Description
The Hertz ST25A NEO pair is designed for the high-frequency section of a correctly filtered SPL audio installation. Each driver uses a neodymium motor, an aluminium diaphragm and a 25 mm voice coil, with 4-ohm nominal impedance.
Specifications and protection
- Manufacturer-rated size: 44 mm (1.8 inches)
- 100 W peak per driver, with high-pass filtering at 5 kHz and 12 dB per octave
- Published frequency response: 3–20 kHz
- Sensitivity: 107 dB SPL
- Mounting depth: 29.7 mm; mounting opening: 43.5 mm
The published response is not a recommended crossover setting. Never connect these tweeters to an unfiltered full-range output. Suitable external crossover protection, amplifier matching and system tuning are required. The manufacturer’s “Active” designation means this driver-only version is intended for a separately filtered system; it does not contain a built-in amplifier.
What is supplied
One pair of ST25A NEO tweeter drivers. Passive crossover filters and the grille kit supplied with ST25K NEO are not included. This listing is for ST25A NEO, not ST25K NEO or the later ST25A NEO.2.
Installation and compatibility
Check mounting clearance, wiring, amplifier loading and crossover settings before ordering. This is a universal component, not a guaranteed direct-fit vehicle kit. Vehicle adapters, installation, fabrication and tuning are quoted separately.
Supply and fitting
Supply only. Contact for install price. Required wiring, adapters, mounting work and labour are quoted after assessing your vehicle. We fit equipment supplied by Lehane Autos; customer-supplied parts are not accepted. Collection requires confirmed stock and an appointment. Supplier availability is subject to confirmation.
Physical delivery is calculated at checkout.
UK price: £199.99 including VAT (£166.66 excluding VAT).
