Gravity MG660-LBK 6.5" 2-Way Marine Speakers

The Gravity MG660-LBK is a pair of 6.5-inch two-way marine speakers designed for audio systems exposed to water, weather, and open-air use. It provides a practical replacement or upgrade option for boats, personal watercraft, and off-road vehicles that use a standard-size speaker location. The pair combines full-range speaker playback with integrated blue LED illumination.

These speakers are intended for listeners who want music in marine and outdoor vehicle applications without using conventional interior-only speakers. Their weather-resistant, waterproof-listed construction is made to handle heavy water splashes and outdoor conditions. The 6.5-inch format supports installation in many common OEM-style speaker positions, subject to verifying the actual opening and available mounting clearance.

The MG660-LBK uses a two-way speaker layout to cover both lower and higher portions of the audible range from each location. Gravity lists 350 watts of advertised power for the pair, though it does not publish an RMS rating or a power-rating test standard for this model. Match the speakers with a compatible marine or vehicle audio source and avoid relying on an unconfirmed continuous-power figure when selecting an amplifier.

Built-in blue LED lighting adds visual accent lighting around the speaker area for marine and outdoor installations. This makes the speakers suitable for systems where lighting is part of the overall vessel or powersports presentation. The lighting feature should be connected and protected according to the vehicle's electrical system requirements.

A low-profile design helps the MG660-LBK fit installations where rear-panel space is limited. It can be used as a direct replacement where fitment is confirmed, or as part of a larger system with a marine receiver, external amplifier, and additional speakers. Confirm mounting dimensions, wiring requirements, and speaker impedance before installation because detailed manufacturer installation specifications are not published for this SKU.

Key Features

• 6.5-Inch Size: Fits many standard marine and vehicle speaker locations.
• Two-Way Design: Combines full-range playback from each speaker location.
• Waterproof Listing: Intended for wet marine and outdoor environments.
• Weather Resistance: Built to handle water splashes and outdoor exposure.
• Blue LED Lighting: Adds illuminated styling to compatible installations.
• Low-Profile Form: Helps support installations with limited mounting space.

Design & Installation

The MG660-LBK is a white marine speaker pair with a slim, low-profile exterior intended for exposed recreational-vehicle environments. Its listed waterproof and weather-resistant characteristics are intended for marine, watercraft, and off-road applications. No IP rating, cone material, grille material, or basket material has been published for the exact UPC-listed product.

Before mounting, compare the existing opening, screw pattern, and rear clearance with the actual speakers, since detailed cutout and mounting-depth figures are not published. Connect each speaker with correct positive and negative polarity to a compatible audio system, and plan separate protected wiring as needed for the LED lighting. These speakers are best used in boats, marine watercraft, and off-road vehicles where a 6.5-inch OEM-style replacement size is appropriate.