Hertz
Hertz SPL Show ST 25K NEOFeatures Metallic Mesh Grille And Inline Crossover Filter Included
NEO line bullet tweeters are a totally new project, lighter and more compact compared to the previous ST 25 and with superior performance thanks to the use of Neodymium N38 H for the motor units and a FEM (Finite Element Method) optimized driver/horn design.
Highlights
- Powerful Neodymium magnet providing high performance with compact size.
- FEM (Finite Element Method) optimized phase-plug and loading horn.
- CCAR (Copper Clad Aluminium Ribbon) voice coil for unheard-of thermal and mechanical capability ready for an easy replacement with replacement body kit.
- Extra-light aluminium membrane to maximize SPL with high current, screw terminals.
Key specs
Full specs- Component
- HIGH EFFICIENCY COMPRESSION DRIVER
- Size mm (in.)
- 44 (1.8)
- Power Handling - Peak W
- 100
- Power Handling - Peak Note
- Hi-pass filtered @ 5 kHz - 12 dB Oct.
- Impedance Ohm
- 4
- Voice Coil Ø
- 25 (1)
- Frequency Response Hz
- 3k ÷ 20k
- Weight of one component kg (lb.)
- 0,39 (0.86)
Key specs
Full specs- Component
- HIGH EFFICIENCY COMPRESSION DRIVER
- Size mm (in.)
- 44 (1.8)
- Power Handling - Peak W
- 100
- Power Handling - Peak Note
- Hi-pass filtered @ 5 kHz - 12 dB Oct.
Highlights
Overview- Powerful Neodymium magnet providing high performance with compact size.
- FEM (Finite Element Method) optimized phase-plug and loading horn.
- CCAR (Copper Clad Aluminium Ribbon) voice coil for unheard-of thermal and mechanical capability ready for an easy replacement with replacement body kit.
Overview
NEO line bullet tweeters are a totally new project, lighter and more compact compared to the previous ST 25 and with superior performance thanks to the use of Neodymium N38 H for the motor units and a FEM (Finite Element Method) optimized driver/horn design. The “Kit” version, ST 25K Neo features metallic mesh grille and inline crossover filter included.
Key features
- Powerful Neodymium magnet providing high performance with compact size.
- FEM (Finite Element Method) optimized phase-plug and loading horn.
- CCAR (Copper Clad Aluminium Ribbon) voice coil for unheard-of thermal and mechanical capability ready for an easy replacement with replacement body kit.
- Extra-light aluminium membrane to maximize SPL with high current, screw terminals.
- Body waterproofing and anti-UV treatment to allow safe outdoor use without discoloration over time.
- “Kit” version with metallic mesh grille and inline crossover filter included.
- NATURE PROOF
Technologies
NATURE PROOF
Compact and lightweight, the new spl neo systems are extremely loud and do not fear nature elements for an
Specs
Technical Specs
| Component | HIGH EFFICIENCY COMPRESSION DRIVER |
| Size mm (in.) | 44 (1.8) |
| Power Handling - Peak W | 100 |
| Power Handling - Peak Note | Hi-pass filtered @ 5 kHz - 12 dB Oct. |
| Impedance Ohm | 4 |
| Voice Coil Ø | 25 (1) |
| Frequency Response Hz | 3k ÷ 20k |
| Weight of one component kg (lb.) | 0,39 (0.86) |
| Magnet | Neodymium |
| Dome | Aluminium |
Electro-acoustic Specs
| D mm | 35,5 |
| Re Ohm | 2,9 |
| Fs Hz | 3900 |
| Le mH | 0,03 |
| BL T*m | 2,05 |
| Spl dB | 107 |
Physical Specs

| A | 57 mm | 2.24 in. |
| B | 43,5 mm | 1.7 in. |
| C | 55,5 mm | 2.19 in. |
| D | 29,7 mm | 1.17 in. |
Frequency response

Visual spec reference.
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