Hertz DCX 100.3 2-Way Coaxial 4"Peak 60W Car Speaker  

The 4-inch speaker position is one of the most common in Indian cars — and one of the most underserved by factory audio. The Hertz DCX 100.3 is built specifically to change that. It brings genuine Hertz engineering to a compact 4-inch format: a neodymium tweeter, a PEI dome, a built-in crossover, and a TPU surround — all in a unit that drops straight into your existing speaker location. If you want noticeably better sound without touching your car's wiring or adding extra components, this is the speaker to fit.

What is the Hertz DCX 100.3?

The Hertz DCX 100.3 is a 4-inch (100mm) 2-way coaxial car speaker from Hertz's Dieci series. It combines a woofer with a neodymium-backed PEI dome tweeter and a built-in crossover, all in a single unit designed for standard 100mm speaker positions. With 60W peak power handling, 30W RMS, and 4 Ohm impedance, it works with factory head units and aftermarket systems. The built-in crossover means no external crossover components are needed — the speaker handles frequency splitting internally for a cleaner, more accurate sound.

Why Choose the Hertz DCX 100.3?

• ✅ Built-in crossover — no external crossover needed, cleaner installation and more accurate frequency splitting
• ✅ Neodymium tweeter magnet — stronger magnetic field in a smaller package than ferrite
• ✅ Exclusive PEI dome tweeter — smooth, fatigue-free high frequencies
• ✅ TPU surround — durable, heat-resistant, maintains consistent bass response over time
• ✅ Water-repellent paper cone — handles moisture and humidity without degrading
• ✅ Wide frequency response from 70Hz to 21kHz — strong mids and crisp highs
• ✅ 4 Ohm impedance — compatible with factory and aftermarket head units
• ✅ Sold as a pair — both speakers included in the box

Key Features

• Size: 4 inch (100mm) — fits standard 100mm speaker cutouts in doors, dash, and rear positions
• Peak Power: 60W — handles energetic listening without distortion
• Continuous (RMS) Power: 30W — the real-world sustained output rating
• Impedance: 4 Ohm — compatible with virtually all head units and amplifiers
• Frequency Response: 70Hz – 21kHz — covers bass-adjacent mids through crisp treble; pair with a subwoofer for full-range sound
• Built-in Crossover — handles frequency splitting internally; no external crossover components required
• Woofer Magnet: 70 x 32 x 10mm — high-density ferrite for controlled, accurate bass
• Tweeter Magnet: Neodymium — rare-earth magnet for a stronger field in a compact size
• Cone Material: Water-repellent pressed paper — resists moisture without sacrificing natural sound character
• Dome Material: PEI — Hertz's exclusive polyetherimide dome for smooth, accurate highs
• Surround Material: TPU (Thermoplastic Polyurethane) — long-lasting, heat-resistant, consistent bass response
• Weight per speaker: 0.45 kg (0.99 lb.)

Advanced Technologies

Built-in Crossover: Most coaxial speakers rely on a simple passive filter to split frequencies between the woofer and tweeter. The DCX 100.3 takes this further with a properly designed built-in crossover that handles frequency division more accurately. This means the tweeter only receives the high-frequency content it's designed for, and the woofer handles the rest — reducing distortion and improving overall clarity without any additional components or wiring on your end.

Neodymium Tweeter Magnet: The DCX 100.3's tweeter uses a neodymium (rare-earth) magnet rather than the ferrite magnets found in most budget coaxials. Neodymium delivers a significantly stronger magnetic field from a much smaller magnet, which is critical in a compact 4-inch speaker where every millimetre of space matters. The result is a tweeter that performs with real authority despite the speaker's modest overall size.

PEI Dome Tweeter: Hertz's polyetherimide (PEI) dome is a signature feature across the Dieci series. PEI reproduces high frequencies with a smooth, natural character — no harshness, no listening fatigue. Paired with the neodymium magnet, it gives the DCX 100.3 a high-frequency performance that's genuinely impressive for a 4-inch coaxial.

TPU (Thermoplastic Polyurethane) Surround: The TPU surround is one of the most durable materials used in car speaker construction. Unlike foam surrounds that degrade in heat and humidity, TPU maintains its elasticity across the temperature extremes common in Indian conditions. The result is bass that stays tight and consistent over years of use, even through summer heat and monsoon humidity.

