Hertz
Hertz HMX 6.5 / CHMX 6
The HMX 6.5 hi-performance marine coaxial speakers, also available in the black option HMX 6.5-C, is optimized to perform in infinite baffle, with a solid bass and an outstanding output.
Highlights
- Engineered and tested for the real environment of application (UV, salt-fog, vibrations, water spray, thermal shock, dust).
- 1.4” Neodymium magnet tweeter featuring a PEI material dome combined with faceplate and acoustic lens optimized for best off-axis dispersion and highest SPL.
- Sound-transparent stainless steel tweeter mesh grille providing efficient high-frequency transfer, attractive look and a rock-solid protection.
- Long-throw 25mm (1”) voice coil woofer fine-tuned for infinite baffle application featuring polypropylene cone injected with UV inhibitors and co-molded Santoprene surround.
Key specs
Full specs- Component
- HI-END COAX
- Size mm (in.)
- 165 (6.5)
- Power Handling - Continuous W
- 75
- Power Handling - Peak W
- 150
- Impedance Ohm
- 4
- Depth mm (in.)
- 95,6 (3.76)
- Woofer Voice Coil Ø mm (in.)
- 25 (1)
- Tweeter Voice Coil Ø mm (in.)
- 20 (0.8)
Key specs
Full specs- Component
- HI-END COAX
- Size mm (in.)
- 165 (6.5)
- Power Handling - Continuous W
- 75
- Power Handling - Peak W
- 150
Highlights
Overview- Engineered and tested for the real environment of application (UV, salt-fog, vibrations, water spray, thermal shock, dust).
- 1.4” Neodymium magnet tweeter featuring a PEI material dome combined with faceplate and acoustic lens optimized for best off-axis dispersion and highest SPL.
- Sound-transparent stainless steel tweeter mesh grille providing efficient high-frequency transfer, attractive look and a rock-solid protection.
Overview
Key features
- Engineered and tested for the real environment of application (UV, salt-fog, vibrations, water spray, thermal shock, dust).
- 1.4” Neodymium magnet tweeter featuring a PEI material dome combined with faceplate and acoustic lens optimized for best off-axis dispersion and highest SPL.
- Sound-transparent stainless steel tweeter mesh grille providing efficient high-frequency transfer, attractive look and a rock-solid protection.
- Long-throw 25mm (1”) voice coil woofer fine-tuned for infinite baffle application featuring polypropylene cone injected with UV inhibitors and co-molded Santoprene surround.
- Aramid fiber spider with silicone-insulated lead wires ensuring durability and constant performance over time.
- FEM optimized high-excursion mobile equipment driven by a massive magnetic group encapsulated into a marine-grade polymer injected basket.
- Sealed built-in crossover with resettable solid-state tweeter protection circuit.
- Gold-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
| Component | HI-END COAX |
| Size mm (in.) | 165 (6.5) |
| Power Handling - Continuous W | 75 |
| Power Handling - Peak W | 150 |
| Impedance Ohm | 4 |
| Depth mm (in.) | 95,6 (3.76) |
| Woofer Voice Coil Ø mm (in.) | 25 (1) |
| Tweeter Voice Coil Ø mm (in.) | 20 (0.8) |
| Frequency Response Hz | 50 ÷ 25k |
| Woofer Magnet size D x d x h mm (in.) | 78,5 x 32 x 17 (3.09 x 1.26 x 0.67) |
| Tweeter Magnet size D x h mm (in.) | 19,7 x 3 (0.78 x 0.12) |
| 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.) | ±6,65 (0.26) |
Electro-acoustic Specs
| D mm | 125 |
| Re Ohm | 3,5 |
| Fs Hz | 65 |
| Le mH | 0,53 |
| Vas I | 8,8 |
| Mms g | 14 |
| Cms mm/N | 0,4 |
| BL T*m | 5,2 |
| Qts | 0,7 |
| Qes | 0,75 |
| Qms | 11,5 |
| Spl dB | 89 |
Physical Specs

| A | 172,2 mm | 6.78 in. |
| B | 128 mm | 5.04 in. |
| C | 95,6 mm | 3.76 in. |
| D | 69 mm | 2.72 in. |
| F | 26,6 mm | 1.05 in. |
Frequency response

Visual spec reference.
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