More about the product
The Hertz MPX690.3 Mille Pro 6x9-Inch 3-Way Coaxial Speakers are engineered for premium sound quality and dynamic performance. Designed for those seeking a significant upgrade from factory speakers, this model combines advanced acoustic technology with high-quality materials to deliver a rich and detailed listening experience.
The MPX690.3 features a large 6x9-inch pressed paper cone reinforced with cotton fibres. This design ensures natural and accurate midrange reproduction, making vocals and instruments sound clear and lifelike. The rigid, low-resonance basket minimises unwanted vibrations, maintaining clean sound even at high volumes.
A key highlight of this speaker is its 3-way configuration. It includes a 29mm Tetolon fibre dome tweeter for smooth, extended high frequencies and a dedicated super tweeter for added brilliance in the upper range. This combination creates a wide and immersive soundstage, allowing music to feel full and balanced. The integrated crossover network is precisely tuned for seamless transitions between the woofer, tweeter, and super tweeter, ensuring a coherent and natural sound.
With a power handling capacity of 130 watts RMS and 260 watts peak, the MPX690.3 delivers strong, dynamic audio when paired with an aftermarket amplifier. Its sensitivity rating of 94 dB ensures efficient performance even with moderate power, while the 4-ohm impedance makes it compatible with most car audio systems.
Installation is straightforward thanks to the standard 6x9-inch size and well-designed mounting hardware. The tweeter’s acoustic lens helps maintain clarity even when installed off-axis, which is common in door or rear deck setups.
The Hertz MPX690.3 Mille Pro is ideal for those who want a noticeable improvement in sound quality without the complexity of a separate component system. While it offers excellent clarity and detail across all frequencies, it does not produce deep bass on its own. For those seeking powerful low-end performance, pairing these speakers with a dedicated subwoofer is recommended.
Built with premium materials and advanced acoustic design, the MPX690.3 provides a refined listening experience that makes every drive more enjoyable.
Technical details
- Brand
- Hertz
- Cone
- Pressed-pulp cone with cotton fibres
- Continuous Power Handling
- 130WRMS
- Dome
- Tetolon
- Frequency Response
- 30Hz ÷ 24kHz
- Impedance
- 4Ω
- Mounting Depth
- 90mm
- Peak Power
- 260W
- Size
- 6 x 9 inches
- Tweeter Magnet
- Neodymium
- Woofer Magnet
- High density flux ferrite
Look out for Bankstown Sound Recommendations
The Hertz MPX690.3 Mille Pro is recommended for those seeking a high-quality upgrade from factory speakers without installing a full component system. It suits music enthusiasts who value clarity, detail, and a wide soundstage. Compared to entry-level speakers, it offers superior tonal accuracy and smoother highs. However, it does not deliver deep bass on its own, so pairing with a subwoofer is suggested for those wanting powerful low-end performance. This model is ideal for those who want premium sound in a simple, easy-to-install package.
Why Choose Bankstown Sound for Your Car Audio & Tech Upgrades
At our Bankstown Sound store and workshop in Sydney, our team ensures every car and auto audio installation and upgrade starts with an understanding of how you use your car. Our team works with you to understand your driving habits, the features you rely on, and the problems you’re trying to solve.
Most factory setups are built to broad standards and often lack the clarity or seamless connectivity required for how people actually drive. That’s why we focus on modernising your dashboard and audio performance based on how you use your vehicle.



