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Hertz
Hertz PORTOFINO 100 S4WDelivers Powerful
The PORTOFINO 100 S4W delivers powerful, refined bass designed to complement the elegance of luxury yachts.
Highlights
- Powerful low frequencies – deep, impactful bass that enhances every voyage.
- Flush-mount design – ultra-low-profile installation for seamless integration.
- Fine mesh magnetic grille – elegant look with secure, tool-free attachment.
- Premium marine-grade materials – built to resist UV, salt, and moisture.
Key specs
Full specs- Size mm (in.)
- 250 (10)
- Power Handling - Continuous W
- 250
- Power Handling - Peak W
- 500
- Impedance Ohm
- 4
- Depth mm (in.)
- 174 (6.85)
- Voice Coil Type
- single
- No Filter Component
- SUBWOOFER
- Voice Coil Ø
- 50 (2)
Key specs
Full specs- Size mm (in.)
- 250 (10)
- Power Handling - Continuous W
- 250
- Power Handling - Peak W
- 500
- Impedance Ohm
- 4
Highlights
Overview- Powerful low frequencies – deep, impactful bass that enhances every voyage.
- Flush-mount design – ultra-low-profile installation for seamless integration.
- Fine mesh magnetic grille – elegant look with secure, tool-free attachment.
Overview
The PORTOFINO 100 S4W delivers powerful, refined bass designed to complement the elegance of luxury yachts. Its 10-inch flush-mount design ensures seamless integration into sophisticated marine interiors, while producing deep, controlled low frequencies that enrich every listening experience at sea. Crafted with premium marine-grade materials, it withstands UV rays, salt, and moisture, guaranteeing lasting performance in the harshest conditions. The fine mesh magnetic grille provides a sleek, ultra-low-profile finish, blending perfectly into the yacht’s architecture. For those who expect both uncompromising sound and timeless style, the PORTOFINO 100 S4W redefines marine audio excellence.
Highlights
Key features
- Powerful low frequencies – deep, impactful bass that enhances every voyage.
- Flush-mount design – ultra-low-profile installation for seamless integration.
- Fine mesh magnetic grille – elegant look with secure, tool-free attachment.
- Premium marine-grade materials – built to resist UV, salt, and moisture.
- 10-inch subwoofer performance – engineered for rich, controlled bass in open-air environments.
- Luxury-focused design – crafted to blend perfectly into exclusive yacht interiors.
- Benchmark value – premium sound and design with the best price-to-performance ratio in its class.
- IP 65 CERTIFICATION
- WATER JET TESTED
- UV RESISTANT
- SALT FOG TESTED
More info
WHERE ITALIAN
ELEGANCE MEETS
MARINE AUDIO
EXCELLENCE
PREMIUM MARINE SOUND, FLUSH-MOUNTED ELEGANCE
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.
Portofino 65 XW
6.5″ Flush-Mount Marine Coaxial
150 W
Featuring a coaxial architecture with a centrally mounted tweeter on a rigid bridge, ensuring wide dispersion and smooth off-axis frequency response.
Portofino 77 XW
6.5″ Flush-Mount Marine Coaxial
200 W
Featuring a coaxial architecture with a centrally mounted tweeter on a rigid bridge, ensuring wide dispersion and smooth off-axis frequency response.
Portofino 100 S2W
10” 2Ω Flush-Mount Marine Subwoofer
500 W
Long-excursion woofer with optimized motor and suspension systems for deep, impactful bass in infinite-baffle setups.
Portofino 100 S4W
10” 4Ω Flush-Mount Marine Subwoofer
500 W
Long-excursion woofer with optimized motor and suspension systems for deep, impactful bass in infinite-baffle setups.
THE ITALIAN WAY OF DESIGN AND SOUND
DESIGNED FOR THE FINEST YACHTS
• 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
BUILT FOR REAL MARINE DUTY
• 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
LUXURY THAT PERFORMS
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.
PURE MINIMALISM. MAXIMUM IMPACT.
PORTOFINO’s magnetic grille system not only allows for fast service access , it creates a floating, frameless look that complements any surface or material.
Technologies
IP 65 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
13
| Size mm (in.) | 250 (10) |
| Power Handling - Continuous W | 250 |
| Power Handling - Peak W | 500 |
| Impedance Ohm | 4 |
| Depth mm (in.) | 174 (6.85) |
| Voice Coil Type | single |
| No Filter Component | SUBWOOFER |
| Voice Coil Ø | 50 (2) |
| Magnet size D x d x h mm (in.) | 140 x 60 x 30 (5.51 x 2.36 x 1.18) |
| Weight of one component kg (lb.) | 5,1 (11.24) |
| Magnet | High density flux ferrite |
| Cone | Polypropylene with UV inhibitors |
| Xmech mm (in.) | 16.30 (0.64) |
Electro-acoustic Specs
13
| D mm | 210 |
| Xmax mm | 12.30 |
| Re Ohm | 2.1 |
| Fs Hz | 43 |
| Le mH | 0.46 |
| Vas I | 30.46 |
| Mms g | 75.60 |
| Cms mm/N | 0.18 |
| BL T*m | 8.30 |
| Qts | 0.60 |
| Qes | 0.63 |
| Qms | 12.30 |
| Spl dB | 88.5 |
Physical Specs
6
| A | 319 mm | 12.56 in. |
| B | 271.3 mm | 10.68 in. |
| C | 174 mm | 6.85 in. |
| D | 11.6 mm | 0.46 in. |
| U | 291 mm | 0.11 in. |
| V | 5.5 mm | 0.22 in. |
Frequency response
Visual spec reference.
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