Hertz MP 70.3 PRO 3" Midrange Car Speaker

In a 3-way car audio system, the midrange speaker is the one doing the hardest work. Vocals, guitars, piano, the texture of a snare drum — all of it lives in the midrange band. The Hertz MP 70.3 PRO was built specifically to handle that responsibility. With a symmetrical dual neodymium magnet structure, a 20 mm CCAW voice coil, and the Exponential V-cone® profile, it delivers the kind of clear, detailed, and natural midrange that makes a 3-way system genuinely worth building. If you're running the MP 165P.3 woofer and the MP25.3 tweeter, this is the midrange driver that completes the picture.

What is this Product?

The Hertz MP 70.3 PRO is a 3" (70 mm) car audio midrange speaker from Hertz's MPX Pro series. It is designed to be used as the midrange driver in a 3-way component speaker system, covering the frequency range from 180 Hz to 18,000 Hz. It handles 100W peak power (when Hi-Pass filtered at 250 Hz, 12 dB/oct) at 4 Ohm impedance. The speaker uses a symmetrical dual neodymium magnet structure developed with FEM (Finite Element Modeling) simulation, a 20 mm CCAW double-layer voice coil on a Polyamide former, and Hertz's Exponential V-cone® pressed-pulp cone with cotton fibers. A full protection metal mesh grille and a mineral powder-coated inner grille are included.

Why Choose This Product?

• ✅ Symmetrical dual neodymium magnet structure — developed with FEM simulation for superior dynamics and control
• ✅ 20 mm CCAW double-layer voice coil for exceptional power handling and compression-free midrange reproduction
• ✅ Exponential V-cone® profile for wide, linear off-axis dispersion across the midrange band
• ✅ Boundary Free rubber surround extends low-frequency reach for a smoother blend with the woofer
• ✅ Removable anti-vibration rubber magnet cover — fits limited mounting depth installations
• ✅ Acoustically transparent diamond-cut aluminium alloy basket minimises back-pressure and resonance
• ✅ Two grille options included — metal mesh and mineral powder-coated inner grille for flexible installation
• ✅ Designed to pair directly with the Hertz MP 165P.3 woofer and MP25.3 tweeter for a complete MPX Pro 3-way system

Key Features

• Component Type: Midrange — designed for use as the mid driver in a 3-way component system
• Speaker Size: 70 mm (3") — standard 3" midrange mounting diameter
• Peak Power: 100W — rated with Hi-Pass filter at 250 Hz, 12 dB/oct
• Impedance: 4 Ohm — compatible with most aftermarket amplifiers
• Frequency Response: 180 Hz to 18,000 Hz — covers the full midrange and upper-midrange band
• Voice Coil Diameter: 20 mm (0.8") CCAW double-layer, Polyamide former with 8 decompression holes
• Magnet Type: Symmetrical dual neodymium — FEM-optimised for uniform magnetic field and low distortion
• Magnet Size (D × d × h): 19.7 × 0 × 2 mm (0.78 × 0 × 0.08")
• Cone Material: Pressed-pulp with cotton fibers — stiff yet lightweight for wide frequency response
• Cone Profile: Exponential V-cone® — geometrically optimised for linearity and dispersion in the mid-high range
• Surround: Boundary Free rubber — for better efficiency and wider low-frequency extension
• Basket: Acoustically transparent aluminium alloy with diamond-cut finish and Hertz logo
• Weight (per speaker): 0.17 kg (0.37 lbs)
• Grilles Included: Full protection metal mesh grille + mineral powder-coated inner grille
• Anti-Vibration Cover: Rubber magnet cover included, removable for shallow-depth installations

Advanced Technologies

Symmetrical Dual Neodymium Magnet Structure (FEM-Optimised): Most midrange speakers use a single magnet. The MP 70.3 PRO uses a symmetrical dual neodymium magnet structure — two neodymium magnets arranged symmetrically around the voice coil gap. Hertz developed this geometry using FEM (Finite Element Modeling) simulation, which allowed their engineers to model and optimise the magnetic field before building any physical prototype. The result is a more uniform, symmetrical magnetic field across the full range of voice coil travel, which translates directly to lower distortion and more accurate, dynamic midrange reproduction. Neodymium also delivers a much stronger magnetic field per unit of weight compared to ferrite, keeping the speaker compact and lightweight at just 0.17 kg.

