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Hertz SPL Show ST 25A Neo.2 Horn Tweeter
SKU:  ST-25A-NEO.2
EAN:  8018823137195

1 Review

50 Watt

SPL Show ST 25A Neo.2

SKU:  ST-25A-NEO.2
EAN:  8018823137195

1 Review

Technical Highlights

  • Lightweight, compact design, N38 H neodymium magnet, 4 ohm impedance.
  • Optimized phase plug, loading horn, aluminum membrane.
  • 100 W peak power, 3k-20k Hz frequency response, 107 dB SPL.
  • More technical details
00 d
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€160,55
-5% €169,00 €160,55
5% discount with credit card
inkl. VAT , possibly plus shipping
Delivery
Jun 6, - Jun 9,
x pair
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€160,55
€169,00 €160,55

SPL Show ST 25A Neo.2 by Hertz

The Hertz SPL Show ST 25A Neo.2 is a Horn Tweeter with an N38 H neodymium magnet and FEM-optimized driver and horn design. The construction includes an optimized phase plug, a loading horn, and an ultra-light aluminum diaphragm. The CCAR voice coil (Copper Clad Aluminium Ribbon) is designed for high thermal and mechanical demands and is prepared for easy replacement with a spare body kit. Connections are made via high-current screw terminals, and the dome is made of aluminum. Technical specifications: size 44 mm, impedance 4 Ohm, voice coil 25 mm. The frequency response ranges from 3000 to 20000 Hz, the sensitivity level is 107 dB, and the resonance frequency Fs is 3900 Hz. The peak power handling is 100 W with high-pass filtering at 5 kHz and 12 dB/Oct., and the weight is 0.39 kg. There is a body impregnation and anti-UV treatment implemented.

Features
  • Horn Tweeter
  • N38 H neodymium magnet
  • FEM-optimized phase plug and loading horn
  • CCAR voice coil (Copper Clad Aluminium Ribbon)
  • Ultra-light aluminum diaphragm
  • Dome made of aluminum
  • High-current screw terminals
  • Body impregnation and anti-UV treatment
  • Size 44 mm
  • Impedance 4 Ohm
  • Frequency response 3 kHz – 20 kHz
  • Weight 0.39 kg
Technical Data
  • Peak power handling 100 W
  • High-pass filtering 5 kHz, 12 dB/Oct.
  • Voice coil diameter 25 mm
  • Re 2.9 Ohm
  • Fs 3900 Hz
  • Le 0.03 mH
  • Bl 2.05 T·m
  • SPL 107 dB
  • D 35.5 mm
  • Dimensions A 57 mm
  • Dimensions B 43.5 mm
  • Dimensions C 55.5 mm
  • Dimensions D 29.7 mm

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Frequently Asked Questions about SPL Show ST 25A Neo.2

What performance specifications does the SPL Show ST 25A Neo.2 offer?

The SPL Show ST 25A Neo.2 from Hertz offers impressive performance specifications. With a power handling of up to 100 Watts, measured at peak, and a high-pass filter at 5 kHz - 12 dB per octave, it ensures that you receive clear and undistorted sound quality even at high volumes. The frequency response ranges from 3000 Hz to 20,000 Hz, making this tweeter ideal for high-frequency audio signals. Thanks to an impedance of 4 Ohms and a sound pressure level (SPL) of 107 dB, this tweeter can achieve outstanding volumes with low energy consumption.

How is the SPL Show ST 25A Neo.2 constructed?

The SPL Show ST 25A Neo.2 from Hertz is characterized by its high-quality construction. It uses a powerful neodymium magnet that delivers maximum power despite its compact size. The aluminum diaphragm is extremely lightweight, contributing to the maximization of the sound pressure level. Additionally, the design is FEM-optimized to enhance the acoustic performance of the phase plug and horn. With an electromechanical specificity of Bl T*m 2.05 and an FS of 3900 Hz, the tweeter is designed to ensure excellent playback quality and reliability.

What are the external dimensions of the SPL Show ST 25A Neo.2?

