JL Audio M3-770X-C-Gw
M3 Series 7.7" 2-Way Marine Coaxial Speakers - White Classic Grilles
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Elevate Your Boat’s Audio with JL Audio M3-770X-C-Gw 7.7” Marine Speakers
The JL Audio M3-770X-C-Gw 7.7-inch marine coaxial speakers are designed to deliver rich, full-range sound that cuts through the wind and waves with clarity and depth. Whether you're anchored at a sandbar or cruising full throttle, these speakers offer stunning audio quality backed by durable construction made for life on the water. With their crisp white classic grilles and premium build quality, the M3-770X-C-Gw speakers bring style and sonic excellence to any boat.
Key Features
| Category | Description |
|---|---|
| 7.7-Inch Marine Coaxial Speakers | Oversized design delivers superior loudness and bass depth |
| 2-Way Speaker System | Includes 0.75” silk dome tweeter for smooth, accurate highs |
| Marine-Rated Construction | Weather-resistant materials resist UV, saltwater, and moisture |
| Classic White Grilles (C-Gw) | Stylish, UV-resistant design matches any boat aesthetic |
| 70W RMS / 225W Peak Power Handling | High efficiency works well with various amplifiers or head units |
| 4-Ohm Impedance | Easily integrates with most marine sound systems |
| Made in the USA | Built in JL Audio’s Miramar, Florida facility to exacting standards |
Larger Size for Louder, Deeper Sound
- ✔ Oversized 7.7-inch woofer delivers more output and deeper bass
- ✔ Ideal for open-air listening at cruising or anchor
- ✔ Superior cone excursion allows clear, rich low-end response
Precision-Engineered 2-Way Design
- ✔ 0.75-inch silk dome tweeter for smooth, fatigue-free highs
- ✔ Integrated coaxial layout ensures balanced sound from one speaker
- ✔ Clean treble, detailed mids, and bold bass in one rugged package
Built for Harsh Marine Conditions
- ✔ IP65-rated for resistance to water, salt, UV, and vibration
- ✔ Polypropylene cones and synthetic rubber surrounds for durability
- ✔ Classic white grille resists sun fading and corrosion
High-Efficiency Performance for Any System
- ✔ Optimized for strong output with moderate amplifier power
- ✔ Compatible with head units and dedicated marine amps
- ✔ Maintains bass depth and clarity at all volume levels
Timeless Classic Grille Design
- ✔ Clean, white aesthetic complements all boat styles
- ✔ Seamlessly integrates with JL Audio’s M3 speaker family
- ✔ Durable construction for multi-season marine use
Why Choose the JL Audio M3-770X-C-Gw?
If you're looking to upgrade your boat’s sound with premium speakers that can handle the marine environment while delivering stunning audio quality, the M3-770X-C-Gw is the answer. These speakers are engineered for larger boats, louder volumes, and better bass — all without requiring a bulky enclosure. Their stylish design and rugged durability make them a perfect choice for boaters who want more from their sound system, without compromising on reliability or looks.
What’s in the Box?
- 2 x JL Audio M3-770X-C-Gw 7.7-Inch Marine Coaxial Speakers
- 2 x Classic White Grilles (pre-installed)
- Mounting Screws and Hardware
- User Manual
- JL Audio Decals
Specifications
| Specification | Details |
|---|---|
| Speaker Size | 7.7 inches |
| Power Handling (RMS) | 70 watts |
| Peak Power Handling | 225 watts |
| Frequency Response | 45 Hz – 25,000 Hz |
| Impedance | 4 ohms |
| Sensitivity | 90.5 dB @ 1W/1m |
| Mounting Depth | 3.32 inches (84 mm) |
| Cutout Diameter | 6.25 inches (159 mm) |
| Grille Style | Classic White (C-Gw) |
| Weather Rating | IP65 (marine certified) |
Frequently Asked Questions (FAQ)
| Q: Are these speakers loud enough for open-deck use? | A: Yes! With their oversized 7.7-inch woofers, the M3-770X-C-Gw speakers deliver powerful, clear sound perfect for open-air environments. |
| Q: Do I need a separate amplifier to run these? | A: Not necessarily. While they’ll sound even better with an amplifier, these high-efficiency speakers perform very well with head units alone. |
| Q: Are they truly marine-grade? | A: Absolutely. These speakers are built with UV, salt, and moisture-resistant materials, and are tested to IP65 marine standards. |
| Q: What’s the benefit of the larger 7.7” size? | A: The extra size allows for deeper bass and higher output, outperforming standard 6.5” speakers without requiring more power. |
| Q: Can I install these in factory speaker locations? | A: In some cases, yes — but check your cutout diameter and depth to confirm compatibility with existing openings. |
| Q: Do these come with grilles? | A: Yes, each speaker includes a pre-installed Classic White Sport Grille, ready to mount. |
Enhance Your Marine Sound — Order the JL Audio M3-770X-C-Gw Today!
Step up to crisp highs, deep bass, and robust marine-grade performance with the JL Audio M3-770X-C-Gw 7.7” marine coaxial speakers. Built for the open water — and built to impress.
FAQ
Do products purchased from San Diego Car Stereo come with a warranty?
Yes, all products come with a 1-year manufacturer warranty unless otherwise stated. This covers any defects excluding physical damage.
Are these products brand new?
Yes, every product we sell is 100% brand new, unused, and comes in original manufacturer packaging unless clearly marked otherwise.
Do you offer installation services?
Yes, we offer professional installation services at both of our San Diego Car Stereo locations. Our expert technicians have over 50 years of combined experience to install all of your car, marine, or offroad audio needs. Stop by or give us a call to schedule an appointment to get a quote in person.