20 mm CCAW Double-Layer Voice Coil on Polyamide Former with 8 Decompression Holes: CCAW (Copper-Clad Aluminium Wire) combines the electrical conductivity of copper with the light weight of aluminium, giving the voice coil a better power-to-weight ratio than a standard copper coil. The double-layer winding increases inductance and power handling. The Polyamide former is heat-resistant and dimensionally stable under sustained high-power use. The 8 decompression holes in the former allow air to escape freely as the coil moves, reducing back-pressure that would otherwise cause compression and distortion at higher volumes. Together, these details mean the MP 70.3 PRO can handle 100W peak without the midrange softening or compressing — even during demanding musical passages.

Exponential V-Cone® Profile with Pressed-Pulp Cotton-Fiber Cone: The V-cone® is Hertz's proprietary cone geometry, shaped to optimise both linearity (how accurately the cone moves in response to the signal) and off-axis dispersion (how evenly the sound spreads across the listening area). In a midrange speaker, off-axis dispersion is particularly important because the driver is often mounted in a location that isn't pointing directly at the listener. The pressed-pulp cotton-fiber material adds the right balance of stiffness and lightness — stiff enough to avoid unwanted resonances, light enough to respond quickly to fast transients like vocal consonants and plucked strings.

Boundary Free Rubber Surround: The surround controls how far the cone can travel and how smoothly it returns to rest. Hertz's Boundary Free design allows greater cone excursion than a conventional surround, which extends the speaker's low-frequency reach. For a 3" midrange, this is significant — it means the MP 70.3 PRO can blend more smoothly with the woofer below it, reducing the gap in the crossover region and giving the overall system a more seamless, coherent sound.

Removable Anti-Vibration Rubber Magnet Cover: The rubber cover over the magnet assembly serves two purposes. First, it damps spurious vibrations from the magnet structure that could colour the sound. Second, it is designed to be removed when the installation space is tight — reducing the overall mounting depth of the speaker so it can fit in locations where a standard midrange driver wouldn't. This makes the MP 70.3 PRO genuinely versatile across different car models and dashboard or door panel configurations.

Benefits

• 🎵 Vocals, guitars, and instruments reproduced with natural clarity and texture
• 🔊 Wide off-axis dispersion fills the cabin with sound, not just a narrow sweet spot
• ⚡ Compression-free reproduction at high volumes — the midrange stays clean when you push the system
• 🏎️ Seamless blend with the MP 165P.3 woofer and MP25.3 tweeter for a coherent 3-way system
• 🔧 Removable magnet cover for flexible installation in shallow-depth locations
• 💎 Two grilles included — choose the look that suits your installation
• 🎯 Lightweight at 0.17 kg — easy to mount in dashboards, A-pillars, or door panels

Who Should Buy This Product?

• Car audio enthusiasts building a 3-way component system with the Hertz MPX Pro series (MP 165P.3 woofer + MP 70.3 PRO midrange + MP25.3 tweeter)
• Anyone who wants to add a dedicated midrange driver to an existing 2-way system to improve vocal clarity and midrange detail
• Listeners who find that their current setup lacks presence and texture in the midrange band
• Installers who need a compact, lightweight midrange driver that can fit in tight dashboard or A-pillar locations
• Enthusiasts running a high-powered multi-channel amplifier who want a midrange driver that can keep up with 100W peak

Technical Specifications

Why Choose Dolphin Accessories?

