🔊 JL Audio M310IB-S-Gm-4 Marine Subwoofer – Built for Bold, Open-Air Bass
When you're ready to bring powerful bass to your boat, the JL Audio M310IB-S-Gm-4 marine subwoofer delivers. This 10-inch subwoofer is engineered for infinite-baffle installations, meaning you can mount it directly in open-air spaces with no enclosure required.
It’s perfect for boats where sealed boxes aren’t practical. The classic gunmetal sport grille gives it a rugged yet stylish look that matches many JL Audio speakers. Whether you're relaxing dockside or cruising open waters, this marine subwoofer enhances your entire listening experience.
🌊 Built for Harsh Marine Conditions
Marine life isn’t easy on electronics. That’s why the M310IB-S-Gm-4 is built to last. JL Audio uses a marine-grade polymer basket that resists corrosion and warping. The sealed motor structure prevents water intrusion and keeps performance consistent.
The polypropylene cone is UV-treated to withstand direct sunlight. Stainless steel mounting hardware resists rust. Everything meets ASTM B117 for salt spray and ASTM D4329 for UV exposure. You can trust it on lakes, rivers, or saltwater bays.
🔊 10-Inch Subwoofer, Free-Air Design
This is not your typical marine subwoofers. The infinite-baffle (free-air) design removes the need for a dedicated box. You can install it directly into bulkheads, seat bases, or rear compartments. That saves space and simplifies wiring.
Its 175W RMS power handling gives it plenty of punch. With 4-ohm impedance, it pairs with most marine-grade amplifiers. You get deep, accurate bass at any volume level.
🎨 Rugged Gunmetal Sport Grille
Appearance matters, too. The sport-style grille on this subwoofer is finished in gunmetal, offering a modern look with aggressive lines. It complements JL Audio’s matching speaker series and adds a visual pop to your boat’s layout.
The grille is UV-resistant, so it won't fade or yellow over time. Plus, it's tough enough to handle accidental kicks or bumps.
🧰 Easy Installation and Versatile Pairing
Thanks to its infinite-baffle design, the M310IB-S-Gm-4 offers easy installation. You don’t need to build or buy an enclosure. Just cut a standard 10-inch hole, connect the wiring, and mount it securely.
It works great with JL Audio marine amplifiers and other subwoofer models in the M3 and M6 lines.
🔗 More JL Audio Marine Subwoofers
Want to compare options? Browse our Marine Subwoofers Collection. We carry LED-equipped models, different grille finishes, and various power ranges to match your full system.
☀️ Add Protection with Marine Window Tinting
Boat electronics are vulnerable to UV damage. Protect your gear with expert window tinting from Window Tint Delaware. Tinting reduces glare, lowers cabin temperatures, and protects your dashboard and wiring.
Tint film also helps preserve speakers and subwoofers from premature aging caused by the sun.
📍 Installed by the Pros at Audio Jam
Come to Audio Jam in Bear, Delaware, for professional marine audio installation. We use certified marine wire, weatherproof connectors, and corrosion-resistant techniques to ensure durability.
📍 227 Governor Place, Bear, DE 19701
📞 (302) 832-2868 | 🕒 Monday–Saturday: 10 AM–6 PM
🎵 Subwoofer Bass Without the Box
JL Audio’s M310IB-S-Gm-4 marine subwoofer is perfect for anyone who wants more bass without more bulk. It’s clean, simple, and effective. You’ll enjoy deep, booming lows that bring your entire system to life.
Its smart engineering, reliable materials, and bold appearance make it a perfect choice for today’s boaters.
❓ Frequently Asked Questions (FAQ)
Q1: Does this subwoofer require a sealed box?
No. It’s designed for infinite-baffle use. No enclosure is needed for operation.
Q2: Can I run this with my factory marine stereo?
Yes, but for best performance, pair it with a marine-rated subwoofer amplifier.
Q3: Will it match other JL Audio speakers?
Yes. The gunmetal sport grille matches JL Audio’s M3 and M6 marine speakers
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