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Hertz SPL Show ST 25K Neo.2 Horn Tweeter
Hertz SPL Show ST 25K Neo.2 Horn Tweeter
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
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SPL Show ST 25K Neo.2 by Hertz
You are looking at the SPL Show ST 25K Neo.2, a groundbreaking horn tweeter from Hertz. This innovation from the NEO line impresses with its lightweight and compact design. Its unique performance is achieved through the use of Neodymium N38 H for the motor units and a driver/horn design optimized by FEM (Finite Element Method). A special highlight is the “Kit” version of the ST 25K Neo, which includes a metal grille and an inline crossover filter. Expert tips: This tweeter enables high performance in a compact size, thanks to a powerful neodymium magnet, FEM-optimized phase plug, and loaded horn. With waterproof and anti-UV treatment, it is also prepared for safe outdoor use.
Technical Data
- Size mm 44
- Power Handling - Peak W 100
- Power Handling - Peak Note High-pass filtering @ 5 kHz - 12 dB Oct.
- Impedance Ohm 4
- Voice Coil Ø 25 (1)
- Frequency Response Hz 3k - 20k
- Weight kg 0.39
- Magnet Neodymium
- Dome Aluminum
Electro-Acoustic Specifications
- D mm 35.5
- Re Ohm 2.9
- Fs Hz 3900
- Le mH 0.03
- Bl T*m 2.05
- Spl dB 107
Physical Specifications

- Powerful neodymium magnet for high performance in a compact size
- FEM (Finite Element Method) optimized phase plug and loaded horn
- CCAR voice coil (Copper Clad Aluminum Ribbon) for inaudible, thermal and mechanical capabilities, allowing easy replacement with a Reecone Kit
- Extra lightweight aluminum diaphragm to maximize sound pressure
- Waterproof and anti-UV treatment for safe outdoor use without discoloration over time
- “Kit” version includes metal grille and inline crossover filter
Frequently Asked Questions about SPL Show ST 25K Neo.2
What materials are used in the Hertz SPL Show ST 25K Neo.2?
What materials are used in the Hertz SPL Show ST 25K Neo.2?
How does the FEM-optimized phase plug affect the performance of the SPL Show ST 25K Neo.2?
How does the FEM-optimized phase plug affect the performance of the SPL Show ST 25K Neo.2?
What frequency ranges does the Hertz SPL Show ST 25K Neo.2 cover?
What frequency ranges does the Hertz SPL Show ST 25K Neo.2 cover?
How is the SPL Show ST 25K Neo.2 installed in a car?
How is the SPL Show ST 25K Neo.2 installed in a car?
What type of magnet is used in the SPL Show ST 25K Neo.2?
What type of magnet is used in the SPL Show ST 25K Neo.2?
What is the load capacity of the Hertz SPL Show ST 25K Neo.2 and how is high load handled?
What is the load capacity of the Hertz SPL Show ST 25K Neo.2 and how is high load handled?
What role does the anti-UV and waterproof coating play on the SPL Show ST 25K Neo.2?
What role does the anti-UV and waterproof coating play on the SPL Show ST 25K Neo.2?
Can the SPL Show ST 25K Neo.2 be compatible with various car audio systems?
Can the SPL Show ST 25K Neo.2 be compatible with various car audio systems?
How do the Thiele Small parameters affect the performance of the SPL Show ST 25K Neo.2?
How do the Thiele Small parameters affect the performance of the SPL Show ST 25K Neo.2?
What influence does the CCAR voice coil have on the performance of the SPL Show ST 25K Neo.2?
What influence does the CCAR voice coil have on the performance of the SPL Show ST 25K Neo.2?
Manufacturer information / responsible person
Manufacturer information / responsible person
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