Alpine MRN-W10S4-IB-LW 10" 4-Ohm Infinite Baffle Marine RGB Subwoofer - White - Each

Alpine MRN-W10S4-IB-LW 10" 4-Ohm Infinite Baffle Marine RGB Subwoofer - White - Each - 2026

The Alpine MRN-W10S4-IB-LW brings deep, controlled bass to your boat in a compact 10-inch marine subwoofer design. Built on Alpine’s legendary R-Series platform, it combines 600W RMS power handling, 20 mm Xmax, marine-ready protection, and integrated RGB lighting for a subwoofer that delivers both performance and style.

Powerful Alpine Bass for Marine Audio

A good subwoofer adds the low-frequency depth that standard marine speakers simply cannot provide. With 600W RMS and 1,800W peak power handling, the MRN-W10S4-IB-LW is built to give your music more weight and impact.

Its 20 mm Xmax allows for substantial cone movement, helping produce stronger bass without losing control. Kick drums hit harder, bass lines sound fuller, and your entire marine audio system gets a more complete low-end foundation.

Built for Infinite-Baffle Applications

The MRN-W10S4-IB-LW is optimized for infinite-baffle installations, making use of the open space behind the mounting surface instead of requiring a traditional subwoofer box. That can be especially useful on a boat, where every bit of storage space matters.

It can also be used with a sealed enclosure when properly engineered, while ported enclosures are not recommended.

R-Series Construction for Controlled Bass

Underneath the fixed white grille, Alpine uses an ultra-rigid polypropylene and carbon-fiber parabolic cone designed to handle demanding marine listening. The High Amplitude Multi-Roll (HAMR) surround supports the subwoofer’s long-excursion performance, while the double-stacked strontium ferrite motor provides the power behind the cone.

With a 4-ohm single voice coil and a 65 mm voice-coil diameter, this subwoofer is designed to deliver the controlled performance expected from Alpine’s R-Series platform.

Ready for Life on the Water

Marine audio has to deal with far more than bumps and vibrations. The MRN-W10S4-IB-LW features an IP66-certified dust- and water-resistant assembly and has been tested for salt, fog, UV exposure, and vessel water-tightness.

Its construction is designed to handle the demanding conditions found around the water, while waterproof Deutsch connectors help protect both the speaker and RGB lighting connections.

Integrated RGB Lighting

Why settle for great sound when your subwoofer can add some visual style, too? The MRN-W10S4-IB-LW features an integrated 4-pin RGB LED optical-diffusion grille that creates an even glow across the fixed white grille.

RGB lighting operation requires a compatible controller and remote. The subwoofer works with the Alpine KTX-MRN-LED-RF LED Controller & Remote, sold separately, giving you control over the integrated lighting.

Clean White Marine Design

The fixed white grille gives the MRN-W10S4-IB-LW a clean look that fits naturally with white fiberglass, light-colored interiors, and modern marine finishes. Its 10-inch format also provides strong bass performance without taking up the space of a larger subwoofer.

The grille has an outer diameter of 10-27/32 inches, with a mounting depth of 6-3/4 inches and a cutout diameter of 9-1/16 inches.

Build your Marine Bass System

The MRN-W10S4-IB-LW includes waterproof connections for both audio and RGB lighting. The package also includes six mounting screws and a hex key, along with the waterproof speaker and RGB connectors.

For a complete Alpine marine audio setup, the subwoofer can be paired with the M-A110V 5-Channel Marine Amplifier or the M-A120M 1200-Watt Mono Marine Amplifier for dedicated bass power.

The Alpine MRN-W10S4-IB-LW is a strong choice when you want serious low-end performance without giving up valuable space onboard. Its R-Series construction, 600W RMS power handling, infinite-baffle design, IP66 protection, and integrated RGB lighting bring together the features that matter in a capable marine subwoofer. Add the right Alpine marine amplifier and optional RGB controller, and you have a system designed to deliver powerful bass and a clean look both day and night.

FAQs

1. What size is the Alpine MRN-W10S4-IB-LW? The MRN-W10S4-IB-LW is a 10-inch marine subwoofer sold individually.
2. How much power can the MRN-W10S4-IB-LW handle? It handles 600W RMS and 1,800W peak power.
3. Is the MRN-W10S4-IB-LW designed for infinite-baffle use? Yes. It is optimized for infinite-baffle applications and can also be used in a properly engineered sealed enclosure. Ported enclosures are not recommended.
4. Does the MRN-W10S4-IB-LW have RGB lighting? Yes. It features an integrated 4-pin RGB LED optical-diffusion grille. A compatible controller and remote are required.
5. What RGB controller works with the MRN-W10S4-IB-LW? The subwoofer is compatible with the Alpine KTX-MRN-LED-RF LED Controller & Remote, which is sold separately.