Hertz Mille ML 280.3 Legend Tweeter

From these presuppositions the Hertz ML 280.3 Legend car audio speakers has been born. Through the FEA simulations, the electro-acoustic designers carried out an extensive research which led to the optimization of the Tetolon dome geometry, to minimize distortion.

This optimization method led to a reviewed face plate geometry for improved frequency response and lower distortion.

Another element of the tweeter especially important for sound is the rear acoustic chamber: the designers performed an exhaustive research on the geometry as well as on the employed damping material, achieving 50% increase in overall volume, to extend response to lower frequencies with 900Hz resonance frequency.

• 1. Neodymium magnet optimized with FEA simulations of the magnetic flux for utmost control and fast response to the transients.
• 2. Extremely pure copper short circuit ring, for excellent very high frequency extension.
• 3. Die-cast aluminium face plate with profile optimized with FEA simulations to improve frequency response and dispersion.
• 4. Tetolon Fiber dome optimized with FEA simulations for lower distortion and improved dispersion in high frequency range.
• 5. Frame structure and rear load chamber both derived from a CNC machined solid aluminium block, to ensure mechanically inert response to resonances.
• 6. Rear chamber sized for only 900 Hz Fs: low Fs ensures wide extension in low frequency range and low distortion also in the crossing section, allowing a decreased cut-off frequency.
• 7. High-density damping material underneath the dome, low-density absorbing material in the rear chamber, providing fluid acoustic emission and high damping in the low frequency response.

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