JL Audio M3 6.5-inch Marine Coaxial Speakers – Gunmetal Sports Grille (Pair)
Premium Marine Performance. Stealthy, High-End Aesthetic.
Give your boat a modern, custom look without sacrificing an ounce of acoustic quality. The JL Audio M3-650X-S-Gm speaker system pairs legendary crystal-clear audio with a striking, dark gunmetal finish. Designed to drop perfectly into standard 6.5-inch speaker cutouts, this system is the ideal upgrade for boaters who want to step away from traditional white speakers.
The multi-spoke, gunmetal sports grille adds an aggressive, athletic accent that beautifully complements carbon fiber dashes, grey vinyl interiors, or stealthy hull trim, all while delivering pristine sound that cuts cleanly through wind and water noise.
Key Features
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Sleek Gunmetal Finish: The dark gunmetal metallic sports grille delivers a sophisticated, high-performance look that sets your boat apart from standard factory white setups.
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True Marine® Certification: Engineered to face down the elements. Every component is meticulously sealed and built using marine-grade materials to defend against saltwater corrosion, yellowing from intense UV rays, and heavy vibrations.
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Smooth Silk Dome Tweeters: Equipped with a treated 0.75-inch pure silk dome tweeter. Silk is chosen for its lightweight properties and excellent damping, which provide crisp, highly detailed highs that never sound harsh or fatiguing at high volume.
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High-Excursion Woofer Engineering: A long-throw woofer configuration paired with excellent power handling ensures tight mid-bass response and clear, forward vocals over engine hum.
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Standard Drop-In Upgrade: Sized perfectly to fit standard 6.5-inch marine speaker mounting holes, making it a straightforward, hassle-free upgrade for your center console, side panels, or wake tower.
Technical Specifications
| Feature |
Specification |
| Speaker Size |
6.5 in / 165 mm |
| System Configuration |
Coaxial (2-Way) |
| Continuous Power Handling (RMS) |
60 Watts |
| Recommended Amplifier Power |
20 - 120 Watts per channel |
| System Efficiency |
89.5 dB @ 1W / 1m |
| Nominal Impedance |
4 Ohms |
| Frequency Response |
55 Hz - 25 KHz (± 3 dB) |
Dimensions & Mounting Information
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Outer Diameter: 6.90 in / 175 mm
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Mounting Hole Diameter: 5.00 - 5.25 in / 127 - 133 mm
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Mounting Depth: 2.74 in / 70 mm
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Tweeter Protrusion: 0.55 in / 14 mm (beyond the grille face)
What’s in the Box? Sold as a pair (two 6.5-inch coaxial speakers with integrated gunmetal sports grilles), marine-grade stainless steel mounting screws, and full installation hardware.
We appreciate your business and are committed to providing exceptional service and timely delivery. Please review the shipping information below before placing your order.
Is It In Stock?
Over 98% of the products listed on our website are in stock.
If a part is not currently in stock, we will notify you as soon as we process your order. We process all orders on the same business day they are received.
If you would like to confirm availability before placing your order, please contact us.
Packaging
Rest assured that all items will be securely packaged to minimise the risk of damage during transit. Fragile or high-value parts may be packaged with additional protective materials such as bubble wrap, foam padding, or reinforced cartons.
Where Do You Ship From?
All parts are stocked and shipped from our location at The Boat Works Marina on the Gold Coast, Australia.
Shipping Rates
Shipping rates vary based on the size, weight, and destination of the package. Estimated shipping costs are displayed during checkout before your order is placed.
Free Shipping – Australia
We offer Free Shipping on parts orders over $55 within Australia.
If you select Free Freight, your order will generally be sent using Australia Post Standard or another standard delivery service.
Australia Post standard delivery is typically 4–10 business days within Australia.
If delivery time is important, we recommend selecting one of our paid express freight services.
Please note:
- Certain items do not qualify for Free Freight. Please refer to the product description for details.
- Dangerous goods, oils, lubricants, DeFOUL, Propspeed products, batteries, and certain oversized items may be excluded from Free Freight and may require road freight services.
Order Tracking
Once your order has been dispatched, you will receive an email containing your tracking number and carrier information.
Who Do You Ship With?
We ship using:
- Australia Post
- StarTrack
- Team Global Express
- UPS
- DHL Express
- FedEx
- TNT
- Couriers Please
- Freight forwarding and brokerage services such as Transdirect
We have extensive experience shipping throughout Australia and worldwide. We will select the carrier we believe is most suitable for your location and the type of goods being shipped.
If you would prefer to use your own carrier account or would like to discuss shipping options, please contact us.
International Orders
We ship worldwide.
International orders may be subject to import duties, taxes, VAT/GST, customs clearance fees, brokerage charges, and other fees imposed by the destination country.
These charges are not included in the product price or shipping cost displayed at checkout and are the responsibility of the recipient.
Customs regulations vary by country. In some cases, customs authorities may require additional information such as a passport number, national identification number, tax identification number, or business registration number before a shipment can be cleared for delivery.
If you are unsure what charges may apply in your country, we recommend contacting your local customs office before placing an order.
