Hertz Marine HMX 8 S-LD-G 8 Inch 2 Way RGB LED Coaxial Speakers 100w RMS
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The Hertz Marine HMX 8 S-LD-G is an 8 inch (200 mm) 2-way coaxial marine speaker rated at 100W RMS / 200W peak at 4 ohms, with integrated RGB LED lighting. It is part of the Hertz HMX Marine range, built for open-water and high-humidity environments.
The S-LD-G variant comes with a paintable sport grille made from ASA plastic, designed to suit sporty boat aesthetics.
Key specifications
- Size: 8 inch (200 mm woofer), 225 mm overall diameter
- Power handling: 100W RMS, 200W peak
- Impedance: 4 ohm
- Mounting depth: 91 mm (3.58 in); overall depth 128 mm (5.04 in)
- Frequency response: 45 Hz to 25 kHz
- Tweeter: 36 mm (1.4 in) PEI dome, neodymium magnet
- Woofer voice coil: 32 mm (1.26 in)
- Weight: 1.66 kg per speaker
- Lighting: integrated RGB LEDs (compatible with HM RGB 1 BK accessory)
Features
- Integrated RGB LED lighting, used in combination with the HM RGB 1 BK accessory.
- Hertz Pure Marine Certified: IP65 protection grade, ASTM-D4329 UV resistance, and ASTM-B117 salt fog operability.
- 1.4 in neodymium magnet tweeter with PEI dome, faceplate and acoustic lens optimised for off-axis dispersion and SPL.
- Sound-transparent sport grille: strong high-frequency transfer, distinctive look and solid physical protection.
- Long-throw 32 mm (1.26 in) voice coil woofer, fine-tuned for infinite baffle applications.
- UV-resistant polypropylene cone with co-moulded Santoprene surround.
- Aramid fibre spider with silicone-insulated lead wire for long-term durability.
- Sealed built-in crossover with resettable solid-state tweeter protection circuit.
- Gold-plated, corrosion-resistant terminals.
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Specification
| Component | HI-END LED COAX |
|---|---|
| Size mm (in.) | 200 (8) |
| Overall diameter mm (in.) | 225 (8.86) |
| Power Handling | - Continuous W 100 |
| Power Handling | - Peak W 200 |
| Impedance | Ohm 4 |
| Depth mm (in.) | 128 (5.04) |
| Mounting depth | mm (in.) 91 (3.58) |
| Tweeter diaphragm mm (in.) | 36 (1.4) |
| Woofer Voice Coil Ø mm (in.) | 32 (1.26) |
| Tweeter Voice Coil Ø mm (in.) | 20 (0.8) |
| Frequency Response | Hz 45 ÷ 25k |
| Woofer Magnet size D x d x h mm (in.) | 90 x 40 x 20 (3.54 x 1.57 x 0.79) |
| Tweeter Magnet size D x h mm (in.) | 19,7 x 3 (0.78 x 0.12) |
| Weight | of one speaker kg (lb.) 1,66 (3.66) |
| Woofer Magnet | High density flux ferrite |
| Tweeter Magnet | Neodymium |
| Cone | Polypropylene with UV inhibitors |
| Dome | PEI |
| Xmech mm (in.) | ±8,5 (0.33) |
What's Included
- HMX 8 S-LD-G
Hertz
About the Hertz HMX 8 S-LD-G
From our tech experts at CEN
Marine-grade 8 inch coaxial speakers handling 100w RMS, built with UV-stable materials and corrosion-resistant hardware for life in sun, salt and spray.
Who it suits
Boats, ribs and open builds, and campers with an outdoor listening area. Anything mounted where rain reaches it should be marine-rated, whatever the vehicle.
Our tech experts advise
In a marine install the wiring decides longevity: tinned cable, sealed joints and a properly fused feed. Mounting position affects the sound more than the speaker choice, because there are no cabin walls to help you. get in touch and we will talk through mounting, wiring and power for your boat.
Explore the full Hertz range at CEN, with fast UK dispatch and expert advice from our Nottingham team. Shop all Hertz
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Frequently Asked Questions
Q: What makes marine speakers different from car speakers?
A: Marine speakers are built with UV-stable, water-resistant cones, grilles and hardware designed for open-air and wet environments. They are the right choice for boats, jet skis, hot tubs and outdoor installs.
Q: Are these speakers fully waterproof?
A: Marine speakers are water-resistant to marine ratings rather than submersible. The IP rating, where provided, is listed in the Specification tab.
Q: Do I need a marine amplifier as well?
A: For best results, yes. Marine amplifiers carry conformal-coated boards that resist moisture and salt air. Match the amplifier to the RMS rating in the Specification tab as you would with any system.
Q: Will these work outside of marine use?
A: Yes. Marine speakers are popular for motorcycles, quads, hot tubs, garden bars and anywhere the weather reaches. Their durability makes them a strong outdoor choice.
Q: What size is the HMX 8 S-LD-G?
A: The HMX 8 S-LD-G is an 8 inch coaxial speaker with a mounting depth of 91 mm (3.58 in) and an overall depth of 128 mm (5.04 in).
Q: How much power can the HMX 8 S-LD-G handle?
A: It is rated at 100W continuous and 200W peak power handling, with a 4 ohm impedance.
Q: Does the HMX 8 S-LD-G have LED lighting?
A: Yes. It has integrated RGB LED lighting, designed to be used with the Hertz HM RGB 1 BK accessory.
