Hertz DT 24.3 Dieci 24mm Peak 80W Car Tweeter

If your car audio system sounds like it's missing something in the highs — that sparkle on cymbals, the air around vocals, the detail in acoustic guitars — the answer is almost always the tweeter. The Hertz DT 24.3 is built specifically to fill that gap. At just 24mm and 20mm deep, it fits virtually anywhere: A-pillars, dash corners, door panels, or custom flush mounts. And with a neodymium magnet, a PEI membrane, and Hertz's annular acoustic lens, it delivers high-frequency performance that most tweeters at this price point simply can't match.

What is the Hertz DT 24.3?

The Hertz DT 24.3 is a 24mm (0.9-inch) dedicated car tweeter from Hertz's Dieci series. It uses a neodymium magnet and a PEI (polyetherimide) dome membrane, combined with an optimised annular acoustic lens that ensures linear, wide-dispersion high-frequency response. With 80W peak power handling at 4 Ohm and a frequency response of 3kHz to 23kHz, it's designed to work with component speaker systems or as a standalone tweeter upgrade. The supplied universal brackets support both surface mount and flush mount installation, making it one of the most versatile tweeters in its class.

Why Choose the Hertz DT 24.3?

• ✅ Neodymium magnet — stronger magnetic field in a smaller, lighter package than ferrite
• ✅ PEI membrane — high stiffness and heat resistance for accurate, fatigue-free highs
• ✅ Annular acoustic lens — optimised geometry for linear, wide-dispersion frequency response
• ✅ Universal mounting — supplied brackets support both surface mount and flush mount applications
• ✅ Extremely compact — 24mm diameter, 20mm depth, 0.03kg weight; fits virtually anywhere
• ✅ Wide frequency response from 3kHz to 23kHz — covers the full high-frequency range
• ✅ 80W peak power handling — handles high SPL levels without distortion
• ✅ 4 Ohm impedance — compatible with component crossovers, head units, and amplifiers
• ✅ Sold as a pair — both tweeters included in the box

Key Features

• Size: 24mm (0.9 in.) — compact enough to fit in A-pillars, dash corners, and door panels
• Mounting Depth: 20mm (0.8 in.) — shallow profile for tight installation locations
• Peak Power: 80W — rated at 3.5kHz with a 6dB/octave crossover slope
• Impedance: 4 Ohm — compatible with component crossovers and amplifiers
• Frequency Response: 3kHz – 23kHz — covers the full high-frequency range from upper midrange through ultra-high frequencies
• Magnet Type: Neodymium — rare-earth magnet for maximum efficiency in a minimal footprint
• Dome Material: PEI (Polyetherimide) — high stiffness and heat resistance for accurate, consistent highs
• Annular Acoustic Lens — optimised geometry for linear dispersion and extended frequency response
• Mounting Options: Surface mount and flush mount — universal brackets included in the box
• Weight per tweeter: 0.03 kg (0.07 lb.) — ultralight; no structural concerns for any mounting location

Advanced Technologies

Neodymium Magnet: The DT 24.3 uses a neodymium (rare-earth) magnet, which delivers a significantly stronger magnetic field than ferrite in a fraction of the size and weight. For a tweeter, this matters enormously — a stronger magnet means better control of the dome membrane, faster transient response, and higher efficiency. In practical terms, you get a tweeter that sounds more detailed and responsive, even at low listening volumes.

PEI (Polyetherimide) Membrane: The dome membrane is made from PEI, a high-performance engineering polymer selected specifically for its combination of high stiffness and heat resistance. A stiffer dome moves more accurately at high frequencies, reducing distortion and improving the precision of the sound. Heat resistance matters in a car environment where dashboard temperatures can reach extreme levels — PEI maintains its properties where cheaper materials would soften and degrade.

Annular Acoustic Lens: This is one of the DT 24.3's most distinctive engineering features. The annular acoustic lens is a precisely shaped waveguide built around the dome that controls how high-frequency sound disperses from the tweeter. Rather than projecting sound in a narrow beam — which is a common problem with small tweeters — the lens spreads it evenly across a wide angle. The result is a more consistent listening experience for every passenger in the car, not just the driver sitting directly in front of the tweeter.

Universal Mounting System: The DT 24.3 ships with brackets that support both surface mount (sitting proud of the panel surface) and flush mount (recessed into the panel) installation. This makes it genuinely universal — you can fit it in A-pillars, dash corners, door panels, or custom enclosures without needing additional hardware. The shallow 20mm depth means it works in locations where deeper tweeters simply won't fit.

