





Hertz HMX8LD-TC 8" RGB LED Marine Coaxial Speakers
- 8-inch two-way marine coaxial speakers
- 100W RMS, 200W peak handling
- Integrated RGB LED lighting
- IP65-rated marine construction
- Black tone-on-tone grille design
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The Hertz HMX8LD-TC is a pair of 8-inch, 4-ohm marine coaxial speakers designed for boats and powersports installations that need durable full-range sound and integrated RGB lighting. Each speaker combines a woofer and tweeter in one assembly, helping simplify an audio upgrade where dedicated component-speaker mounting is not practical. The black tone-on-tone grille suits installations where a darker, coordinated appearance is preferred.
With 100 watts continuous and 200 watts peak power handling, these speakers are intended for systems using a capable marine-rated head unit or external amplifier. Their 91 dB sensitivity and 45 Hz to 25 kHz frequency response support clear output across bass, midrange, and treble frequencies. The 4-ohm load is compatible with many conventional marine and car-audio amplifier channels.
The HMX8LD-TC uses a 1.4-inch PEI-dome tweeter with a neodymium magnet, faceplate, and acoustic lens. This arrangement is designed to improve off-axis high-frequency dispersion, which is useful when speakers are mounted away from the primary listening position. A sealed built-in crossover directs the appropriate frequency ranges to the woofer and tweeter while incorporating resettable solid-state tweeter protection.
For outdoor use, the woofer uses a polypropylene cone with UV inhibitors and a co-molded Santoprene surround. Its marine-grade polymer basket, corrosion-resistant gold-plated terminals, aramid-fiber spider, and silicone-insulated lead wires are selected for durability in marine and powersports environments. The model carries an IP65 protection rating and is specified for UV-resistance and salt-fog testing standards.
Integrated RGB LEDs are positioned beneath the tweeter and diffuse through a transparent polypropylene cover. The optional Hertz HM RGB 1 BK controller can be used to operate the lighting system. With a 180 mm mounting cutout and 91 mm mounting depth, these speakers fit installations that have sufficient panel space and clearance behind the mounting surface.
Key Features
- 8-Inch Two-Way Coaxial Design: Combines woofer and tweeter output in a single marine speaker assembly.
- 100W Continuous Power Handling: Supports amplification matched to 100 watts RMS per speaker.
- Integrated RGB LEDs: Adds configurable accent lighting when used with the optional HM RGB 1 BK controller.
- PEI-Dome Tweeter: Uses an acoustic lens to support broad off-axis high-frequency dispersion.
- Marine-Ready Materials: UV-inhibited polypropylene, Santoprene, and marine-grade polymer support outdoor use.
- Sealed Built-In Crossover: Separates woofer and tweeter frequencies and includes resettable tweeter protection.
Design & Installation
The HMX8LD-TC has a black tone-on-tone grille, sound-transparent stainless-steel tweeter mesh, and a marine-grade polymer basket. Its 32 mm woofer voice coil, high-density ferrite woofer magnet, neodymium tweeter magnet, and long-excursion motor system are engineered for high-output marine speaker operation. The speaker is IP65 rated and uses materials selected for exposure to UV, salt fog, water spray, vibration, thermal shock, dust, and mud.
Confirm a 180 mm cutout, 91 mm mounting depth, and 255 mm overall outside diameter before cutting the mounting surface. Connect each speaker to a compatible 4-ohm amplifier or head-unit channel, observing correct polarity and power matching. For RGB operation, route the separate lighting wiring according to the applicable Hertz instructions and add the optional HM RGB 1 BK controller.
