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  5. SPL Show ST 25K Neo.2
Hertz SPL Show ST 25K Neo.2 Horn Tweeter
SKU:  ST-25K-NEO.2
EAN:  8018823137201

2 Reviews

60 Watt

SPL Show ST 25K Neo.2

SKU:  ST-25K-NEO.2
EAN:  8018823137201

2 Reviews

Technical Highlights

  • Compact design, neodymium N38 H magnet, 4 ohm impedance.
  • FEM-optimized phase plug, loaded horn, aluminum membrane.
  • 100 W peak power, 3k-20k Hz frequency response, 107 dB SPL.
  • More technical details
€189,00
€189,00 €189,00
5% discount with credit card
inkl. VAT , possibly plus shipping
Delivery
Jun 6, - Jun 9,
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SPL Show ST 25K Neo.2 by Hertz

The Hertz SPL Show ST 25K Neo.2 is a Horn Tweeter with Neodymium N38 H in the motor unit, FEM-optimized phase plug, and loaded horn. Size 44 mm, impedance 4 Ohm, and power handling 100 W Peak with high-pass filtering at 5 kHz with 12 dB/Oct. The voice coil with a diameter of 25 mm uses CCAR technology, and the dome is made of aluminum. The frequency response ranges from 3000 to 20000 Hz, the sensitivity level is 107 dB, the resonance frequency is 3900 Hz; Re is 2.9 Ohm, Le 0.03 mH, and Bl 2.05 T*m. The weight is 0.39 kg. The kit version includes a metal grille and an inline crossover filter. Waterproofing and anti-UV treatment are included. Physical dimensions: A 57 mm, B 43.5 mm, C 55.5 mm, D 29.7 mm.

Features
  • Horn Tweeter
  • Neodymium Magnet N38 H
  • FEM-optimized phase plug
  • Loaded horn
  • CCAR voice coil
  • Aluminum dome
  • Waterproofing and anti-UV treatment
  • Kit version including metal grille and inline crossover filter
  • Size 44 mm
  • Impedance 4 Ohm
  • Voice coil Ø 25 mm
  • Power handling Peak 100 W
  • High-pass filtering 5 kHz, 12 dB/Oct.
  • Weight 0.39 kg
Technical Specifications
  • Frequency response 3000–20000 Hz
  • Re 2.9 Ohm
  • Fs 3900 Hz
  • Le 0.03 mH
  • Bl 2.05 T*m
  • Sensitivity 107 dB
  • D 35.5 mm
  • Dimensions A 57 mm, B 43.5 mm, C 55.5 mm, D 29.7 mm

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

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

The Hertz SPL Show ST 25K Neo.2 uses high-quality materials for optimal performance and durability. The diaphragm is made of aluminum, which is lightweight yet sturdy, ensuring maximum sound pressure. The Neodymium N38 H magnet, known for its strong magnetic performance at minimal weight, drives the FEM-optimized tweeter. This combination of materials and design allows for high acoustic efficiency, while the metal grille provides additional protection. Additionally, there is a special waterproof and anti-UV treatment that protects the tweeter from discoloration and weather effects.

How does the FEM-optimized phase plug affect the performance of the SPL Show ST 25K Neo.2?

The FEM-optimized phase plug of the SPL Show ST 25K Neo.2 plays a central role in its sound performance. The computer-aided design using Finite Element Method ensures optimal sound distribution, leading to a more uniform frequency response and more precise sound transmission. This optimization allows the tweeter to operate efficiently across its entire operating range of 3kHz to 20kHz, ensuring high sound accuracy even at high volumes. The phase plug designed in this way significantly contributes to the extraordinary acoustic clarity of the SPL Show ST 25K Neo.2.

What frequency ranges does the Hertz SPL Show ST 25K Neo.2 cover?

The Hertz SPL Show ST 25K Neo.2 is designed to cover a wide spectrum of high frequencies. With an operating range of 3kHz to 20kHz, it offers excellent performance for reproducing high frequencies, which is important for the precision and clarity of the crucial upper sound ranges in audio playback. This wide frequency range is particularly beneficial for users who value crystal-clear highs. Thanks to the neodymium motor and specialized horn structure, the tweeter can reproduce these frequencies evenly and efficiently, resulting in improved sound quality.

