Hertz

The Mille Pro MP 25.3 is an outstanding dome tweeter from Hertz. With its innovative Tetolon dome and 25 mm voice coil, this tweeter delivers a wide, linear frequency response. The unique "Center Tuning Duct" and the powerful neodymium magnet ensure excellent air exchange between the dome and the loading chamber, resulting in optimal acoustics. The result is a very low resonance frequency, which significantly improves sound reproduction. Discover the technical details and special features of this tweeter below.

Technical Data

  • Size mm 29
  • Power Handling - Peak W 120
  • Power Handling - Peak Note (High-pass filtered @ 2.5kHz - 12 dB/oct.)
  • Impedance Ohm 4
  • Voice Coil Ø 25 (1)
  • Frequency Response Hz 1.4k - 22.5k
  • Magnet Size W x D x H mm 24.5 x 6 x 3.5
  • Weight kg 0.07
  • Magnet Neodymium

Physical Specifications

  • A 44 mm
  • B 41 mm
  • C 27 mm
  • D 17 mm

Electro-Acoustic Specifications

  • D mm 29
  • Re Ohm 3.9
  • Fs Hz 1200
  • Le mH 0.02
  • Vas I -
  • Mms g 0.17
  • Cms mm/N 0.1
  • BL T*m 1.6
  • Qts 0.55
  • Qes 1.98
  • Qms 0.57
  • Spl dB 91

Frequency Response

Mille Pro MP 25.3

FEATURES

Mille Pro MP 25.3

  • Soft dome made of Tetolon fiber for a natural yet detailed reproduction of musical nuances.
  • "Center Tuning Duct" geometry for lower resonance frequency and reduced harmonic distortion.
  • High-density neodymium magnet, optimized for maximum control during dynamic transients with high energy in the mid to high frequency range.
  • 25 mm ferrofluid-cooled mobile voice coil.
  • The rear chamber is filled with selected damping material and designed for lower Fs to ensure a well-damped roll-off of the high-pass frequency, allowing for a transition point with a low cutoff frequency.
  • Front plate with FEM-optimized geometry (Finite Element Modeling) for high linearity in off-axis installations.
  • Wide range of installation accessories for easy OEM integration.

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Hertz Mille Pro MP 25.3 Datasheet

Frequently Asked Questions about Mille Pro MP 25.3


What frequency ranges does the Mille Pro MP 25.3 Tweeter cover?

The Mille Pro MP 25.3 from Hertz offers an exceptionally wide frequency range of 1,400 Hz to 22,500 Hz. The use of a 25-mm voice coil and a Tetolon dome ensures this range is evenly covered. The tweeter is characterized by its ability to reach low resonance frequencies of up to 1,200 Hz, supported by a neodymium magnet system that provides high control. Musicians particularly appreciate the Mille Pro MP 25.3's ability to capture all nuances in high sound ranges, contributing to a natural and detailed musical reproduction.

How does the Tetolon dome improve the sound performance of the Mille Pro MP 25.3?

The Tetolon dome of the Mille Pro MP 25.3 delivers outstanding sound performance by providing a balanced combination of stiffness and damping. This promotes precise reproduction of musical nuances without producing harsh or distorted sound peaks. The special Tetolon fiber construction supports mid to high frequencies and maximizes the linearity of the frequency response. Additionally, it helps reduce harmonic distortions, significantly improving sound fidelity. Listeners experience a clear and detailed soundstage, ideal for audiophile applications.

What role does the neodymium magnet play in the Mille Pro MP 25.3?

The neodymium magnet of the Mille Pro MP 25.3 serves as an essential component for generating a strong magnetic field with minimal weight. This ensures that the movements of the voice coil are fast and accurate, which is particularly beneficial for dynamic transients. Thanks to the high density and magnetic strength of neodymium, greater control in the mid and high frequency range is achieved. Furthermore, the neodymium magnet contributes to reducing the overall height of the tweeter, facilitating integration into various vehicle designs and leading to efficient energy conversion.

