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Alpine MRN-W12S4-IB-LW 12" 4-Ohm Infinite Baffle Marine RGB Subwoofer - White - Each
Product Description
Product Description
Alpine MRN-W12S4-IB-LW 12" 4-Ohm Infinite Baffle Marine RGB Subwoofer - White - Each - 2026
The Alpine MRN-W12S4-IB-LW brings deep, controlled bass to your boat with 600 watts RMS of power handling, long-excursion performance, integrated RGB lighting, and a marine-ready IP66-certified design. Built on Alpine’s legendary R-Series platform, this 12-inch white subwoofer is designed to deliver the kind of low-end impact that can make your entire marine audio system feel more complete.
Powerful Bass Built for the Water
Why settle for thin, distant bass when you can add serious low-frequency impact to your marine system? The MRN-W12S4-IB-LW combines 600 watts RMS and 1,800 watts peak power handling with a 20 mm Xmax design that moves plenty of air.
The result is fuller bass with more weight and control. Kick drums have greater impact, bass lines sound deeper, and your music gets a stronger foundation whether you're cruising, relaxing at anchor, or enjoying time at the dock.
Built on Alpine's R-Series Platform
The MRN-W12S4-IB-LW uses an ultra-rigid polypropylene and carbon-fiber parabolic cone paired with Alpine's High Amplitude Multi-Roll (HAMR) surround. A 65 mm single voice coil and double-stacked strontium ferrite motor provide the structure behind its powerful performance.
With a 25 Hz–150 Hz frequency response and 86.0 dB sensitivity, this subwoofer is designed to add substantial low-end energy without losing control as the volume increases.
Designed for Infinite-Baffle Applications
One of the biggest advantages of the MRN-W12S4-IB-LW is its focus on infinite-baffle installations. Instead of requiring a traditional enclosure, it uses the open space behind the mounting panel, which can help preserve valuable storage space onboard.
It is also compatible with sealed enclosures when properly engineered, while ported enclosures are not recommended. That makes it a flexible option when planning a marine audio system around the available space.
Marine-Ready Protection
Life on the water can be tough on audio equipment, so the MRN-W12S4-IB-LW is built with marine conditions in mind. Its IP66-certified dust- and water-resistant assembly is tested for salt, fog, UV exposure, and vessel water-tightness.
The subwoofer also uses waterproof Deutsch connectors for both the speaker and RGB lighting connections. With its marine-focused construction, it is designed to handle the demanding environment that comes with regular use on the water.
Integrated RGB Lighting
The fixed white grille gives the MRN-W12S4-IB-LW a clean look that works especially well with white fiberglass, light-colored interiors, and modern marine finishes. But the grille does more than protect the subwoofer.
Integrated 4-pin RGB LED optical-diffusion lighting adds a smooth glow after dark. Want a subtle accent while relaxing at the dock? Or a more energetic look while entertaining? The RGB lighting gives you the flexibility to change the atmosphere.
A compatible controller and remote are required, with the Alpine KTX-MRN-LED-RF LED Controller & Remote available separately.
White Marine Design
The white finish gives this 12-inch subwoofer a refined appearance while keeping the overall design suited to a marine environment. Its fixed, non-removable white grille measures 12-3/4 inches in diameter and protrudes 2-11/16 inches.
The mounting cutout measures 10-13/16 inches, while mounting depth is 7-9/32 inches, giving you the key dimensions needed when planning your system.
Complete Your Alpine Marine Audio System
The MRN-W12S4-IB-LW can be paired with other Alpine marine components to create a more powerful and balanced setup. Pair it with the M-A110V 5-Channel Marine Amplifier for a streamlined system capable of powering speakers and a subwoofer, or choose the M-A120M 1200-Watt Mono Marine Amplifier for dedicated bass power and the ability to run one or two compatible subwoofers.
Add the optional KTX-MRN-LED-RF controller and remote, and the integrated RGB lighting becomes another part of your overall marine audio experience.
The Alpine MRN-W12S4-IB-LW is a strong choice when you want your marine system to deliver more than just background music. Its 12-inch design, 600-watt RMS power handling, 20 mm Xmax, infinite-baffle optimization, and marine-ready construction give your system a serious low-frequency foundation. Add the integrated RGB lighting and clean white grille, and you get a subwoofer that looks just as purposeful as it sounds.
Frequently Asked Questions
- What is the power handling of the Alpine MRN-W12S4-IB-LW? The subwoofer handles 600 watts RMS and 1,800 watts peak power.
- What impedance is the Alpine MRN-W12S4-IB-LW? It features a 4-ohm single voice coil.
- Is the Alpine MRN-W12S4-IB-LW designed for infinite-baffle use? Yes. It is optimized for infinite-baffle applications and is also compatible with sealed enclosures.
- Does the Alpine MRN-W12S4-IB-LW have RGB lighting? Yes. It features an integrated 4-pin RGB LED optical-diffusion grille.
- What level of water and dust protection does it have? The subwoofer has an IP66-certified dust- and water-resistant assembly and has been tested for salt, fog, UV exposure, and vessel water-tightness.
