The PORTOFINO 77 XC embodies the perfect balance of elegance and power, designed to elevate every moment at sea. Featuring a larger 7.7-inch woofer, it delivers enhanced dynamics, deeper mid-bass presence, and a broader soundstage, filling luxury yachts with crystal-clear highs and rich, commanding low frequencies. Its flush-mount architecture and ultra-low-profile fine mesh magnetic grille create a clean, frameless aesthetic, perfectly suited for contemporary marine interiors and dark upholstery installations. The dedicated crossover, specifically engineered for flush-mount integration, ensures optimized frequency response and natural vocal presence, maintaining clarity and tonal balance even behind the grille. Constructed with true marine-grade materials, the PORTOFINO 77 XC is built to withstand UV exposure, salt fog, and moisture. Corrosion-resistant terminals and stainless steel mounting hardware guarantee long-term reliability in demanding offshore environments. Created for yacht owners who demand both sophistication and uncompromising performance, the PORTOFINO 77 XC represents the Italian way of design and sound, setting a new benchmark in premium flush-mount marine audio.
| Component | FLUSH-MOUNT COAX |
| Size mm (in.) | 195 (7.7) |
| Power Handling - Continuous W | 100 |
| Power Handling - Peak W | 200 |
| Impedance Ohm | 4 |
| Depth mm (in.) | 108 (4.25) |
| 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 (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) |
| D mm | 146 |
| Xmax mm | 6 |
| Re Ohm | 3.3 |
| Fs Hz | 60 |
| Le mH | 0.56 |
| Vas I | 12.50 |
| Mms g | 22 |
| Cms mm/N | 0.32 |
| BL T*m | 6 |
| Qts | 0.72 |
| Qes | 0.76 |
| Qms | 11.8 |
| Spl dB | 91 |
| A | 232 mm | 9.13 in. |
| B | 190.5 mm | 6.73 in. |
| C | 108 mm | 4.25 in. |
| D | 9 mm | 0.35 in. |
| U | 208 mm | 8.19 in. |
| V | 4.5 mm | 0.18 in. |
The protection grade IP65 for speakers define all the Hertz Marine products as totally protected against water jets of different entities, making them highly performant in the marine environment.
According to the severe ASTM-D4329 standards for UV resistance, all the materials used for Hertz Marine products are designed to face long time exposition to UV radiations while cruising on the open sea.
To satisfy the standards required by ASTM-B117, Hertz Marine products are tested with massive salt fog spray to ensure a complete resistance to corrosion, typical of this atmospheric agent.
The Portofino Line by Hertz Marine brings sophisticated design and outstanding audio to luxury vessels. With its flush-mount architecture and marine-grade materials, Portofino delivers stunning sound while integrating seamlessly into high-end yacht environments. Offering premium quality with a class-leading price-performance ratio, Portofino redefines excellence in marine audio.
• Low-profile fine mesh grille with magnetic mounting for a clean, screw-free finish
• Coaxial speakers with concentric tweeter design for smooth, wide sound dispersion
• Minimal visual impact, maximum acoustic performance
• White marine-grade finish tailored for luxury marine interiors
• Built to pair with Hertz Marine amplifiers for dynamic, powerful playback
• Salt-fog and UV resistant (compliant with ASTM B117/D4329 standards)
• Waterproof construction with drainage and anti-resonance features
• Corrosion-proof terminals and sealed crossover networks
• Designed for infinite-baffle applications, no enclosure required
Portofino is not just audio equipment it is a fusion of Italian design, marine engineering, and sonic craftsmanship.
For those who demand elegance, performance, and resilience on the open sea.
