Hertz
Hertz HEX 6.5 M-W-OHEX 6
The HEX 6.5 M-W-O brings refined marine design and superior acoustic performance together in a compact, durable form. Featuring a Marine Total White grille, it seamlessly complements any boat interior or deck, adding a clean and elegant aesthetic to your onboard sound system.
Highlights
- Hertz Pure Marine Certified Product stamp featuring the IP65 protection grade, ASTM-D4329 standards for UV resistance and ASTM-B117 for salt fog operability.
- High efficiency tweeter designed with FEM simulation to maximize off-axis emission, typical of in-boat install.
- Sound-transparent mesh grille with twist and lock locking system, providing an elegant style and a rock-solid protection.
- Woofer with 25 mm (1”) voice coil fine-tuned for infinite baffle application featuring silicone insulated lead-wire for durability.
Key specs
Full specs- Component
- COAX
- Size mm (in.)
- 165 (6.5)
- Power Handling - Continuous W
- 50
- Power Handling - Peak W
- 100
- Impedance Ohm
- 4
- Depth mm (in.)
- 85 (3.25)
- Woofer Voice Coil Ø mm (in.)
- 25 (1)
- Tweeter Voice Coil Ø mm (in.)
- 13 (0.5)
Key specs
Full specs- Component
- COAX
- Size mm (in.)
- 165 (6.5)
- Power Handling - Continuous W
- 50
- Power Handling - Peak W
- 100
Highlights
Overview- Hertz Pure Marine Certified Product stamp featuring the IP65 protection grade, ASTM-D4329 standards for UV resistance and ASTM-B117 for salt fog operability.
- High efficiency tweeter designed with FEM simulation to maximize off-axis emission, typical of in-boat install.
- Sound-transparent mesh grille with twist and lock locking system, providing an elegant style and a rock-solid protection.
Overview
The HEX 6.5 M-W-O brings refined marine design and superior acoustic performance together in a compact, durable form. Featuring a Marine Total White grille, it seamlessly complements any boat interior or deck, adding a clean and elegant aesthetic to your onboard sound system. Built and tested for real marine environments, this 6.5-inch coaxial speaker delivers a detailed, dynamic sound while maintaining a mounting depth of only 2.36 inches, making it ideal for installations where space is limited. Certified with the Hertz Pure Marine stamp, the HEX 6.5 M-W-O meets IP65, ASTM-D4329 UV, and ASTM-B117 salt fog standards, ensuring long-lasting reliability and resistance to the elements. The high-efficiency tweeter, optimized through FEM simulation, guarantees excellent off-axis performance for in-boat listening, while the sound-transparent mesh grille with a twist-and-lock system combines elegance with robust protection. Its 25 mm (1”) voice coil woofer, tuned for infinite baffle applications, and sealed built-in crossover with a resettable tweeter protection circuit, ensure precise, consistent audio reproduction season after season. Nickel-plated corrosion-resistant terminals and silicone-insulated leads complete a design built to perform flawlessly in marine conditions. Pure sound, lasting beauty, and marine-grade strength, the perfect combination for every voyage.
Highlights
Key features
- Hertz Pure Marine Certified Product stamp featuring the IP65 protection grade, ASTM-D4329 standards for UV resistance and ASTM-B117 for salt fog operability.
- High efficiency tweeter designed with FEM simulation to maximize off-axis emission, typical of in-boat install.
- Sound-transparent mesh grille with twist and lock locking system, providing an elegant style and a rock-solid protection.
- Woofer with 25 mm (1”) voice coil fine-tuned for infinite baffle application featuring silicone insulated lead-wire for durability.
- Sealed built-in crossover with resettable solid-state tweeter protection circuit.
- Nickel-plated corrosion resistant terminals.
- IP CERTIFICATION
- WATER JET TESTED
- UV RESISTANT
- SALT FOG TESTED
Technologies

IP CERTIFICATION
‘

WATER JET TESTED
The protection grade IP65 for speakers define all the Hertz Marine products as totally protected against water

UV RESISTANT
According to the severe ASTM-D4329 standards for UV resistance, all the materials used for Hertz Marine products

SALT FOG TESTED
To satisfy the standards required by ASTM-B117, Hertz Marine products are tested with massive salt fog spray to
Specs
Technical Specs
17
| Component | COAX |
| Size mm (in.) | 165 (6.5) |
| Power Handling - Continuous W | 50 |
| Power Handling - Peak W | 100 |
| Impedance Ohm | 4 |
| Depth mm (in.) | 85 (3.25) |
| Woofer Voice Coil Ø mm (in.) | 25 (1) |
| Tweeter Voice Coil Ø mm (in.) | 13 (0.5) |
| Frequency Response Hz | 50 ÷ 23k |
| Woofer Magnet size D x d x h mm (in.) | 85 x 32 x 15 (3.35 x 1.26 x 0.59) |
| Tweeter Magnet size D x h mm (in.) | 12,9 x 2 + 11 x 1,9 (0.51 x 0.08 + 0.43 x 0.07) |
| Weight of one speaker kg (lb.) | 1 (2.2) |
| Woofer Magnet | High density flux ferrite |
| Tweeter Magnet | Neodymium |
| Cone | Polypropylene with UV inhibitors |
| Dome | PEI |
| Xmech mm (in.) | ±4,8 (0.19) |
Electro-acoustic Specs
12
| D mm | 125 |
| Re Ohm | 3,3 |
| Fs Hz | 78 |
| Le mH | 0,109 |
| Vas I | 6,52 |
| Mms g | 13,5 |
| Cms mm/N | 0,31 |
| BL T*m | 4,8 |
| Qts | 0,82 |
| Qes | 0,95 |
| Qms | 6,1 |
| Spl dB | 88 |
Physical Specs
5

| A | 172 mm | 6.77 in. |
| B | 128 mm | 5.04 in. |
| C | 85 mm | 3.25 in. |
| D | 60,5 mm | 2.38 in. |
| F | 24,5 mm | 0.96 in. |
Frequency response

Visual spec reference.
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