Hertz Mille Pro MPK 1650.3 6.5" 16.5cm Car 2 Way Component Speaker 125w RMS Pair

The Hertz Mille Pro MPK 1650.3 is a 6.5" (165 mm) 2-way component speaker system from the Mille Pro range, rated at 125W RMS / 250W peak at 3 ohms. It comprises the MP 165P.3 mid-bass woofer, the MP 28.3 Tetolon dome tweeter (derived from the Mille Legend ML28.3), and the MPCX 165.3 crossover with Hi-Contour control.

The 3 ohm design is built to get the most from 2 ohm stable amplifiers. For a simpler set using the same woofer, see the MPK 165P.3; for a 5 inch system, see the MPK 130.3.

Key specifications

• Type: 6.5 inch (165 mm) 2-way component system
• Power handling: 125W RMS, 250W peak
• Impedance: 3 ohm
• Sensitivity: 91 dB SPL
• Frequency response: 45 Hz – 25 kHz
• Tweeter: MP 28.3, 35 mm Tetolon dome, 28 mm voice coil, Fs 900 Hz
• Woofer: MP 165P.3, 95 mm ferrite magnet, +/-4.5 mm linear excursion
• Crossover: MPCX 165.3, 3 kHz (Hi-Contour on) / 4 kHz (Hi-Contour off)
• Tweeter level adjustment: +2 / 0 / -2 dB

Extreme dynamics, unlimited power handling, realistic sound stage

The MPK 1650.3 is the top-of-range 2-way system in the Mille Pro line. It pairs the MP 28.3 tweeter (35 mm Tetolon dome, 28 mm voice coil) — inheriting the technology of the Mille Legend ML28.3 — with the MP 165P.3 woofer and MPCX 165.3 crossover.

The Tetolon dome geometry maximises off-axis dispersion. The rear acoustic chamber with damping material lowers the resonance frequency to 900 Hz, allowing a lower crossover point between tweeter and woofer for a better in-car sound image. The massive Neodymium motor handles highly dynamic transients with minimal nonlinearity.

MP 28.3 tweeter

• Double Neodymium magnet optimised with FEA simulations for maximum field symmetry and transfer efficiency.
• Tetolon Fiber dome optimised with FEA simulations for excellent dynamics and angle dispersion.
• Larger rear chamber reduces Fs to 900 Hz.
• Natural fibre non-woven sound-absorption material for better damping and more natural acoustic emission.

MP 165P.3 woofer

• 3 ohm nominal impedance to exploit full amplifier power.
• 14 mm height pure copper voice coil wound on a Polyamide former for exceptional power handling.
• 95 mm diameter ferrite magnet for maximum control over the full +/-4.5 mm excursion.
• Exponential V-cone® profile pressed-pulp cone with cotton fibres — stiff yet lightweight for wide frequency response.
• Cone profile geometrically optimised for linearity and dispersion in the mid-frequency range.
• "Boundary Free" rubber surround for improved efficiency and wider mid-bass frequency.
• Low mounting depth, acoustically transparent aluminium alloy basket with diamond cutting and aluminium Hertz logo.
• Full-protection metal mesh grille and mineral powder-coated inner grille included for flexible installation.

MPCX 165.3 crossover

• "Hi-Contour" two-position control selects the tweeter hi-pass crossover point (3 kHz on / 4 kHz off) to suit tweeter position and angle.
• Three terminals for tweeter level adjustment in 2 dB steps (+2 / 0 / -2 dB).
• Bi-metallised 160V polyester film capacitors with ultra-low DF for maximum sound transparency.
• Air-wound inductors built on pure copper wire up to 1 mm diameter for low losses on the woofer section.
• High-power wirewound resistors with low parasitic series inductance for stable performance at high operating temperatures.

The CCAW (Copper Clad Aluminium Wire) voice coil provides a lightweight, stiff moving assembly contributing to a high-frequency extension of 28 kHz. An angled tweeter support is included, allowing installation on A-pillars or the dashboard — correct tweeter angle improves stereo imaging.

The MP 165P.3 woofer's electroacoustic parameters are tuned for pure, solid mid-bass suited to high-dynamic systems. The 3 ohm impedance and 14 mm voice coil height maximise compatibility with Hertz HCP and HDP amplifiers and all 2 ohm stable electronics. The 95 mm ferrite magnet delivers +/-4.5 mm linear excursion for consistent control, while the V-cone® profile and Boundary Free Surround improve off-axis dispersion and move more air. The aluminium alloy basket neutralises unwanted vibrations.

The MPCX 165.3 crossover balances the MP 28.3 and MP 165P.3 with bi-metallic polyester capacitors, air-wound copper inductors and wirewound resistors. Hi-Contour control fine-tunes the frequency response to suit different speaker positions, while the three-position tweeter level control lets listeners dial in their preferred sound.