Hertz HMX7SLDG Marine 7.7 Inch RGB Coaxial Speaker Pair Black Grey

Hertz HMX7SLDG Marine 7.7 Inch 2-Way RGB Coaxial Speaker Pair 100W Continuous 200W Peak Black Grey with IP65 UV and Salt Fog Resistance

The HMX7SLDG from Hertz is a 7.7 inch marine grade 2-way coaxial speaker pair in black grey 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 HMX7SLDG is engineered for open water use in high-humidity marine environments. Frequency response spans 45Hz to 25kHz with a mounting depth of 123mm.

Product overview

The HMX7SLDG features a sports paintable ASA plastic grille designed to match sporty boat aesthetics, with RGB lighting capability for customisable illumination. 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 25mm 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.

RGB lighting with sports ASA plastic grille: The sports paintable ASA plastic grille features RGB lighting for customisable illumination to match the vessel's aesthetic, with a sound-transparent design for efficient high-frequency transfer and rock-solid speaker cone 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 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.

What is the RGB feature on the HMX7SLDG?
The HMX7SLDG grille includes RGB lighting capability for customisable illumination, allowing the speaker's appearance to be matched to the vessel's lighting scheme or aesthetic. Confirm the RGB control and wiring requirements for your specific installation before ordering.

Can the grille of the HMX7SLDG 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 HMX7SLDG woofer is specifically tuned for this mounting configuration, delivering optimised bass performance in marine panel installations.

Is the HMX7SLDG sold as a single speaker or a pair?
The HMX7SLDG is sold as a matched pair of speakers.