Hertz PORTOFINO 100 S4 10" 4-Ohm SVC Marine Subwoofer - White - Each

The Hertz PORTOFINO 100 S4 is a 10-inch marine subwoofer designed to deliver deep, controlled bass while complementing the refined styling of luxury yachts and premium marine interiors. With 250W RMS power handling, 500W peak power, and a 4-ohm single voice coil, it combines dynamic low-frequency performance with flexible system integration. Available in black (PORTOFINO100S4C) and white (PORTOFINO100S4W), the PORTOFINO 100 S4 features a low-profile flush-mount design and magnetic fine-mesh grille for a clean, screw-free finish. Its marine-focused construction is designed to withstand water exposure, UV radiation, and salt fog, making it suitable for demanding marine environments.

The PORTOFINO 100 S4 is built to add depth and impact to marine audio systems. Its 10-inch polypropylene cone, high-density flux ferrite magnet, and 2-inch voice coil support controlled low-frequency output for listening on the water.

10-Inch Marine Subwoofer

250W RMS Power Handling

500W Peak Power

4-Ohm Single Voice Coil

2-Inch Voice Coil

Sensitivity: 88.5 dB

Designed to integrate neatly into premium marine interiors, the PORTOFINO 100 S4 features a low-profile flush-mount architecture that maintains a clean, understated appearance. The magnetic fine-mesh grille attaches without visible screws, complementing modern yacht styling.

Low-Profile Flush-Mount Design

Magnetic Fine-Mesh Grille

Screw-Free Styling

Available in Black and White Finishes

The PORTOFINO 100 S4 uses marine-focused materials and testing standards to help withstand the challenges of life on the water. Its IP65 rating provides protection against water jets, while UV and salt-fog resistance support durability in exposed marine environments.

IP65 Water Protection

UV Resistance Tested to ASTM-D4329

Salt-Fog Resistance Tested to ASTM-B117

Polypropylene Cone With UV Inhibitors

High-Density Flux Ferrite Magnet

The PORTOFINO 100 S4 is designed for infinite-baffle applications, allowing installation without a dedicated subwoofer enclosure when the mounting environment is suitable. This can help preserve valuable onboard space while providing deep, controlled bass.

10-Inch Marine Subwoofer

4-Ohm Single Voice Coil Design

Infinite-Baffle Applications

Low-Profile Flush-Mount Architecture

Magnetic Fine-Mesh Grille

Black and White Finish Options

Size: 250 mm (10 Inches)

Power Handling: 250W RMS

Peak Power: 500W

Impedance: 4 Ohms

Voice Coil Type: Single Voice Coil

Voice Coil Diameter: 50 mm (2 Inches)

Mounting Depth: 174 mm (6.85 Inches)

Magnet: High-Density Flux Ferrite

Cone Material: Polypropylene With UV Inhibitors

Sensitivity: 88.5 dB

Weight: 5.1 kg (11.24 lbs)