Hertz ML 700.3 Review: The 3-Inch Mille Legend Midrange for Three-Way Systems
Updated: Oct 6
The Hertz ML 700.3 is a 3-inch (70 mm) Mille Legend midrange driver, sold without a crossover, for the middle band of a three-way front stage or a dash-mounted two-way. It uses a neodymium magnet and a 20 mm voice coil, quotes 90 dB sensitivity and a 200 Hz to 20 kHz response, and is rated at 100 W peak when high-passed at 250 Hz. Its Indian MRP is ₹49,990. It suits builders planning an active system with separate woofer, midrange and tweeter channels, who want the midrange to match Hertz's Legend woofers and tweeter. See today's price on our ML 700.3 product page.
Key takeaways
A bare 3-inch midrange: it needs a DSP channel of its own or a passive crossover, and it must be kept away from deep bass.
Hertz's power rating assumes a 250 Hz, 12 dB/octave high-pass, and linear excursion is only ±1.1 mm.
It is the matching midrange for an all-Legend three-way with the ML 1800.3 or ML 1650.3 woofer and the ML 280.3 tweeter.
Owner feedback is a single positive retailer review that calls it top-notch but very pricey.
Hertz ML 700.3 specifications
Specification | Hertz ML 700.3 |
|---|---|
Type | 3-inch (70 mm) midrange, sold without crossover |
Impedance | 4 Ω |
Power handling | 100 W peak (high-pass at 250 Hz, 12 dB/octave) |
Sensitivity | 90 dB |
Frequency response | 200 Hz – 20 kHz |
Voice coil | 20 mm, single-layer winding |
Magnet | Neodymium |
Cone | Pressed pulp with cotton fibres, V-cone profile |
Xmax | ±1.1 mm |
Fs / Qts / Vas | 110 Hz / 0.57 / 1.1 litres |
Moving mass | 2.7 g |
Weight | 0.21 kg |
Grille | Die-cast aluminium, included |
India MRP | ₹49,990 |
Figures come from Hertz's official ML 700.3 tech sheet. We could not confirm a mounting depth or cutout from the sheet's drawing, so measure your chosen location or ask us to check it.
What a dedicated midrange does
In a two-way set, a 6.5-inch woofer has to cover everything from bass to the upper midrange, and its cone becomes directional and less even as frequency rises. A three-way hands the vocal band to a small driver like the ML 700.3, which can sit higher in the car, often on the A-pillar or dash, close to the tweeter. Voices and instruments then appear at dashboard height rather than from your knees.
Hertz designed the ML 700.3 for that job. By Hertz's account, its 20 mm single-layer coil and pure-copper pole covering extend the treble, the cotton-fibre V-cone combines stiffness with low weight (2.7 g of moving mass), the CONEX spider's profile is optimised for transparent mid and high frequencies, and the Boundary Free butyl surround improves efficiency. The cone-to-former joint was shaped with FEA to help high-frequency extension, and the basket is a vented three-spoke aluminium design.
Setting it up: active or passive
Active is the natural fit. A DSP gives the midrange its own amplifier channel, filters and time alignment. Hertz's rating assumes at least a 250 Hz, 12 dB/octave high-pass, and with only ±1.1 mm of linear travel, higher is safer in practice. In its test of the ML 1800.3 (an article Hertz hosts), AudioReview suggested handing over from that woofer to a midrange between 700 Hz and 1 kHz. The upper crossover then goes to the ML 280.3 tweeter, which Hertz rates with a 1.8 kHz high-pass. A front three-way needs six channels; JL Audio's VX800/8i offers eight with built-in DSP. Hertz quotes only a peak rating, so set the midrange gain conservatively.
Passive means a separate network. Hertz pairs this driver with the ML 280.3 through its MLCX 2 TM.3 crossover in the MLK 700.3 kit, which a US retailer lists with a 4.5 kHz crossover and, in its feature text, the same five switches as the MLCX 2 TW.3. We do not list that kit or crossover online, so ask us. Our guide to the need for DSP in car audio explains what a processor adds to a multi-way system.