How does the 'Center Tuning Duct' affect the sound profile of the Mille Pro MP 25.3?

The 'Center Tuning Duct' in the Mille Pro MP 25.3 is an innovative geometric solution that reduces the resonance frequencies in the Tweeter. This technology achieves an even sound distribution and minimizes harmonic distortions. Especially in high-frequency applications, the 'Center Tuning Duct' allows for clearer and more precise sound reproduction by effectively regulating air pressure. This ensures that the Tweeter can reproduce clear highs even in complex musical passages, resulting in a significantly improved listening experience.

What is the significance of the 25 mm voice coil in the Mille Pro MP 25.3?

The 25 mm voice coil of the Mille Pro MP 25.3 plays a central role in sound reproduction. It is responsible for the precise conversion of electrical signal impulses into mechanical movements that set the dome in motion. The size of the voice coil directly affects thermal load capacity and the ability to handle high power peaks. With a frequency response extending up to 22,500 Hz and a controlled impedance of 4 Ohms, the voice coil ensures undistorted sound even at high volumes. The use of ferrofluid for cooling increases the longevity and efficiency of the Tweeter.

What is the maximum power the Mille Pro MP 25.3 Tweeter can handle?

The Mille Pro MP 25.3 is designed to handle a peak load of 120 Watts, which is impressive for a Tweeter of this class. This capability is supported by a sophisticated high-pass filtering at 2.5 kHz with a slope of 12 dB/octave. This technical arrangement ensures that the Tweeter delivers clear and undistorted sound even at high music volumes. The exceptional load capacity is also due to the efficient heat management of the 25 mm voice coil and the use of high-density neodymium in the magnetic system.

How is the Mille Pro MP 25.3 installed in a car?

The installation of the Mille Pro MP 25.3 in the vehicle is relatively simple thanks to the front plate with FEM-optimized geometry, which offers high linearity in off-axis installations. The physical specifications, with a size of 29 mm and a weight of 0.07 kg, make it a lightweight and compact Tweeter. Therefore, it can be easily integrated into most vehicle installations, including OEM applications. The adaptability of the design ensures that the Tweeter is optimally positioned in the car to guarantee the highest sound performance.

What technical specifications are related to the impedance of the Mille Pro MP 25.3?

The Mille Pro MP 25.3 from Hertz is designed with an impedance of 4 Ohms, providing an ideal balance between sound quality and power consumption. The Re value is 3.9 Ohms, ensuring minimal losses in signal transmission while protecting the Amplifier. This impedance level allows for broad compatibility with various amplifier systems. The electro-acoustic specifications, such as a total Q value (Qts) of 0.55 and specific losses (Qes) of 1.98, contribute to an optimized sound behavior of the Tweeter by minimizing harmonic distortions.

What is the role of the damping material in the rear chamber of the Mille Pro MP 25.3?

The damping material in the rear chamber of the Mille Pro MP 25.3 has a crucial impact on sound performance. It is responsible for the well-damped transition of the high-pass frequency, achieving a low cutoff frequency. The specific damping reduces unwanted resonances and noise that could arise from rear sound reflections. This acoustic optimization significantly improves sound quality by ensuring a clean frequency roll-off, which is particularly beneficial in critical analysis environments and audiophile applications.

What Thiele-Small parameters does the Mille Pro MP 25.3 offer?

The Mille Pro MP 25.3 is characterized by specific Thiele-Small parameters that define its electro-acoustic performance. These parameters include a total quality factor (Qts) of 0.55, an electrical quality factor (Qes) of 1.98, and a mechanical quality factor (Qms) of 0.57. The mechanical compliance value (Cms) is 0.1 mm/N, contributing to the control of the diaphragm's oscillation movements. The Bl value of 1.6 T*m indicates the electromagnetic driving force of the voice coil. These parameters are crucial for tuning to various acoustic environments and ensure that the Tweeter operates precisely and without distortion.

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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