More about the product
The Hertz HMX 6.5 S-LD-G is a premium marine coaxial speaker designed for exceptional audio performance in outdoor and marine environments. Built to withstand harsh conditions, this model combines durability with high-quality sound, making it ideal for boats and watercraft. Its rugged construction ensures resistance to water, salt, and UV rays, providing long-lasting reliability even under extreme exposure.
The speaker features a 6.5-inch polypropylene cone that offers excellent rigidity and responsiveness. This design delivers deep, punchy bass and clear midrange tones, creating a balanced and dynamic sound profile. Paired with a 1.4-inch tweeter dome, the HMX 6.5 S-LD-G produces crisp and detailed high frequencies, ensuring clarity even in open-air listening environments.
One standout feature of this model is its integrated RGB LED lighting system. The LEDs are built into the speaker structure, allowing for vibrant illumination that enhances the atmosphere on any boat. The lighting can be customised with compatible controllers, adding a stylish and functional element to the audio setup.
The HMX 6.5 S-LD-G is engineered with corrosion-resistant materials and a protective grille, ensuring durability in marine conditions. It carries an IP65 rating, meaning it is fully protected against water jets and dust ingress. This level of protection guarantees dependable performance in wet environments, whether exposed to rain or sea spray.
Installation is straightforward thanks to its standard mounting dimensions and integrated design. The speaker is compatible with most marine audio systems and handles up to 75 watts RMS power, delivering strong output without distortion. Its frequency response ranges from 50 Hz to 25 kHz, covering a wide spectrum for rich and dynamic sound.
While the HMX 6.5 S-LD-G excels in durability and audio quality, it is a coaxial speaker, so it may not provide the same level of separation and detail as a full component system. However, for marine use where space and simplicity matter, this model offers an excellent balance of performance, resilience, and visual appeal.
Technical details
- Brand
- Hertz
- Cone
- Polypropylene with UV inhibitors
- Continuous Power Handling
- 75WRMS
- Dome
- PEI
- Frequency Response
- 50Hz ÷ 25kHz
- Impedance
- 4Ω
- Mounting Depth
- 69mm
- Peak Power
- 150W
- Size
- 6.5 inches
- Tweeter Magnet
- Neodymium
- Woofer Magnet
- High density flux ferrite
Frequently Asked Questions
In addition to shipping all over Australia with Australia Post, we also offer in-store pickup from our Bankstown, NSW store. From the checkout, you're able to select between shipping methods, regular, Express, or In-Store Pickup. For more information on Bankstown Sound shipping, please read more here.
We offer installation services for everything we sell. Our installations come with a lifetime warranty and are performed at our Bankstown, NSW workshop by Car Audio installation specialists with over 25+ years experience. Please contact us for an installation quote if you're wanting us to do it for you.
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.

