Gravity

Gravity MG680-LW Marine Speakers - White

10oz

Weather-resistant 6.5-inch marine speakers that deliver 350 watts of peak power on the water or the dock.

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Overview

The Gravity MG680-LW marine speakers are 6.5-inch, 2-way units built for boats, docks, patios, and other environments where moisture, salt, and sun exposure would damage conventional speakers. Their water-resistant construction and UV-protected components ensure the drivers and housing hold up through seasons of outdoor use, while the white finish provides a clean look that matches most marine installations.

Under the grille, a 10-ounce magnet drives the speaker with up to 350 watts of peak power across a frequency response of 80 Hz to 20 kHz, covering bass-heavy music as well as vocals and highs with reasonable clarity. The 4-ohm impedance and 88 dB sensitivity make the MG680-LW compatible with a wide range of marine head units and amplifiers. An anti-resonant stamped basket minimizes vibration-induced distortion, which is particularly beneficial in boat installations where engine rumble and wave impact can introduce noise. Installation is straightforward with spade terminals and a standard 6.5-inch cutout, though the 60mm mounting depth should be verified against your available panel space before committing.

Key Features

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Spade speaker terminals for easy installations

Magnet: 10oz / Mounting depth: 60mm

UV Protection / Water resistant

Package Contents: 2x Gravity MG680-LW - White

Specifications

Type
2-Way Marine Speakers
Size
6.5 inch
Peak Power
350 Watts
Sensitivity
88 dB
Frequency Response
80–20 kHz
Impedance
4 ohms
Magnet
10 oz
Mounting Depth
60mm
Protection
UV Protection, Water Resistant
Terminals
Spade Speaker Terminals
Basket
Anti-Resonant Stamped Basket
Color
White

Pros & Cons

👍 Pros

  • UV protection and water resistance built for prolonged marine exposure
  • 350 watts peak power provides strong output for open-air listening
  • 88 dB sensitivity means they produce reasonable volume without a high-powered amp
  • Anti-resonant stamped basket reduces unwanted vibration and distortion
  • White finish blends with standard boat and dock aesthetics

👎 Cons

  • 60mm mounting depth may not fit thinner boat panels without modification
  • Peak power rating of 350 watts does not reflect continuous RMS handling, which is not specified
  • Spade terminals may require adapters for some marine stereo head units
  • 88 dB sensitivity is moderate and may need amplifier support in noisy open-water conditions

Frequently Asked Questions

They are water-resistant and UV-protected for marine environments, but they are not rated as fully waterproof — they should not be submerged.
The MG680-LW requires a mounting depth of 60mm, so verify that your boat's panels or enclosures can accommodate that measurement before purchasing.
Product listings should be checked for quantity, as marine speakers are sometimes sold individually and sometimes as a pair.
They use spade speaker terminals, which are common in marine and car audio installations and compatible with most aftermarket wiring harnesses.
With 350 watts peak power and 4-ohm impedance, a moderate marine amplifier in the 50–100 watt RMS per channel range would be a suitable match for clean, undistorted sound.