MRN-S77-LB
7.7-Inch Black Marine Coaxial Speakers with Integrated RGB Lighting and IP66 Waterproof Design
$699.95
MRN-S77-LB
7.7-Inch Black Marine Coaxial Speakers with Integrated RGB Lighting and IP66 Waterproof Design
$699.95
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Product Overview
Built for powerful listening on open water, the MRN-S77-LB combines 125W RMS power handling, controlled midbass, clear outdoor projection, and Alpine Signature Sound in an IP66-rated black design with RGB lighting.
Features
- Premium 7.7" 2-way marine coaxial speaker set
- Alpine Signature Sound optimized for open-air listening
- 125W RMS power handling
- 7.5 mm Xmax for controlled midbass response
- 45 Hz–20 kHz rated frequency response
- Reinforced polypropylene and carbon-fiber cone
- 1" hydrophobic dome tweeter with outdoor-directivity waveguide
- Integrated 2-way passive crossover
- IP66-certified dust and water-resistant assembly
- Salt, fog, UV, and vessel water-tightness tested
- Integrated grille drain for lateral installations
- Integrated RGB LED optical-diffusion grille
- Single waterproof 6-pin speaker and RGB LED connection
- Compatible with KTX-MRN-LED-RF LED Controller & Remote
- Speakers also available in White (MRN-S77-LW)
Tech Specs
Color: Black
Speaker Type: 2-way coaxial
Power Handling: 125W RMS
Nominal Impedance: 4 ohms
Frequency Response: 45 Hz–20 kHz
Sensitivity: 90 dB (1W/1m)
Xmax: 7.5 mm
Speaker Size: 7-11/16" (196 mm)
Tweeter: 1" (25 mm) hydrophobic Teteron-dome neodymium tweeter
Cone Material: Reinforced polypropylene and carbon-fiber construction
Surround: Double linear-rolled Santoprene marine-grade surround
Motor Structure: Ferrite magnet
Crossover: Integrated 2-way passive crossover
Frame: Rigid die-cast aluminum with cooling ports
Cutout Diameter: 6-5/16" (160 mm)
Mounting Depth: 3-5/16" (84 mm)
Grille Protrusion: 1-7/8" (48 mm)
Outer Grille Diameter: 7-13/16" (198 mm)
Protection Rating: IP66-certified dust- and water-resistant assembly
Salt and Fog Resistance: ASTM B117 tested
UV Resistance: ASTM G154 tested
Speaker & RGB Connection: 6-pin waterproof Deutsch connector
Lighting: Integrated 4-pin RGB LED optical-diffusion grille
LED Control: Controller and remote required
Compatible LED Controller: KTX-MRN-LED-RF, sold separately
Included Hardware: 12 mounting screws, one hex-drive drill bit, two waterproof 6-pin speaker/LED plugs
Owner's Manual
MRN-S77-LB Owner's Manual
MRN-S77-LB Owner's Manual
Powerful Sound Beyond the Shore
Wind, waves, and engine noise can make ordinary speakers lose impact and sound thin once the boat is underway. The MRN-S77-LB is tuned for full, balanced sound with controlled midbass and natural vocal detail in open-air conditions. Its 7.5 mm Xmax woofer helps deliver consistent performance, while 125 watts RMS of power handling supports energetic listening as the volume rises. A pro-audio-style tweeter waveguide helps direct crisp detail through open-air spaces. The result is lively, balanced sound that carries across the boat, keeping music clear and engaging whether cruising, anchored, or relaxing at the sandbar.
Built for Life on the Water
Marine speakers face far more than an occasional splash. The MRN-S77-LB features an IP66-rated front assembly that helps protect against dust and powerful water spray, along with salt, fog, and UV resistance for added protection in demanding coastal conditions. A corrosion-resistant plastic speaker basket, marine-ready materials, and a single waterproof 6-pin speaker and LED connection help support reliable performance in demanding marine environments. The result is lasting protection designed for real-world boating and dependable performance through season after season on the water.
Designed to Be Seen
A distinctive black grille gives the MRN-S77-LB a bold, premium appearance that complements dark hulls, modern interiors, and contrasting marine finishes. Integrated 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 speakers with Alpine's KTX-MRN-LED-RF LED Controller & Remote for convenient lighting control.
Clarity for Open-Air Listening
Marine sound has to project without becoming harsh or tiring. The MRN-S77-LB uses a reinforced polypropylene and carbon-fiber cone to keep midbass tight and controlled as the volume rises. A hydrophobic 1" (25 mm) dome tweeter resists moisture, while its pro-audio-style waveguide helps direct high-frequency detail through open-air spaces. An integrated 2-way crossover blends both drivers for balanced Alpine Signature Sound, keeping vocals, instruments, and percussion distinct from the helm to the stern, even as wind and engine noise increase.
Build Your Ideal Alpine Marine System
Creating the ideal Alpine Marine system means bringing the source, amplification, speakers, and bass together around the way you listen on the water. Start with an Alpine Marine receiver, then add amplification that matches your system goals. The M-A60F 4-Channel Marine Amplifier delivers dedicated power for four speakers, while the M-A110V 5-Channel Marine Amplifier can power four speakers and a subwoofer from one compact solution. For deeper, more commanding bass, pair the speakers with a 10-inch or 12-inch Alpine Marine subwoofer and the dedicated M-A120M Mono Marine Amplifier. Together, each component contributes to clear, balanced Alpine Signature Sound from bow to stern.
MRN-S77-LB
