Hertz SPL Show ST 35K Neo 1.8 Inch Compression Driver Bullet Tweeter 120w Max

The Hertz SPL Show ST 35K Neo is a 1.8-inch (46 mm) compression driver bullet tweeter rated at 120W peak, 4 ohm, from the Hertz SPL Show NEO line. It uses a neodymium N38 H motor, aluminium diaphragm and a 35 mm CCAR voice coil, designed for high-output SPL car audio systems.

This listing is the Kit version, supplied with a metallic mesh grille and inline crossover filter. For use with an active crossover or DSP, see the ST 35A Neo (tweeter only).

Key specifications

• Type: high-efficiency compression driver bullet tweeter
• Size: 46 mm (1.8 inch)
• Power handling: 120W peak (high-pass filtered at 4 kHz, 12 dB/octave)
• Impedance: 4 ohm
• Frequency response: 2 kHz – 20 kHz
• Voice coil: 35 mm CCAR (copper clad aluminium ribbon)
• Diaphragm: aluminium with neodymium N38 H magnet
• Body: waterproof and anti-UV treated
• Version: Kit — includes metallic mesh grille and inline crossover filter

The NEO line bullet tweeters are a new design, lighter and more compact than the previous ST 35, with improved performance through the use of a neodymium N38 H motor and a FEM (Finite Element Method) optimised driver and horn layout.

Features

• Neodymium N38 H magnet for high output in a compact package.
• FEM-optimised phase-plug and loading horn for controlled dispersion.
• 35 mm CCAR (Copper Clad Aluminium Ribbon) voice coil for strong thermal and mechanical capability; compatible with a replacement body kit.
• Extra-light aluminium membrane maximises SPL output; screw terminals for secure wiring.
• Waterproof body with anti-UV treatment — safe for outdoor use without discolouration over time.
• Aluminium back cover for improved heat dissipation.
• Extended low-frequency reach and high efficiency for SPL applications.
• Kit version includes metallic mesh grille and inline crossover filter.