Amplifiers
    JL Audio XDM Car and Marine Amplifier, Monoblock Car and Marine Subwoofer Amplifier (300 W) (XDM300/1)
    JL Audio

    JL Audio XDM Car and Marine Amplifier, Monoblock Car and Marine Subwoofer Amplifier (300 W) (XDM300/1)

    SKU JLA-010-03839-00

    Our Price$529.99
    Usually ships 6-8 days
    Brand
    JL Audio
    Model
    XDM300/1
    Channels
    1
    Rms Power
    300 W
    24 V Model
    No
    Total Power
    300 W
    Manufacturer
    Garmin
    Input Voltage
    12 V DC

    Contact us to confirm availability and shipping time. 30-day returns on unused stocked items. Exclusions apply. Return policy · Shipping policy

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    About this product

    JL Audio XDM Car and Marine Amplifier, Monoblock Car and Marine Subwoofer Amplifier (300 W) (XDM300/1). A compact amplifier for marine and powersports audio systems. Built-in signal processing helps tailor its output to the connected speakers or subwoofer, while its input options simplify system integration. Model: XDM300/1. Channels: 1. Total Power: 300 W. 24 V Model: No. Product and installation dimensions: Product Length: 6.85 in; Product Width: 7.09 in; Product Height: 2.05 in.

    JL Audio XDM Car and Marine Amplifier, Monoblock Car and Marine Subwoofer Amplifier (300 W) (XDM300/1).

    A compact amplifier for marine and powersports audio systems. Built-in signal processing helps tailor its output to the connected speakers or subwoofer, while its input options simplify system integration.

    • Model: XDM300/1
    • Channels: 1
    • Total Power: 300 W
    • 24 V Model: No

    Product and installation dimensions

    • Product Length: 6.85 in
    • Product Width: 7.09 in
    • Product Height: 2.05 in

    Product details

    Brand
    JL Audio
    Model
    XDM300/1
    Channels
    1
    Rms Power
    300 W
    24 V Model
    No
    Total Power
    300 W
    Manufacturer
    Garmin
    Input Voltage
    12 V DC
    Dimension Source
    https://static.garmin.com/pumac/XDM300_1_MAN.pdf
    Product Width (In)
    7.09 in
    Product Height (In)
    2.05 in
    Product Length (In)
    6.85 in
    Manufacturer Part Number
    010-03839-00

    Shipping & returns

    • Contact us to confirm availability and shipping time.
    • 30-day returns on unused stocked items. Exclusions apply. See policy
    • Custom and quoted items are non-returnable once production begins.

    Warranty

    Backed by the original manufacturer’s warranty plus our workmanship guarantee on assembled harnesses. Contact us with your invoice and we’ll coordinate any covered repair or replacement.

    Read the full warranty terms

    Technical support

    Need help choosing the right part?

    Our marine electrical team can review your setup and recommend compatible products. Send a photo, a sketch, or your circuit list and we'll come back with a parts list that fits the boat.

    Certifications & training

    • ABYC-aware build practices
    • OEM-grade marine wire & terminals

    Additional capabilities are based on hands-on experience building marine wiring systems rather than third-party certification.

    Share your project

    Have you used this product in a project? Send us photos of your install for consideration in our project gallery.

    Why buy from Common Ground Marine

    • 20+ years building marine wiring harnesses, panels, and shore-power systems.
    • Engineers — not a phone tree — review every custom build before parts are cut.
    • OEM-grade components: tinned copper, sealed connectors, marine-rated jackets.