More about the product
The Hertz HMX 6.5 S-LD-SW is a premium marine coaxial speaker designed for exceptional audio performance and durability in harsh outdoor environments. Built specifically for marine and powersport applications, this speaker combines robust construction with high-quality sound, making it ideal for boats, jet skis, and off-road vehicles exposed to water, salt, and UV rays.
The HMX 6.5 S-LD-SW features a 6.5-inch polypropylene cone that delivers strong bass and clear midrange tones. This material ensures rigidity and responsiveness, producing a balanced sound profile even in open-air conditions. Paired with a 1.4-inch dome tweeter, the speaker provides crisp and detailed high frequencies, creating a full and dynamic listening experience.
A standout feature of the HMX 6.5 S-LD-SW is its integrated RGB LED lighting system. The LEDs are built into the speaker structure, offering vibrant illumination that enhances the atmosphere on any boat or vehicle. The lighting can be customised with compatible controllers, adding a stylish and functional element to the audio setup.
The speaker is engineered with corrosion-resistant materials and a protective grille, ensuring long-lasting reliability in marine environments. It carries an IP65 rating, meaning it is fully protected against water jets and dust ingress. This level of protection guarantees dependable performance even when exposed to rain, sea spray, or intense sunlight.
Installation is simple thanks to its standard mounting dimensions and integrated design. The HMX 6.5 S-LD-SW is compatible with most marine and powersport 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.
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
Look out for Bankstown Sound Recommendations
The Hertz HMX 6.5 S-LD-SW is ideal for boat owners and powersport enthusiasts seeking a durable speaker with added visual appeal. Its RGB LED lighting makes it perfect for those who want both performance and ambience. Compared to standard marine speakers, it offers superior build quality and style. While it may not match the detail of a component system, it provides excellent sound and reliability for most marine and off-road applications. It suits anyone looking for a robust, stylish audio solution for outdoor environments.
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.

