Alpine 12-Inch Marine Subwoofer with Integrated RGB Lighting in Black - MRN-W12S4-IB-LB

Alpine MRN-W12S4-IB-LB 12-Inch Marine Subwoofer with Integrated RGB Lighting in Black

Built for Marine Performance
Bring powerful sound to the water with these 8.8-inch black marine speakers. Designed as a 2-way coaxial system, they deliver a wide frequency response from 35 Hz to 20 kHz for crisp highs, detailed mids and satisfying low-end presence. With 150W RMS and 450W peak power handling, these marine audio speakers are made to keep up with energetic listening on boats, docks and other outdoor environments.

Durable Construction for Harsh Conditions
These black marine speakers are engineered for long-lasting reliability in demanding settings. The reinforced polypropylene and carbon-fiber cone construction works alongside a double linear-rolled Santoprene marine-grade surround for dependable performance, while the rigid die-cast aluminum frame includes cooling ports to help support strong output. An IP66-certified dust- and water-resistant assembly adds another layer of protection, and ASTM B117 salt and fog resistance plus ASTM G154 UV resistance help the speakers stand up to the elements.

Easy Integration with Marine Audio Setups
The 8-3/4-inch speaker size and 7-9/16-inch cutout diameter make these marine speakers a great fit for many custom audio installations. A 2-pin waterproof Deutsch connector helps simplify speaker connection, while the integrated 2-way passive crossover supports balanced sound across the system. Each pair also includes mounting hardware and waterproof plugs, making it easier to complete a marine speaker installation with confidence. Integrated RGB LED optical-diffusion grilles add a custom look, with controller and remote support available through a compatible LED controller sold separately.

Key Features

• Premium 12" marine subwoofer sold individually
• Built on Alpine’s legendary R-Series platform
• Alpine Signature Sound optimized for outdoor listening
• 600W RMS / 1,800W peak power handling
• 20 mm Xmax for powerful bass impact
• 4-ohm single voice coil
• Optimized for infinite-baffle installations
• Compatible with sealed enclosures; ported enclosures not recommended
• Ultra-rigid polypropylene and carbon-fiber parabolic cone
• High Amplitude Multi-Roll (HAMR) surround
• Double-stacked strontium ferrite motor
• IP66-certified dust- and water-resistant assembly
• Salt, fog, UV, and vessel water-tightness tested
• Integrated 4-pin RGB LED optical-diffusion grille (Controller and Remote Required)

Features

• Bass That Carries Across the Water
  Out on the water, bass has to work harder to be heard and felt. The MRN-W12S4-IB-LB combines 600 watts RMS of power handling with a long-excursion design that moves more air for stronger low-frequency impact. Kick drums hit with greater weight, bass lines feel fuller, and the entire system gains the depth that marine speakers alone cannot provide. Whether cruising at speed, relaxing at anchor, or entertaining at the dock, the music sounds bigger, more energetic, and more complete throughout the boat.
• Protected for Life on the Water
  The MRN-W12S4-IB-LB is built for the conditions that come with life on the water. IIts IP66-certified dust- and water-resistant construction helps protect against dust and powerful water spray, while salt, fog, and UV resistance support lasting durability in demanding marine environments. Separate waterproof connections protect the speaker signal and RGB lighting wiring, with both mating connectors included for a clean, secure installation. A fixed black and gray grille protects the woofer and maintains a bold, polished appearance season after season.
• Made for Infinite-Baffle Installations
  The MRN-W1254-IB-LB is optimized for infinite-baffle marine installations, using the open space behind the mounting panel instead of requiring a traditional subwoofer enclosure. This helps preserve valuable onboard storage while adding powerful, full- bodied bass to the system. Its flexible design also supports use in a properly engineered sealed enclosure when the installation calls for one. Ported enclosures are not recommended, helping keep system planning simple and performance consistent.
• Powerful Bass That Stays Controlled
  Built on Alpine's legendary R-Series platform, the MRN-W1254-IB-LB uses an ultra-rigid polypropylene and carbon-fiber parabolic cone with a high-excursion suspension to keep bass powerful and controlled as the volume rises. A large 65 mm voice coil, double- stacked magnet, and integrated airflow help manage heat during extended playback. Together, these technologies deliver bass that hits with authority, starts and stops cleanly, and gives the music a deep, commanding foundation whether cruising at speed or entertaining at the dock.
• Distinctive Style with RGB Lighting
  A fixed black grille gives the MRN-W1254-IB-LB a bold, refined presence that complements dark interiors, black trim, and modern marine finishes. Integrated 4-pin RGB LED lighting shines through an optical-diffusion grille for a smooth, even glow after sunset, creating anything from subtle accent lighting to a more energetic atmosphere onboard. LED operation requires a compatible controller and remote, sold separately. Pair the subwoofer with Alpine's KTX-MRN-LED-RF LED Controller & Remote for convenient lighting control.