Hertz Mille Pro MPX 690.3 6x9" 3-Way Coaxial Speakers, 130W RMS, 4Ω, Pair

Hertz Mille Pro MPX 690.3 is a high-output 6×9-inch three-way coaxial speaker engineered for rear deck and high-dynamic full-range applications.

The system combines a large-format midbass driver, Tetolon dome tweeter, and dedicated supertweeter to deliver extended bandwidth, strong impact, and controlled dispersion in demanding listening environments.

Key Performance Features

• Three-way coaxial architecture optimized for rear deck installations
• Large-format woofer with extended excursion for powerful midbass output
• 28 mm Tetolon dome tweeter with Neodymium motor for wide dispersion
• Dedicated supertweeter for enhanced ultra-high-frequency extension
• Radial basket venting for reduced thermal buildup during high-output operation

System Architecture

• Driver Type: 3-way coaxial
• Intended System Role: Full-range rear fill or main speaker
• Nominal Impedance: 4 Ω
• Crossover: Integrated passive crossover network

Power Handling / Output

• Continuous (RMS): 130 W
• Peak: 260 W

Driver / Construction

• Woofer Voice Coil Diameter: 38 mm (1.5 in)
• Tweeter Voice Coil Diameter: 28 mm (1.1 in)
• Woofer Cone: Pressed-pulp cone with cotton fibers
• Woofer Magnet: High density flux ferrite
• Tweeter Magnet: Neodymium
• Tweeter Dome: Tetolon
• Woofer Magnet Size (D × d × h): 107 × 45 × 20 mm (4.21 × 1.77 × 0.79 in)
• Xmech: ±8 mm (0.31 in)

Installation Use Cases

• Rear deck installations requiring high SPL and full-range coverage
• High-dynamic daily-driver systems without separate rear components
• Systems demanding strong midbass impact and extended high-frequency detail

Technical Specifications

• Brand: Hertz
• Series: Mille Pro
• Model: MPX 690.3
• Component Type: 3-Way Coaxial
• Size: 6 × 9 in
• Impedance: 4 Ω (Re: 3 Ω)
• Sensitivity: 94 dB SPL
• Frequency Response: 30 Hz – 24 kHz
• Power Handling (RMS): 130 W
• Power Handling (Peak): 260 W
• Fs: 50 Hz
• Le: 0.07 mH
• Vas: 24 l
• Mms: 30 g
• BL: 7.2 T·m
• Qts: 0.43
• Weight (one speaker): 2.28 kg (5.03 lb)

Identifiers & Packaging

• Manufacturer Part Number (MPN): MPX 690.3
• Sold As: Pair (2 coaxial speakers)
• UPC: 8018823114332

Why Buy From MCOR Automotive

• Authorized retailer for Hertz Mille Pro products
• Expert support for system design and amplifier matching
• Specialists in high-output and sound-quality vehicle audio systems

Physical Specs

A	241 mm	9.49 in.
B	223 mm	8.74 in.
C	108 mm	4.25 in.
D	90 mm	3.54 in.
E	267 mm	10.53 in.
F	38,5 mm	1.52 in.

Frequency response

Fitment, Installation & Warranty Notes

• Fitment Help: Need help confirming fitment, compatibility, amplifier matching, or installation parts? Use our Fit Guide or contact us through the chat button before ordering.
• Authorized Retailer: MCOR Automotive is an authorized Hertz retailer. Products purchased from MCOR include applicable manufacturer warranty coverage when installed and used according to manufacturer guidelines.