Water-Repellent Paper Cone: The woofer cone is treated with a water-repellent coating that protects it from moisture, condensation, and humidity — all real concerns in a car environment. This treatment extends the speaker's lifespan and keeps the sound consistent regardless of the weather outside.

Benefits

• 🎵 Immediately better sound than factory 4-inch speakers — more clarity, more depth
• 🔊 Built-in crossover means cleaner sound right out of the box — no extra components needed
• 🌡️ Built for Indian climate — TPU surround and water-repellent cone handle heat and humidity
• ⚡ Works without an amplifier — plug straight into your head unit
• 🔧 Simple installation — fits standard 4-inch cutouts, no modifications needed
• 🎯 Neodymium tweeter delivers crisp, detailed highs even at low volume
• 📦 Sold as a pair — both positions covered in one purchase

Who Should Buy the Hertz DCX 100.3?

• Car owners with 4-inch (100mm) speaker positions looking for a genuine, noticeable upgrade
• Anyone replacing thin, lifeless factory speakers in doors, dash, or rear positions
• Drivers who want better sound without adding an external crossover or amplifier
• Those building a multi-speaker system where the DCX 100.3 handles door or fill positions
• Enthusiasts who want a trusted European audio brand in a compact, easy-to-install format
• Anyone running a factory head unit who wants more clarity and detail from their audio

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 vehicle
• ✅ Pan-India Delivery — we ship to all major cities and towns across India
• ✅ Secure Packaging — speakers 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 DCX 100.3?
A: The DCX 100.3 is a 4-inch (100mm) speaker. It fits standard 100mm speaker cutouts commonly found in front doors, rear doors, and dash positions in many cars, hatchbacks, and SUVs.

Q: Does the Hertz DCX 100.3 have a built-in crossover?
A: Yes. The DCX 100.3 includes a built-in crossover that handles frequency splitting between the woofer and tweeter internally. You don't need to buy or install a separate crossover unit.

Q: Do I need an amplifier to run the Hertz DCX 100.3?
A: No. At 4 Ohm impedance, these speakers work directly with factory and aftermarket head units. An amplifier will improve performance further, but it's not required to enjoy a significant upgrade over factory speakers.

Q: What is the RMS power of the DCX 100.3?
A: The continuous (RMS) power handling is 30W per speaker. The 60W figure is the peak rating. For best results, match your amplifier's RMS output to the speaker's RMS rating.

Q: Is the Hertz DCX 100.3 sold as a pair or a single speaker?
A: It is sold as a pair — you receive two speakers in the box.

Q: What is the frequency response of the DCX 100.3?
A: The frequency response is 70Hz to 21,000Hz. This speaker handles midrange and high frequencies well. For deep bass below 70Hz, pair it with a subwoofer in your system.

Q: Why does the DCX 100.3 use a neodymium tweeter magnet?
A: Neodymium is a rare-earth magnet material that delivers a much stronger magnetic field than ferrite in a smaller size. In a compact 4-inch speaker, this allows the tweeter to perform with real authority without adding bulk to the overall unit.

Q: What is a PEI dome tweeter?
A: PEI stands for polyetherimide, a high-performance polymer that Hertz uses for its tweeter domes across the Dieci series. It reproduces high frequencies smoothly and naturally, without the harshness that cheaper dome materials can introduce.

Q: Is the Hertz DCX 100.3 suitable for Indian weather conditions?
A: Yes. The TPU surround and water-repellent paper cone are designed to handle heat, humidity, and moisture — all common challenges across India's varied climate, including monsoon season.

Q: What is the impedance of the Hertz DCX 100.3?
A: The impedance is 4 Ohm, the standard for car audio, compatible with virtually all head units and amplifiers.

Q: How does the DCX 100.3 compare to factory 4-inch speakers?
A: Factory 4-inch speakers are typically built to a cost target with basic magnets, no proper crossover, and cheap dome materials. The DCX 100.3 uses a ferrite woofer magnet, neodymium tweeter, PEI dome, built-in crossover, and TPU surround. The improvement in clarity, detail, and bass consistency is immediately noticeable.

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.