Hertz,ST 25A NEO
ST 25A NEO44 (1.8) mm (in.) | High Efficiency Compression Driver | 100 W | 4 Ohm
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 “Active” version, ST 25A Neo provides tweeter only.
| 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 |
| 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