What owners and reviewers say about the Hertz ML 700.3
Feedback is thin. When we checked in October 2026, OnlineCarStereo had one customer review, dated March 2024. The buyer called them top-notch midrange speakers and recommended them to enthusiasts, while noting they are very pricey. That is a single opinion, not a consensus.
We found no magazine test of the ML 700.3. AudioReview's 2015 Mille Legend coverage, which Hertz hosts, mentions it but tests the woofers, tweeter and two-way kit, and the MLK 700.3 kit page we checked had no reviews. If you run a pair, we would like to hear how they sound in your car.
Hertz ML 700.3 vs Mille Pro MP 70.3
The cheaper 3-inch Hertz midrange we list is the Mille Pro MP 70.3 (₹29,990 MRP). Both are rated at 100 W peak with a 250 Hz high-pass and use 20 mm coils and cotton-fibre cones. The ML 700.3 is 2 dB more sensitive on paper (90 against 88 dB) and quotes a higher upper limit (20 kHz against 18 kHz), while the MP 70.3 reaches slightly lower (180 Hz against 200 Hz) and lists more linear excursion (1.5 mm against 1.1 mm). The extra ₹20,000 buys the Legend's construction and a family match with the ML woofers and ML 280.3, not more excursion.
Who should buy it, and who shouldn't
Buy the ML 700.3 if you are building an active three-way around Legend woofers and the ML 280.3, you have a DSP and enough amplifier channels, and you have a sensible location such as the A-pillars or dash.
Look elsewhere if you want a simple upgrade, since a component set such as the MLK 1650.3 is simpler to install and tune. The MP 70.3 costs less and is the natural match if you are building a Mille Pro three-way.
Installation notes for Indian cars
A 3-inch midrange is usually mounted in custom A-pillar pods or a dash location, aimed towards the listeners, with the tweeter close by so the two blend. Build pods rigidly and seal them, since a resonant pod colours the midrange. Check that nothing obstructs airbags in the pillar trim; an installer must route around them. Heat on a dashboard in a Delhi summer is severe, so use adhesives and pod materials rated for high temperatures. VA3 Car Studio offers professional installation in Ghaziabad.
Price and where to buy
The Hertz ML 700.3 carries an MRP of ₹49,990. VA3 Car Studio often sells below MRP, so check the current offer on the ML 700.3 product page. The listing includes the die-cast grilles; crossovers, tweeters and amplification are separate. Every unit we sell is a genuine Hertz product.
The bottom line
The ML 700.3 is a specialist part: a small, light 3-inch midrange that completes an all-Legend three-way. Its value depends entirely on the system around it, meaning a DSP, careful crossover points, rigid pods and patient tuning. Independent feedback is limited to one positive customer review that also calls the speakers very pricey. In the right build, a dedicated midrange lets vocals sit up at dashboard height.
Hertz ML 700.3 FAQ
Does the Hertz ML 700.3 need a crossover?
Yes. It is a bare midrange with no crossover included. Hertz rates it with a 250 Hz, 12 dB/octave high-pass, so run it from a DSP channel with proper filters, or through a passive network such as Hertz's MLCX 2 TM.3.
Where should the ML 700.3 be mounted?
Usually high up, in A-pillar pods or a dash location close to the tweeter and aimed towards the listeners. Rigid, sealed mounting matters more than the exact spot, and airbag clearance in the pillar must be kept.
What woofer and tweeter go with the ML 700.3?
Within Hertz's Legend range, the ML 1800.3 or ML 1650.3 woofer and the ML 280.3 tweeter. Hertz's MLK 700.3 kit pairs the ML 700.3 with the ML 280.3, and a three-way adds a Legend woofer in the doors.
Buy Hertz Speakers in India
You can buy the Hertz ML 700.3 Mille Legend 3 Inch Component Midrange online from VA3 Car Studio with pan-India shipping. See more Hertz speakers, compare other midrange and midbass speakers, or book a speaker upgrade in Ghaziabad.
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