• ✅ 100% Genuine Products — Every product is sourced directly from authorised Hertz distributors. No counterfeits, no grey-market imports, ever.
• ✅ Expert Guidance — Our team understands 3-way system design. We can help you match the MP 70.3 PRO to the right woofer, tweeter, crossover, and amplifier for your specific build.
• ✅ Pan-India Delivery — We ship to every part of India, with packaging designed to protect precision audio components throughout transit.
• ✅ Secure Packaging — Compact midrange drivers are delicate. Every order is packed carefully to arrive in perfect condition, regardless of the distance.
• ✅ After-Sales Support — Questions about crossover settings, mounting location, or system integration after your purchase? Our team is here to help.
• ✅ Trusted by Enthusiasts — From daily drivers to competition builds, thousands of car audio enthusiasts across India trust Dolphin Accessories for their upgrades.

Frequently Asked Questions

Q: What size is the Hertz MP 70.3 PRO?
A: It is a 3" (70 mm) midrange speaker. This is the standard size for dedicated car audio midrange drivers, designed to fit in dashboard pods, A-pillars, or door panel midrange locations.

Q: What is the power handling of the Hertz MP 70.3 PRO?
A: It handles 100W peak power when used with a Hi-Pass filter set at 250 Hz with a 12 dB/octave slope. Running it with the correct high-pass filter is important — without it, low frequencies can over-excite the small cone and cause damage.

Q: What frequency range does the MP 70.3 PRO cover?
A: It covers 180 Hz to 18,000 Hz, which spans the full midrange and upper-midrange band. In a 3-way system, it bridges the gap between the woofer below and the tweeter above.

Q: What is a symmetrical dual neodymium magnet and why does it matter?
A: Instead of a single magnet, the MP 70.3 PRO uses two neodymium magnets arranged symmetrically around the voice coil. This creates a more uniform magnetic field across the full range of cone travel, which reduces distortion and improves dynamic accuracy — especially noticeable on fast transients like vocals and acoustic instruments.

Q: What does CCAW voice coil mean?
A: CCAW stands for Copper-Clad Aluminium Wire. It combines the conductivity of copper with the light weight of aluminium, giving the voice coil a better power-to-weight ratio. This means faster response, better power handling, and less thermal compression compared to a standard aluminium coil.

Q: What are the 8 decompression holes in the voice coil former?
A: These holes allow air to escape freely as the voice coil moves, reducing back-pressure inside the former. Without them, trapped air creates a cushioning effect that limits cone movement and causes compression at higher volumes. The decompression holes keep the midrange clean and open even when the speaker is working hard.

Q: What is the Exponential V-cone® and how does it improve sound?
A: The V-cone® is Hertz's proprietary cone geometry, shaped to optimise both linearity and off-axis dispersion. In a midrange speaker, good off-axis dispersion is critical because the driver is rarely pointing directly at the listener. The V-cone® ensures the sound spreads evenly across the cabin rather than being focused in a narrow beam.

Q: Can I remove the anti-vibration rubber magnet cover?
A: Yes. The rubber magnet cover is designed to be removable. Removing it reduces the overall mounting depth of the speaker, making it easier to install in tight locations like dashboard pods or A-pillar mounts where space is limited.

Q: What speakers does the MP 70.3 PRO pair with in a 3-way system?
A: The MP 70.3 PRO is designed to work alongside the Hertz MP 165P.3 woofer (for the low frequencies) and the Hertz MP25.3 tweeter (for the high frequencies) as part of a complete Hertz MPX Pro 3-way system.

Q: Do I need a crossover for the Hertz MP 70.3 PRO?
A: Yes. The MP 70.3 PRO must be used with a high-pass filter set at 250 Hz (12 dB/oct) to protect it from low-frequency signals that could damage the small cone. This can be provided by a passive crossover or an active crossover in your amplifier or DSP processor.

Q: What grilles are included with the MP 70.3 PRO?
A: Two grilles are included: a full protection metal mesh grille and a mineral powder-coated inner grille. This gives you flexibility to choose the look that best suits your installation style.

Q: How do I buy the Hertz MP 70.3 PRO from Dolphin Accessories?
A: Add it to your cart and place your order online. We offer pan-India delivery with secure packaging. If you need help with system matching, crossover settings, or installation advice, our team is ready to assist before and after your purchase.