| Model | HMX8LD-TC |
|---|---|
| UPC | 8018823137430 |
| Product Type | Marine coaxial speakers |
| Configuration | Two-way coaxial |
| Package Quantity | Pair |
| Nominal Woofer Size | 200 mm (8 in.) |
| Continuous Power Handling | 100 W |
| Peak Power Handling | 200 W |
| Impedance | 4 ohms |
| Frequency Response | 45 Hz to 25 kHz |
| Sensitivity | 91 dB SPL |
| Total Depth | 123 mm (4.84 in.) |
| Mounting Depth | 91 mm (3.58 in.) |
| Mounting Cutout Diameter | 180 mm (7.09 in.) |
| Overall Outside Diameter | 255 mm (8.86 in.) |
| Grille Height | 32 mm (1.26 in.) |
| Weight Per Speaker | 1.66 kg (3.66 lb.) |
| Tweeter Diaphragm Size | 36 mm (1.4 in.) |
| Woofer Voice Coil Diameter | 32 mm (1.26 in.) |
| Tweeter Voice Coil Diameter | 20 mm (0.8 in.) |
| Woofer Magnet | High-density flux ferrite |
| Woofer Magnet Dimensions | 90 x 40 x 20 mm (3.54 x 1.57 x 0.79 in.) |
| Tweeter Magnet | Neodymium |
| Tweeter Magnet Dimensions | 19.7 x 3 mm (0.78 x 0.12 in.) |
| Woofer Cone Material | Polypropylene with UV inhibitors |
| Woofer Surround | Co-molded Santoprene rubber |
| Tweeter Dome Material | PEI |
| Spider Material | Aramid fiber |
| Lead Wires | Silicone-insulated |
| Basket Material | Marine-grade injected polymer |
| Grille Finish | Black tone-on-tone |
| Tweeter Mesh Material | Sound-transparent stainless steel |
| Terminals | Corrosion-resistant gold-plated |
| Crossover | Sealed built-in crossover |
| Tweeter Protection | Resettable solid-state protection circuit |
| RGB Lighting | Integrated RGB LED lighting |
| RGB Controller Compatibility | Optional Hertz HM RGB 1 BK |
| Ingress Protection Rating | IP65 |
| UV Resistance Standard | ASTM-D4329 |
| Salt Fog Standard | ASTM-B117 |
| Recommended Acoustic Loading | Infinite baffle |
| Linear Excursion (Xmax) | 4.5 mm |
| Mechanical Excursion (Xmech) | ±8.5 mm (0.33 in.) |
| DC Resistance (Re) | 3.1 ohms |
| Resonance Frequency (Fs) | 50 Hz |
| Voice Coil Inductance (Le) | 0.52 mH |
| Equivalent Compliance Volume (Vas) | 29.46 L |
| Moving Mass (Mms) | 27.3 g |
| Compliance (Cms) | 0.37 mm/N |
| Force Factor (BL) | 6.6 T·m |
| Total Q (Qts) | 0.58 |
| Electrical Q (Qes) | 0.61 |
| Mechanical Q (Qms) | 11 |
| Effective Piston Diameter (D) | 174 mm |
Will these fit a standard 8-inch speaker opening?
Verify the actual mounting measurements rather than the nominal speaker size. The HMX8LD-TC requires a 180 mm (7.09-inch) mounting cutout, has a 91 mm (3.58-inch) mounting depth, and measures 255 mm (8.86 inches) across the outside.
What amplifier power should I use?
Each speaker is rated for 100 watts continuous and 200 watts peak at 4 ohms. Use an amplifier or source-unit channel that is stable at 4 ohms and set gain carefully to avoid distortion.
Do the RGB lights work without an additional accessory?
The speakers have integrated RGB LED lighting, but Hertz specifies the optional HM RGB 1 BK accessory for lighting control. Plan for separate RGB wiring and the controller if you want adjustable lighting functions.
Are these speakers suitable for marine use?
Yes. They are IP65 rated and use UV-inhibited polypropylene, a Santoprene surround, a marine-grade polymer basket, and corrosion-resistant gold-plated terminals. Hertz also specifies UV-resistance and salt-fog testing standards for this model.
Is a separate crossover required?
No separate passive crossover is required for the coaxial speaker assembly. Each HMX8LD-TC includes a sealed built-in crossover with a resettable solid-state tweeter protection circuit.
What is included with this listing?
This product is sold as a pair of HMX8LD-TC speakers with black grilles. The HM RGB 1 BK lighting controller is identified by Hertz as an optional accessory, not part of the speaker model itself.
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- Orders placed on business days are typically processed the same day, delivery estimates are shown at checkout.
Warranty & Returns
- Authorized Dealer — 100% authentic products with full manufacturer warranty
- 60-Day Returns — Hassle-free returns, see our return policy for details
- Price Match Guarantee — We match verified prices, see policy for terms

Hertz HMX8LD-TC 8" RGB LED Marine Coaxial Speakers


















