More about the product
The Hertz HMX 8 S LD Powersport Marine Coaxial Speaker is designed for premium audio performance in the toughest outdoor conditions. Built for both marine and powersport applications, this 8-inch speaker combines rugged durability with clear, dynamic sound. It is engineered to withstand exposure to water, salt, and dust, making it ideal for boats, ATVs, and side-by-sides.
The HMX 8 S LD features a coaxial design, with the tweeter mounted on the same axis as the woofer. This configuration ensures balanced sound with crisp highs and strong mid-bass, even in open-air environments. The polypropylene cone is reinforced for rigidity, reducing distortion at high volumes. The tweeter uses corrosion-resistant materials, guaranteeing long-lasting clarity in harsh conditions.
A standout feature of the HMX 8 S LD is its integrated LED lighting system. This adds a stylish visual element to any installation, creating an attractive ambience while maintaining durability. The lighting is designed to withstand marine and powersport environments, offering both functionality and aesthetic appeal.
The speaker includes a sealed motor structure and waterproof components to prevent damage from moisture and debris. These features make it a reliable choice for outdoor installations where exposure to the elements is constant. Power handling is impressive, allowing the speaker to deliver dynamic sound without strain. Its wide frequency response ensures clear vocals and punchy bass that can cut through engine noise and wind.
Installation is straightforward thanks to its standard sizing and included hardware, making it a practical upgrade for any marine or powersport audio system. While the HMX 8 S LD excels in durability and clarity, it is not designed for extreme bass enthusiasts. Pairing it with a dedicated subwoofer can enhance low-end performance for those seeking a fuller sound. Overall, this model offers a perfect balance of ruggedness, audio quality, and visual appeal for outdoor adventures.
Technical details
- Brand
- Hertz
- Cone
- Polypropylene with UV inhibitors
- Continuous Power Handling
- 100WRMS
- Dome
- PEI
- Frequency Response
- 45Hz ÷ 25kHz
- Impedance
- 4Ω
- Mounting Depth
- 91mm
- Peak Power
- 200W
- Size
- 8.8 inches
- Tweeter Magnet
- Neodymium
- Woofer Magnet
- High density flux ferrite
Look out for Bankstown Sound Recommendations
The Hertz HMX 8 S LD is suited for marine and powersport enthusiasts who want reliable audio and stylish LED lighting in harsh conditions. It is a strong upgrade from basic factory speakers, offering better clarity and durability. Compared to cheaper alternatives, it provides superior build quality and balanced sound. However, those seeking deep bass should consider adding a subwoofer for enhanced low-end performance.
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.

