JL Audio M3 Series 7.7″ Marine Coaxial Speakers w/Grey Metallic Sport Grilles w/RGB LED Lighting – M3-770X-S-Gm-i
$449.99 $404.99
M3 Series 7.7" Marine Coaxial Speakers with Grey Metallic Sport Grilles with RGB LED Lighting – M3-770X-S-Gm-i
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Optimized for moderate power systems, M3 marine speakers are designed to produce powerful, smooth sound that is several steps beyond common marine speakers.
Features:
- Amazing fidelity and affordability in marine settings
- Built-in RGB LED lighting
- Exceeds international standards for salt fog and UV exposure
- 3-Year Warranty
Built-in RGB LED Lighting
Multicolor LEDs produce a vibrant accent glow.
DMA-Optimized Woofers
Proprietary motor, suspension and cone modeling systems are employed, resulting in reduced distortion, improved transient performance and stellar bass sound quality.
Pure Silk Tweeters
The treated silk dome design is chosen for its lightness, damping properties and smooth response characteristics to deliver superior output capability with crystal-clear, high-frequency detail.
Integrated Tweeter Filters
Each speaker includes a built-in second-order, high-pass tweeter filter with a solid-state protection circuit to minimize the possibility of tweeter failure.
Power Versatility
Designed to benefit from operation with quality amplification, M3 marine speakers are also suitable for use with standard marine head-unit power.
Real Marine Duty
For long-term use, all models are built to withstand saltwater marine environments and deliver years of listening enjoyment.
In The Box:
- Two marine coaxial loudspeakers
- Two grilles (attached to speaker)
- Twelve stainless steel mounting screws
- Twelve stainless steel washers
- Mounting template
Specifications:
- Size: 7.7"
- Color: Gray Sport
- Physical Dimensions (Diameter): 7.7"
- Physical Dimensions (Depth): 4.27"
- Speaker Type: Coaxial
- Continuous Power Handling (RMS): 70w
- Sensitivity (SPL @ 1w/1m): 90.5 dB
- Frequency Response (+/- 3 dB): 45 Hz-25 KHz
- Nominal Impedance: 4 ohm
- Recommended Amplifier Power (RMS): 20-140 w/Channel
- LED Lighting: Yes – RGB
- LED Supply Voltage: 10-14.4 VDC
- LED Load Current @ 14.4 VDC (Max): 108 mA
- Cone Material: Injection-molded, mica-filled polypropylene
- Tweeter Type: Silk Dome
- Tweeter Size: 0.75"
- Speaker Connections: Spade Connectors
- Warranty: 3 Year
Mounting Dimensions
- Mounting Depth Clearance: 3.17"
- Frontal Grille Protrusion: 1.10"
- Bolt Hole Circle: 6.92"


⚓ Smooth Sailing Shipping
Enjoy FREE standard shipping on most orders over $250 within the continental U.S. (excl. heavy/oversized/hazardous items).
We ship via UPS, FedEx, and USPS . Orders are processed in 1–2 business days with typical delivery in 1–5 business days .
🧭 Track The Voyage
You’ll receive tracking info by email once your order ships. If your package is marked “delivered” but not received, please wait 48 hours then reach out to our team.
🛟 Hassle-Free Returns & Exchanges
Returns accepted within 30 days of delivery. Items must be unused and in original packaging.
- Mistaken or damaged cargo? We’ll handle return shipping.
- Changed your course? Return shipping is on you.
- Report defects or damage within 7 days for a free exchange.
💰 Anchor Your Refund
Refunds go back to your original payment method within 5–7 business days after inspection.
📨 Contact the Crew
Questions about your order? Drop anchor at sales@marineelec.com .