Alpine MRN-W12S4-IB-LB Marine 12" Infinite Baffle Single 4 Ohm Subwoofer – Black
Deep Marine Bass Built for Life on the Water
Bring powerful, high-impact bass to your marine audio system with the Alpine MRN-W12S4-IB-LB. This 12-inch infinite baffle marine subwoofer is engineered to deliver rich, accurate low frequencies while withstanding the harsh conditions of marine environments. With a sleek black finish, rugged construction, and high-output performance, it is the perfect upgrade for boats, pontoons, and outdoor audio installations.
Designed for infinite baffle applications, the MRN-W12S4-IB-LB delivers impressive bass performance without requiring a traditional enclosure, helping maximize installation flexibility while maintaining clean, controlled sound. The single 4-ohm voice coil makes system integration simple and provides compatibility with a wide range of marine amplifiers.
Key Features
- 12-inch marine infinite baffle subwoofer
- Single 4-ohm voice coil design
- 600 watts RMS power handling
- 1,800 watts peak power handling
- Carbon fiber hybrid cone for rigidity and reduced distortion
- Marine-grade construction designed for outdoor environments
- UV-resistant materials for long-lasting durability
- Salt and fog resistant components
- Black finish with integrated marine styling
- Designed for boats, yachts, pontoons, and other marine audio systems
Powerful Bass Without the Bulk
The infinite baffle design allows the MRN-W12S4-IB-LB to produce deep, impactful bass without the need for a large subwoofer enclosure. This makes it an excellent choice for marine installations where space is limited but premium sound performance is still a priority.
Its 12-inch driver and rigid carbon fiber hybrid cone provide strong bass response with excellent control, helping your favorite music sound full and dynamic whether you're cruising, anchored, or entertaining guests.
Built for Marine Performance
Marine audio demands more than standard equipment. The MRN-W12S4-IB-LB is designed with materials and construction methods that help protect against moisture, sun exposure, and corrosion. Its durable design delivers dependable performance season after season while maintaining a clean, professional appearance.
Upgrade your boat’s sound system with the Alpine MRN-W12S4-IB-LB and experience deep, powerful bass engineered specifically for the water.
|
| Specification |
Details |
| Brand |
Alpine |
| Model |
MRN-W12S4-IB-LB |
| Product Type |
Marine Subwoofer |
| Subwoofer Size |
12 inches |
| Voice Coil |
Single Voice Coil (SVC) |
| Voice Coil Impedance |
4 Ohms |
| RMS Power Handling |
600 Watts |
| Peak Power Handling |
1,800 Watts |
| Frequency Response |
25 Hz - 150 Hz |
| Sensitivity |
86.0 dB (1 W/1 m) |
| Xmax |
20 mm |
| Voice Coil Diameter |
65 mm |
| Installation Type |
Infinite Baffle / Free Air |
| Sealed Enclosure |
Supported |
| Ported Enclosure |
Not Recommended |
| Cone Material |
Polypropylene and Carbon Fiber Parabolic Cone |
| Surround |
High Amplitude Multi-Roll (HAMR) Surround |
| Magnet Assembly |
Double Stacked Strontium Ferrite Magnet |
| Marine Protection |
IP66 Rated |
| Salt and Fog Resistance |
ASTM B117 Tested |
| UV Resistance |
ASTM G154 Tested |
| Grille Color |
Black |
| Grille Type |
Fixed, Non Removable |
| RGB Lighting |
Integrated RGB LED Optical Diffusion Lighting |
| RGB Connector |
4 Pin Waterproof Deutsch Connector |
| Speaker Connector |
2 Pin Waterproof Deutsch Connector |
| Recommended RGB Controller |
Alpine KTX-MRN-LED-RF |
| Cutout Diameter |
10-13/16 in. (275 mm) |
| Mounting Depth |
7-9/32 in. (185 mm) |
| Grille Protrusion |
2-11/16 in. (68 mm) |
| Outer Grille Diameter |
12-3/4 in. (324 mm) |
| Recommended Subsonic Filter |
25 Hz |
| Included Hardware |
6 Mounting Screws and Hex Key |
| Application |
Marine and Boat Audio Systems |
| Recommended Amplification |
Dedicated Marine Mono Amplifier |
| Primary Design |
High Output Infinite Baffle Marine Subwoofer |
