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7.7" Marine Coaxial Speakers JL Audio M3 Sport Gunmetal, 70W RMS 4Ω, OEM M3-770X-S-Gm / 010-03066-00 (Pair)

JLM3-770X-S-GM

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£453.72 GBP
£453.72 GBP
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Product Specifications and Features

Genuine JL Audio M3-Series 7.7" marine coaxial speaker set with Gunmetal Sport grilles, engineered for high-output sound in open-air (infinite-baffle) boat installations.

OEM references: M3-770X-S-Gm / Garmin 010-03066-00. Supplied as a pair.

  • Continuous power handling: 70 W RMS (per channel)
  • Recommended amplifier power: 20–140 W RMS / channel
  • Nominal impedance: 4 Ω
  • Frequency response: 45 Hz – 25 kHz (±3 dB)
  • Efficiency: 90.5 dB @ 1 W / 1 m
  • Materials: injection-molded, mica-filled polypropylene woofer with synthetic rubber surround; 0.75" treated silk-dome tweeter
  • Built-in protection: 2nd-order high-pass tweeter filter with solid-state protection circuit
  • Mounting (each speaker): outer Ø 7.70" (196 mm); cutout Ø 6.25" (159 mm); mounting depth 3.17" (81 mm); Sport grille protrusion 1.10" (28 mm)
  • Lighting: non-illuminated model (no built-in RGB LEDs)

Before ordering: confirm cutout diameter, depth clearance, and that your amplifier power matches the recommended RMS range to avoid damage and ensure best performance.

Shipping Information

All orders ship from the UK. Orders placed Monday–Thursday before 12:00pm are processed same day. Orders placed Friday after 12:00pm through Sunday are processed the following Monday. Processing times vary by stock location.

Out of stock items can be back-ordered with a typical 3–4 week lead time.

If an item shows "Dispatch Available Today" and you order after 2pm UK time, processing begins the next business day.

All times are in UK BST.

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