Hertz Legend ML 1650 (Woofer)

During these past few years the Mille line car audio woofers have been the choice of many enthusiasts looking for extreme performance; with ML 1650.3 Legend the Hertz designers increased again the limits of achievable performance for components designed for door installation. 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. To ensure extraordinary power handling and very high thermal stability even with tracks especially rich of bass frequencies, ML 1650.3 Legend features a 36 mm mobile voice coil. This size ensures the best compromise between power handling and high frequency response.  The cone geometry has been subject of in-depth studies with FEA simulations and measurements performed with the Klippel Scan Vibrometer; all that led to the optimization of the V-cone® profile. In the subwoofers and in the woofers, to reproduce the lowest frequency spectrum, the cone needs to move a remarkable amount of air, so it is forced to make long excursions moving like a piston does. The V-cone® profile prevents the cone from deforming during its course, ensuring that the “piston” works in a correct position, maximizing the production of acoustic pressure.

 

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Data table

Size mm (in.)165 (6.5)
Power Handling – Peak W250
Power Handling – ContinuousW125
Impedance Ω4
Frequency response Hz40 – 6.5k
Sensitivity dB SPL93
Voice coil Ø mm (in.)36 (1.4)
MagnetNeodymium
Cone/DomePressed-pulp cone with cotton fibres

Technologies

  • V-CONE®

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

  • 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. This special surround is built from highly pure IIR butyl rubber, ensuring extraordinary thermal and mechanical linearity.