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Hertz

Mille#ML 1800.3 LEGEND

Hertz Mille ML 1800.3 LEGENDCar Audio Woofers Has Been Thought And

5.03 reviewsSee all reviews

These midbass drivers deliver detailed, punchy low‑mid and woofer‑level performance when installed with solid damping and driven by a capable amplifier; they can require custom fitting and careful installation in many vehicles.

Buyer confidence

88%

Highlights

  • Neodymium magnet optimized with FEA simulations for real dynamics and utmost control.
  • Very low carbon content CNC machined plates, for maximum magnetic permeability and low distortion at high power levels.
  • Aluminium covered pole for a linear impedance modulation and low distortion.
  • 50 mm CCAW double layer voice coil wound on a Polyamide former for exceptional power handling and compression-free re production even in the most demanding musical passages.

Key specs

Full specs
Component
Woofer
Size mm (in.)
180 (7)
Power Handling - Continuous W
200
Power Handling - Peak W
400
Impedance Ohm
4
Voice Coil Ø
50 (2)
Frequency Response Hz
38 - 6k
Magnet size D x d x h mm (in.)
90 x 60,7 x 5 (3.54 x 2.39 x 0.2)

Key specs

Full specs
Component
Woofer
Size mm (in.)
180 (7)
Power Handling - Continuous W
200
Power Handling - Peak W
400

Highlights

Overview
  • Neodymium magnet optimized with FEA simulations for real dynamics and utmost control.
  • Very low carbon content CNC machined plates, for maximum magnetic permeability and low distortion at high power levels.
  • Aluminium covered pole for a linear impedance modulation and low distortion.

Review highlights

Based on customer reviews

Hertz ML 1800.3 LEGEND — powerful, detailed midbass

These midbass drivers deliver detailed, punchy low‑mid and woofer‑level performance when installed with solid damping and driven by a capable amplifier; they can require custom fitting and careful installation in many vehicles.

3 reviews5.0/5 averageUpdated Mar 15, 2026

What buyers praise

  • Very detailed, revealing low‑mid and bass response
  • Delivers strong woofer‑level punch when properly amplified

What to watch for

  • May need custom adapters or enclosures to fit some door locations
Overview
ML 1800.3 Legend car audio woofers has been thought and designed for the enthusiasts attending contests who need a component merging the timbre accuracy of ML 1650.3 Legend to a wider extension to the low frequencies thanks to the large emission surface, higher power handling and control which only a 50 mm voice coil can ensure. To get to these results, the R&D staff performed extensive in-car voicing sessions, after building several prototypes with the FEA simulation method and testing them with a wide array of measurements carried out with the Klippel® suite. Like in the suspensions of competition cars, the surround must stand the most extreme working conditions to ensure maximum stability and symmetry at high excursions, and so to achieve impact and extension to the low frequency range. For this reason, the electro-acoustic designers developed a new surround-basket gluing system called “Boundary Free Surround”. This technology, provides the ability to achieve wider emission surface of the cone compared to speakers with same diameter; that way, the cone manages to move a bigger mass of air, so it produces more acoustic pressure.
Highlights

Key features

  • Neodymium magnet optimized with FEA simulations for real dynamics and utmost control.
  • Very low carbon content CNC machined plates, for maximum magnetic permeability and low distortion at high power levels.
  • Aluminium covered pole for a linear impedance modulation and low distortion.
  • 50 mm CCAW double layer voice coil wound on a Polyamide former for exceptional power handling and compression-free re production even in the most demanding musical passages.
  • Exponential V-cone® with optimized geometry for utmost linearity and dispersion.
  • “Boundary Free” IIR rubber surround, for better efficiency and wider mid-bass frequency.
  • Pressed-pulp cone with cotton fibres, combining stiffness and lightweight, to achieve wide frequency response and limited break-ups at high frequency.
  • Three-spoke, very acoustically transparent anti-resonant aluminium alloy basket featuring built-in venting holes.
  • CNC machined elegant diamond-cut basket edge featuring the Hertz logo.
  • Die-cast aluminium factory provided grille featuring diamond-cut aluminium Hertz logo.
  • V-CONE®
  • Boundary Free Surround
Technologies
V-CONE®

V-CONE®

he exponential profile gets very close to the perfect one, providing exceptional dispersion.

Boundary Free Surround

Boundary Free Surround

This technology provides the ability to achieve wider emission surface of the cone compared to speakers with same

Specs

Technical Specs

12
ComponentWoofer
Size mm (in.)180 (7)
Power Handling - Continuous W200
Power Handling - Peak W400
Impedance Ohm4
Voice Coil Ø50 (2)
Frequency Response Hz38 - 6k
Magnet size D x d x h mm (in.)90 x 60,7 x 5 (3.54 x 2.39 x 0.2)
Weight of one speaker kg (lb.)1,71 (3.77)
MagnetNeodymium
ConePressed-pulp cone with cotton fibres
Xmech mm (in.)±10 (0.4)

Electro-acoustic Specs

12
D mm149
Re Ohm3,2
Fs Hz60
Le mH0,35
Vas I12,2
Mms g27,5
Cms mm/N0,3
BL T*m7,8
Qts0,5
Qes0,53
Qms7,22
Spl dB93

Physical Specs

6
ML 1800.3 LEGEND
A184 mm | 7.24 in.
B160 mm | 6.3 in.
C88 mm | 3.46 in.
D76 mm | 3 in.
E189,2 mm | 7.45 in.
F27 mm | 1.06 in.

Frequency response

ML 1800.3 LEGEND

Visual spec reference.

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Awards / Press

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Signori il Woofer 1970-01-01

Accessories
Grille

Grille

Die-cast aluminium factory provided grille featuring diamond-cut aluminium Hertz logo.