





Hertz Mille Pro MP 70.3 3" Inch 70mm Car Midrange Speakers Set 100w Peak Pair
Couldn't Load Pickup availability
The Hertz Mille Pro MP 70.3 is a pair of 70 mm (3-inch) midrange speakers rated at 100 W peak and 4 ohms, from Hertz's Mille Pro range. They are designed for use in 3-way component systems.
Key specifications
- Component: Midrange
- Size: 70 mm (3 in)
- Power handling: 100 W peak (hi-pass filtered @ 250 Hz, 12 dB/oct)
- Impedance: 4 ohms
- Frequency response: 180 – 18k Hz
- Voice coil: 20 mm CCAW double layer
- Magnet: Dual neodymium
- Cone: Pressed pulp with cotton fibres
- Weight per speaker: 0.17 kg
MP 70.3 PRO: 70 (3) mm (in.) mid-range, 100 W, 4 ohm
The MP 70.3 midrange speaker features a neodymium double magnet and delivers a detailed midrange. It is designed to pair with the MP 165P.3 woofer and the MP 25.3 tweeter in a 3-way component system.
- Symmetrical dual neodymium magnet structure developed with FEM (Finite Element Modelling) simulations, for superior dynamics and control.
- 20 mm CCAW double layer voice coil wound on a polyamide former with 8 decompression holes, for high power handling and compression-free reproduction.
- Exponential V-cone® profile pressed-pulp cone with cotton fibres, combining stiffness and light weight for a wide frequency response. Geometrically optimised for linearity and dispersion in the mid-high frequency range.
- "Boundary Free" rubber surround for better efficiency and wider mid-bass frequency response.
- Anti-vibration rubber magnet cover to damp spurious vibrations; removable for installations with limited mounting depth.
- Acoustically transparent aluminium alloy basket with diamond cutting and the aluminium Hertz logo.
- Full protection metal mesh grille with aluminium Hertz logo and mineral powder coated inner grille included, for several installation combinations.
The 20 mm coil maximises dynamics, the V-cone® profile enhances off-axis dispersion, and the Boundary Free surround allows wider extension towards the low frequency range.
Explore the full range in Hertz Mille Pro.
Specification
| Power Handling | - Peak W 100 |
|---|---|
| Power Handling | - Peak Note (Hi-Pass filtered @250Hz - 12 dB Oct.) |
| Impedance | Ohm 4 |
| Voice Coil | Ø 20 (0.8) |
| Frequency Response | Hz 180 ÷ 18k |
| Magnet | size D x d x h mm (in.) 19.7 x 0 x 2 (0.78 x 0 x 0.08) |
| Weight | of one speaker kg (lb.) 0.17 (0.37) |
| Magnet | Neodymium |
| Cone | Pressed-pulp cone with cotton fibers |
More specs
| |
What's Included
- Hertz MP 70.3 Mille Pro
- Grills
Hertz
About the Hertz MP 70.3
From our tech experts at CEN
The Hertz Mille Pro MP 70.3 is a pair of 70 mm (3 inch) midrange drivers, not coaxials. They are rated at 100 W peak when high-passed at 250 Hz (12 dB/oct), cover 180 Hz to 18 kHz at 4 ohms, and use a symmetrical dual neodymium magnet and a 20 mm CCAW voice coil.
Who it suits
Three-way Mille Pro builds, where Hertz pairs them with the MP 165P.3 woofer and MP 25.3 tweeter. They suit dash or pillar positions where a dedicated midrange fills the gap between woofer and tweeter.
Our tech experts advise
Run them active from a DSP with a high-pass of at least 250 Hz. Each weighs 0.17 kg, and grilles are included. Placement and time alignment decide how well a three-way images, so get in touch.
Explore the full Hertz range at CEN, with fast UK dispatch and expert advice from our Nottingham team. Shop all Hertz
Recommended For You
Discover more top-rated gear, handpicked to go with what you're viewing

Have it Fitted By Our Team
Our team fits car audio, stereos, dash cams and vehicle security at our workshop in Beeston, Nottingham. Tell us your vehicle and we'll confirm the parts and a fitted price.
- 1
Tell us your vehicle
Make, model and year, and what you'd like fitted.
- 2
We confirm the parts
Fascia, wiring and interfaces checked for your car, with a fitted price.
- 3
Fitted at our workshop
Bring it to our Beeston workshop and we do the rest.
Unit 25 Technology Drive, Beeston, Nottingham NG9 1LA
Hertz Car Audio Range
Hertz produces high-performance car audio systems driven by research.Music fans who attend live concerts know well the emotions that low undistorted frequencies without dynamic compression can arouse.
Frequently Asked Questions
Q: Will these speakers fit my car?
A: Most car speakers are standard sizes, but mounting depth and fitting rings vary by vehicle. Check the size in the Specification tab against your vehicle, or contact CEN with your registration and we will confirm fitment and any adapters or fitting kits you need.
Q: Do I need an amplifier to run these speakers?
A: Not always. Most speakers will run from a standard head unit, but a dedicated amplifier lets them perform at their best, particularly for component sets and higher power handling models. The RMS figure in the Specification tab is the guide to how much clean power they can use.
Q: What is the difference between coaxial and component speakers?
A: Coaxial speakers combine the tweeter and woofer in one unit for a simple like-for-like upgrade. Component sets separate the tweeter and woofer with a crossover for better imaging and detail, and suit installs where sound quality is the priority.
Q: Do these come as a pair?
A: Unless stated otherwise, car speakers are sold in pairs. Check the product title and What's Included tab, which lists exactly what is in the box.
Q: Can CEN fit these speakers for me?
A: Yes. CEN offers professional installation from our Nottingham premises. Contact us to book an installation slot or ask for a fitting quote.
Q: What is the Hertz MP 70.3 used for?
A: It is a 70 mm midrange speaker for 3-way component systems. Hertz designs it to pair with the Mille Pro MP 165P.3 woofer and MP 25.3 tweeter, covering 180 Hz to 18 kHz.
Q: What crossover point does the MP 70.3 need?
A: Its 100 W peak power rating is specified with a hi-pass filter at 250 Hz, 12 dB/octave, so it should be run from an active or passive crossover with a high-pass filter.
Q: Can the MP 70.3 fit where mounting depth is limited?
A: The anti-vibration rubber magnet cover can be removed to reduce the depth for installations with limited space. Contact CEN with your vehicle details to check fitment.
Not Sure Where to Start?
Straightforward advice and the latest news from our Nottingham team.
All Guides and News →
Car Audio
Helix Compose i5 Expands: FlexMount Speakers for Cars That Fight Back
Read more →
Car Audio
Pioneer Perfect Fit 9-Inch Stereos: Fitting Kits and Every Car They Fit (2026)
Read the guide →
Car Audio
BMW Speaker Upgrades Explained: Where to Start and What Fits
Read the guide →
Car Audio
Christmas Gift Guide 2026: Car Audio, Dash Cams and Outdoor Tech
Read the guide →
Car Audio
Upgrading Car Audio Without Replacing the Factory Stereo
Read the guide →
Car Audio
Amplifier Wiring Kits Explained: Gauge, Fuses and Earths
Read the guide →



