Benefits

• 🎵 Adds the high-frequency detail that coaxial and factory speakers often miss
• 🔊 Handles high SPL levels cleanly — no harshness or distortion at volume
• 🌡️ PEI dome resists dashboard heat — stays accurate in Indian summer conditions
• ⚡ Ultralight at 0.03kg — no mounting location is too tight or too delicate
• 🔧 Surface and flush mount options included — fits any installation style
• 🎯 Annular lens ensures wide dispersion — every seat in the car benefits
• 📦 Sold as a pair — both tweeters included, ready to install

Who Should Buy the Hertz DT 24.3?

• Car audio enthusiasts building a component speaker system who need a high-quality tweeter
• Anyone whose current speakers lack high-frequency detail, air, or sparkle
• Drivers upgrading from coaxial speakers to a component setup for the first time
• Those who need a compact tweeter that fits in tight A-pillar or dash locations
• Installers looking for a versatile tweeter with both surface and flush mount options
• Anyone pairing the DT 24.3 with Hertz Dieci woofers for a matched Dieci component system
• Enthusiasts who want a trusted European audio brand's tweeter at an accessible price point

Technical Specifications

Why Choose Dolphin Accessories?

• ✅ 100% Genuine Products — every product is sourced directly from authorised distributors
• ✅ Expert Guidance — our team understands car audio and can help you find the right fit for your system
• ✅ Pan-India Delivery — we ship to all major cities and towns across India
• ✅ Secure Packaging — tweeters are packed carefully to arrive in perfect condition
• ✅ After-Sales Support — we're here to help after your purchase, not just before it
• ✅ Trusted by Enthusiasts — thousands of car audio upgrades delivered across India

Frequently Asked Questions

Q: What size is the Hertz DT 24.3 tweeter?
A: The DT 24.3 is a 24mm (0.9-inch) tweeter with a mounting depth of just 20mm. Its compact size makes it suitable for A-pillar pods, dash corners, door panels, and custom flush-mount locations.

Q: Does the Hertz DT 24.3 come with mounting brackets?
A: Yes. The DT 24.3 ships with universal brackets that support both surface mount (sitting on top of the panel) and flush mount (recessed into the panel) installation. No additional hardware is needed for most installations.

Q: What crossover frequency should I use with the Hertz DT 24.3?
A: The DT 24.3's power rating is specified at 3.5kHz with a 6dB/octave crossover slope. Its frequency response starts at 3kHz, so a crossover point between 3kHz and 4kHz is typical. If you're using it with a component crossover, follow the crossover manufacturer's recommended settings.

Q: Do I need a crossover to use the Hertz DT 24.3?
A: Yes, a crossover is required to protect the tweeter from low-frequency content that could damage it. If you're using the DT 24.3 as part of a component speaker system, the included crossover will handle this. If installing standalone, use an inline capacitor or passive crossover set to at least 3kHz.

Q: What is the impedance of the Hertz DT 24.3?
A: The impedance is 4 Ohm, compatible with component crossovers, amplifiers, and most aftermarket head units.

Q: What is the peak power handling of the DT 24.3?
A: The peak power handling is 80W, rated at 3.5kHz with a 6dB/octave crossover. In a properly crossed-over system, the tweeter will never see the full power of your amplifier — the crossover filters out the low frequencies before they reach it.

Q: What is a PEI dome tweeter?
A: PEI stands for polyetherimide, a high-performance engineering polymer used for the tweeter dome. It's chosen for its high stiffness — which improves accuracy at high frequencies — and its heat resistance, which keeps it performing consistently in hot car environments.

Q: What is the annular acoustic lens on the DT 24.3?
A: The annular acoustic lens is a precisely shaped waveguide built around the tweeter dome. It controls how high-frequency sound disperses from the tweeter, spreading it evenly across a wide angle rather than projecting it in a narrow beam. This means better high-frequency coverage for all passengers, not just the driver.

Q: Is the Hertz DT 24.3 suitable for Indian weather conditions?
A: Yes. The PEI dome is specifically selected for its heat resistance, making it well-suited to the high dashboard temperatures common in Indian summers. The neodymium magnet is also unaffected by humidity.

Q: Can I use the Hertz DT 24.3 with Hertz Dieci coaxial speakers?
A: The DT 24.3 is part of the Hertz Dieci series and is designed to complement Dieci woofers and coaxials. For a matched system, pair it with a Dieci woofer and a suitable crossover for a cohesive, balanced sound.

Q: How is the Hertz DT 24.3 sold — as a pair or single?
A: It is sold as a pair — you receive two tweeters in the box, enough for both left and right channels.

Q: Is this product genuine and covered by warranty?
A: Yes. Dolphin Accessories sells 100% genuine Hertz products sourced from authorised distributors. Warranty terms follow Hertz India's standard policy — contact us after purchase for warranty support.