Hertz ST 25A NEO SPL Show 1" Aluminum Dome Bullet Tweeter (Pair)

44 (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.

Features:

1. Powerful Neodymium magnet providing high performance with compact size.

2. FEM (Finite Element Method) optimized phase-plug and loading horn.

3. CCAR (Copper Clad Aluminium Ribbon) voice coil for unheard-of thermal and mechanical capability ready for an easy replacement with replacement body kit.

4. Extra-light aluminium membrane to maximize SPL with high current, screw terminals.

5. Body waterproofing and anti-UV treatment to allow safe outdoor use without discoloration over time.

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    Aluminum

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