How is the SPL Show ST 25K Neo.2 installed in a car?

The installation of the SPL Show ST 25K Neo.2 in a vehicle is quite simple due to its compact dimensions of A: 57 mm, B: 43.5 mm, C: 55.5 mm, and D: 29.7 mm. These dimensions allow for a flexible installation position, ideally choosing a spot in the surface area with good sound propagation and visibility. Inline crossover filtering is supported, ensuring that the tweeter sounds its best within its optimal frequency range. It is important to position and connect the tweeter so that its full power can be utilized without interference.

What type of magnet is used in the SPL Show ST 25K Neo.2?

The SPL Show ST 25K Neo.2 from Hertz uses a Neodymium N38 H magnet, known for its exceptional strength and efficiency. This type of magnet is particularly powerful, as it delivers significantly more magnetic energy than conventional ferrite magnets of the same size. This allows for a compact design while maintaining outstanding acoustic performance. The Neodymium magnet also contributes to the weight reduction of the tweeter, positively affecting installation and sound quality. This choice of magnet material achieves a high level of dynamics and precision.

What is the load capacity of the Hertz SPL Show ST 25K Neo.2 and how is high load handled?

The SPL Show ST 25K Neo.2 from Hertz has a load capacity of 100 Watts Peak, with a recommended high-pass filtering at 5 kHz - 12 dB per octave. This design ensures that only appropriate frequencies reach the tweeter, preventing distortion and damage. This is supported by the CCAR voice coil, which provides thermal and mechanical load capacity, significantly reducing the risk of overheating. This combination ensures that the ST 25K Neo.2 can be operated reliably at high volumes without loss of sound quality.

What role does the anti-UV and waterproof coating play on the SPL Show ST 25K Neo.2?

The anti-UV and waterproof coating of the SPL Show ST 25K Neo.2 is crucial for its suitability for outdoor use. This protective layer not only prevents water ingress but also damage from UV radiation, which can lead to fading or material fatigue. Especially for installations in open vehicles or outdoor applications, protection against weather influences is essential. These treatments ensure the longevity of the tweeter and the reliability of its performance, regardless of environmental conditions.

Can the SPL Show ST 25K Neo.2 be compatible with various car audio systems?

The SPL Show ST 25K Neo.2 offers universal compatibility for many car audio systems due to its impedance of 4 ohms and compact design. Although no specific car brands are mentioned in the description, the provided flexibility allows it to harmonize with a variety of different systems, especially when precise tuning of the crossovers is performed. This makes it particularly valued by tuning professionals who aim for acoustic optimization of their vehicle speakers to achieve the highest sound precision and performance.

How do the Thiele Small parameters affect the performance of the SPL Show ST 25K Neo.2?

The Thiele-Small parameters of the SPL Show ST 25K Neo.2, including Re: 2.9 ohms, Fs: 3900 Hz, Le: 0.03 mH, and Bl: 2.05 T*m, provide insights into the electrical and mechanical performance of the tweeter. Re represents the DC resistance, affecting power loss due to heating and power efficiency, while Fs indicates the resonance frequency, which is crucial for the design of the enclosure volume. Le measures the voice coil inductance, important for high-frequency adjustments, while Bl describes the drive of the speaker cone, essential for movement accuracy. Together, they significantly determine the sound characteristics.

What influence does the CCAR voice coil have on the performance of the SPL Show ST 25K Neo.2?

The CCAR voice coil in the SPL Show ST 25K Neo.2 plays a central role in safely handling high power levels. Thanks to its special design made of copper-wound aluminum strips, it achieves excellent thermal conductivity and mechanical stability. This unique construction allows it to handle high power levels without overheating the moving parts, while also providing high power recovery. Additionally, the CCAR voice coil improves the reliability of the digital signal at high volumes, which is crucial for distortion-free audio playback for music lovers at high volumes.

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