Hertz HMX7SLDS Marine 7.7 Inch RGB Coaxial Speaker Pair Grey White

Hertz HMX7SLDS Marine 7.7 Inch 2-Way RGB Coaxial Speaker Pair 100W Continuous 200W Peak Grey White with IP65 UV and Salt Fog Resistance

The HMX7SLDS from Hertz is a 7.7 inch marine grade 2-way coaxial speaker pair in grey white with RGB lighting, delivering 100W continuous and 200W peak power handling at 4 ohms. Certified to Hertz Pure Marine standards including IP65 protection, ASTM-D4329 UV resistance, and ASTM-B117 salt fog operability, the HMX7SLDS is engineered for open water use in high-humidity marine environments. The HMX7SLDS is the grey white colour variant of the HMX7SLDG black grey model, sharing identical specifications. Frequency response spans 45Hz to 25kHz with a mounting depth of 123mm.

Product overview

The HMX7SLDS features a sports paintable ASA plastic grille in grey white with RGB lighting capability for customisable illumination suited to light-coloured vessel interiors and hulls. The polypropylene cone with UV inhibitors and co-moulded Santoprene surround provides long-term durability against UV exposure and moisture. The Aramid fibre spider with silicone-insulated lead wire ensures consistent performance over time in demanding marine environments.

The 1.4 inch neodymium magnet tweeter uses a PEI dome combined with a faceplate and acoustic lens optimised for off-axis dispersion and high SPL. A sealed built-in crossover with resettable solid-state tweeter protection circuit is integrated into the speaker. Gold-plated corrosion-resistant terminals maintain connection integrity in high-humidity and salt fog environments. The long-throw 32mm voice coil woofer is fine-tuned for infinite baffle applications typical of marine speaker installations.

Features and benefits

Hertz Pure Marine Certified with IP65 UV and salt fog ratings: Certified to IP65 protection, ASTM-D4329 UV resistance, and ASTM-B117 salt fog operability standards, ensuring reliable performance in open water marine environments over multiple seasons.

Grey white colour with RGB lighting and sports ASA plastic grille: The grey white sports paintable ASA plastic grille with RGB lighting suits light-coloured vessel interiors and hulls, with a sound-transparent design for efficient high-frequency transfer and solid speaker protection.

Polypropylene cone with co-moulded Santoprene surround: The polypropylene cone with UV inhibitors and co-moulded Santoprene surround provide long-term durability against UV exposure and moisture in open water marine applications.

Aramid fibre spider with silicone-insulated lead wire: The Aramid fibre spider combined with silicone-insulated lead wire ensures durability and consistent performance over time in high-humidity marine environments.

1.4 inch neodymium tweeter with PEI dome and acoustic lens: The neodymium magnet tweeter with PEI dome, faceplate, and acoustic lens is optimised for off-axis dispersion and high SPL, delivering clear, extended high-frequency reproduction in open-air marine listening environments.

Sealed built-in crossover with resettable tweeter protection: The sealed built-in crossover includes a resettable solid-state tweeter protection circuit, protecting the tweeter from overload without requiring fuse replacement.

Gold-plated corrosion-resistant terminals: Gold-plated terminals resist corrosion in high-humidity and salt fog marine environments, maintaining reliable connection integrity over the long term.

Long-throw woofer fine-tuned for infinite baffle: The long-throw 32mm voice coil woofer with a maximum excursion of plus or minus 8.5mm is fine-tuned for infinite baffle applications common in marine speaker mounting installations.

Technical specs

Frequently asked questions

What is the difference between the HMX7SLDS and the HMX7SLDG?
Both are Hertz HMX Marine 7.7 inch 2-way RGB coaxial speaker pairs with identical specifications, certifications, and construction. The HMX7SLDS is finished in grey white, suited to light-coloured vessel interiors and hulls. The HMX7SLDG is finished in black grey, suited to dark-coloured or sporty vessel interiors. Select based on the colour that best suits your specific vessel aesthetic.

What is Hertz Pure Marine Certification?
Hertz Pure Marine Certification is Hertz's own marine audio product standard, requiring compliance with IP65 ingress protection, ASTM-D4329 UV resistance testing, and ASTM-B117 salt fog operability testing. Products bearing this certification are confirmed to perform reliably in open water, high-humidity, UV-exposed, and salt fog environments over multiple seasons.

Can the grille of the HMX7SLDS be painted?
Yes. The sports ASA plastic grille is paintable, allowing it to be colour-matched to the vessel's hull or deck finish for a fully integrated aesthetic.

What does infinite baffle fine-tuning mean for a marine installation?
Infinite baffle refers to speaker mounting directly into a panel or surface without a rear enclosure, which is the typical mounting method in marine vessel doors, consoles, and panels. The HMX7SLDS woofer is specifically tuned for this mounting configuration, delivering optimised bass performance in marine panel installations.

Is the HMX7SLDS sold as a single speaker or a pair?
The HMX7SLDS is sold as a matched pair of speakers.