Features & Specs
Features & Specs
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Documents
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Warranty
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Product Description
Product Description
Alpine MRN-W12S4-IB-LW 12" 4-Ohm Infinite Baffle Marine RGB Subwoofer - White - Each - 2026
The Alpine MRN-W12S4-IB-LW brings deep, controlled bass to your boat with 600 watts RMS of power handling, long-excursion performance, integrated RGB lighting, and a marine-ready IP66-certified design. Built on Alpine’s legendary R-Series platform, this 12-inch white subwoofer is designed to deliver the kind of low-end impact that can make your entire marine audio system feel more complete.
Powerful Bass Built for the Water
Why settle for thin, distant bass when you can add serious low-frequency impact to your marine system? The MRN-W12S4-IB-LW combines 600 watts RMS and 1,800 watts peak power handling with a 20 mm Xmax design that moves plenty of air.
The result is fuller bass with more weight and control. Kick drums have greater impact, bass lines sound deeper, and your music gets a stronger foundation whether you're cruising, relaxing at anchor, or enjoying time at the dock.
Built on Alpine's R-Series Platform
The MRN-W12S4-IB-LW uses an ultra-rigid polypropylene and carbon-fiber parabolic cone paired with Alpine's High Amplitude Multi-Roll (HAMR) surround. A 65 mm single voice coil and double-stacked strontium ferrite motor provide the structure behind its powerful performance.
With a 25 Hz–150 Hz frequency response and 86.0 dB sensitivity, this subwoofer is designed to add substantial low-end energy without losing control as the volume increases.
Designed for Infinite-Baffle Applications
One of the biggest advantages of the MRN-W12S4-IB-LW is its focus on infinite-baffle installations. Instead of requiring a traditional enclosure, it uses the open space behind the mounting panel, which can help preserve valuable storage space onboard.
It is also compatible with sealed enclosures when properly engineered, while ported enclosures are not recommended. That makes it a flexible option when planning a marine audio system around the available space.
Marine-Ready Protection
Life on the water can be tough on audio equipment, so the MRN-W12S4-IB-LW is built with marine conditions in mind. Its IP66-certified dust- and water-resistant assembly is tested for salt, fog, UV exposure, and vessel water-tightness.
The subwoofer also uses waterproof Deutsch connectors for both the speaker and RGB lighting connections. With its marine-focused construction, it is designed to handle the demanding environment that comes with regular use on the water.
Integrated RGB Lighting
The fixed white grille gives the MRN-W12S4-IB-LW a clean look that works especially well with white fiberglass, light-colored interiors, and modern marine finishes. But the grille does more than protect the subwoofer.
Integrated 4-pin RGB LED optical-diffusion lighting adds a smooth glow after dark. Want a subtle accent while relaxing at the dock? Or a more energetic look while entertaining? The RGB lighting gives you the flexibility to change the atmosphere.
A compatible controller and remote are required, with the Alpine KTX-MRN-LED-RF LED Controller & Remote available separately.
White Marine Design
The white finish gives this 12-inch subwoofer a refined appearance while keeping the overall design suited to a marine environment. Its fixed, non-removable white grille measures 12-3/4 inches in diameter and protrudes 2-11/16 inches.
The mounting cutout measures 10-13/16 inches, while mounting depth is 7-9/32 inches, giving you the key dimensions needed when planning your system.
Complete Your Alpine Marine Audio System
The MRN-W12S4-IB-LW can be paired with other Alpine marine components to create a more powerful and balanced setup. Pair it with the M-A110V 5-Channel Marine Amplifier for a streamlined system capable of powering speakers and a subwoofer, or choose the M-A120M 1200-Watt Mono Marine Amplifier for dedicated bass power and the ability to run one or two compatible subwoofers.
Add the optional KTX-MRN-LED-RF controller and remote, and the integrated RGB lighting becomes another part of your overall marine audio experience.
The Alpine MRN-W12S4-IB-LW is a strong choice when you want your marine system to deliver more than just background music. Its 12-inch design, 600-watt RMS power handling, 20 mm Xmax, infinite-baffle optimization, and marine-ready construction give your system a serious low-frequency foundation. Add the integrated RGB lighting and clean white grille, and you get a subwoofer that looks just as purposeful as it sounds.
Frequently Asked Questions
- What is the power handling of the Alpine MRN-W12S4-IB-LW? The subwoofer handles 600 watts RMS and 1,800 watts peak power.
- What impedance is the Alpine MRN-W12S4-IB-LW? It features a 4-ohm single voice coil.
- Is the Alpine MRN-W12S4-IB-LW designed for infinite-baffle use? Yes. It is optimized for infinite-baffle applications and is also compatible with sealed enclosures.
- Does the Alpine MRN-W12S4-IB-LW have RGB lighting? Yes. It features an integrated 4-pin RGB LED optical-diffusion grille.
- What level of water and dust protection does it have? The subwoofer has an IP66-certified dust- and water-resistant assembly and has been tested for salt, fog, UV exposure, and vessel water-tightness.
