Hertz 7.7" Flush-Mount Coaxial Marine Speaker In Black - PORTOFINO77XC


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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.

Technologies

IP 65 CERTIFICATION

 

UV RESISTANT

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.

 

WATER JET TESTED

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.

 

SALT FOG TESTED

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.

 
TECHNICAL SPECS
ComponentFLUSH-MOUNT COAX
Size mm (in.)195 (7.7)
Power Handling - Continuous W100
Power Handling - Peak W200
Impedance Ohm4
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 Hz45 ÷ 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 MagnetHigh density flux ferrite
Tweeter MagnetNeodymium
ConePolypropylene with UV inhibitors
DomePEI
Xmech mm (in.)±6,65 (0.26)
Electro-acoustic Specs
D mm146
Xmax mm6
Re Ohm3.3
Fs Hz60
Le mH0.56
Vas I12.50
Mms g22
Cms mm/N0.32
BL T*m6
Qts0.72
Qes0.76
Qms11.8
Spl dB91

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