The physical specifications of the SPL Show ST 25A Neo.2 from Hertz are designed for a compact build. Its dimensions are 44 mm in size with a housing depth of 29.7 mm. The width and height are also adjusted to fit a variety of audio configurations: A measures 57 mm, B 43.5 mm, C 55.5 mm. These measurements make it extremely flexible for integration into different installation situations, especially in vehicles where space is often limited.

What materials are used in the SPL Show ST 25A Neo.2?

The SPL Show ST 25A Neo.2 from Hertz is equipped with high-quality materials. Among the main materials is the aluminum diaphragm, which combines lightness and durability, ideal for achieving high sound pressure with minimal weight. The neodymium magnet N38 H offers extreme power density and is crucial for the compact design of the tweeter. A CCAR voice coil made of copper-clad aluminum ribbon enhances thermal and mechanical capabilities, while the body impregnation and anti-UV treatment provide additional protective layers against environmental influences.

What are the special acoustic properties of the SPL Show ST 25A Neo.2?

The SPL Show ST 25A Neo.2 from Hertz offers many remarkable acoustic properties. The frequency response ranges from 3 kHz to 20 kHz, ideal for a versatile high-frequency reproduction. The tweeter achieves a sound pressure level of 107 dB, ensuring intense volume. The electromechanical impedance is 2.9 ohms, and the inductance is only 0.03 mH, which together ensures minimal energy loss during sound conversion. This spectral bandwidth and efficiency are crucial for users who desire maximum performance with great acoustic clarity.

What compatibility notes are there for the SPL Show ST 25A Neo.2 with vehicles?

The SPL Show ST 25A Neo.2 from Hertz is generally compatible with a variety of vehicle models due to its compact dimensions of 44 mm, although no specific brands are mentioned in the description. The enclosure depth of 29.7 mm facilitates installation in tighter spaces, as found in many modern cars. Installation is further eased by the weight-saving construction of only 0.39 kg, meaning that weight compromises do not need to be made when placing it in hard-to-reach areas.

How is the SPL Show ST 25A Neo.2 integrated into existing audio systems?

When integrating the SPL Show ST 25A Neo.2 from Hertz into an existing audio system, the specific connection requirements should be noted. The tweeter is designed for easy connection and features high-current screw terminals that allow for quick and secure installation. Adequate high-pass filtering at 5 kHz - 12 dB/octave must be set up to fully exploit the performance potential and to avoid distortion at high frequencies. The 4-ohm impedance should also be considered when connecting to amplifiers or crossovers.

How does FEM optimization affect the sound of the SPL Show ST 25A Neo.2?

The FEM optimization (Finite Element Method) of the SPL Show ST 25A Neo.2 by Hertz significantly improves sound quality. Through FEM analysis, acoustic deformations in the design of the phase plug and the loading horn are minimized, contributing to the maximization of sound efficiency. This optimization ensures a directed sound wave that reduces the scattering of unwanted frequencies. This results in a clearer, more focused sound image, which plays a crucial role, especially at high volumes and in acoustically challenging environments.

What are the advantages of the aluminum diaphragm in the SPL Show ST 25A Neo.2?

The SPL Show ST 25A Neo.2 by Hertz benefits from a high-quality aluminum diaphragm. This allows for extreme lightness while maintaining strength, resulting in excellent sound pressure. Aluminum has been chosen for its efficiency in sound reproduction with high stability, meaning you get thermal resistance that counteracts unwanted distortion at high levels. In addition to acoustic performance, the aluminum diaphragm also contributes to the overall durability of the tweeter, especially in outdoor applications due to the impregnation and anti-UV treatment of the housing.

What is the significance of the CCAR voice coil in the SPL Show ST 25A Neo.2?

The CCAR voice coil (Copper Clad Aluminium Ribbon) in the SPL Show ST 25A Neo.2 by Hertz is central to its thermal and mechanical performance. By using a copper coating on aluminum, the coil can handle high power loads while remaining lightweight, optimizing overall performance. This combination also allows for excellent heat dissipation, crucial for operation at high volumes over extended periods without the risk of thermal failure. The voice coil also offers flexibility, as it can be easily replaced with spare parts if needed.

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