Hertz ST 25K NEO SPL Show 1 3/4" Bullet Tweeter with Crossover and Grill (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 “Kit” version, ST 25K Neo features metallic mesh grille and inline crossover filter included. 

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.

6. “Kit” version with metallic mesh grille and inline crossover filter included.

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