JL Audio XDM Car and Marine Amplifier, Class D, NexD Switching, Dual-Mode Input Filter

Overview

The JL Audio XDM is a line of Class D car and marine audio amplifiers for powering speakers and subwoofers on board without giving up a lot of mounting space. Across the range, you will find 1 to 8 channel configurations with total power ratings from 200 W up to 1000 W, including models intended for 12 V systems and specific versions intended for 24 V systems.

This amplifier family is built around noise rejection that matters on boats, where long cable runs and charging systems can introduce hum. Setup access is straightforward because the controls sit on top under a gasketed, removable cover, so it can be mounted under a seat, inside a console, or behind a bulkhead while still staying serviceable.

Key features

• Class D design using high-speed switching technology to keep heat and current draw in check in tight mounting locations.
• Dual-mode input filtering with differential-balanced inputs to help reduce alternator and ignition noise that can show up in marine installs.
• Built-in 12 dB per octave filtering on channel banks with selectable high-pass or low-pass operation and adjustable cutoff from 50 to 500 Hz.
• Automatic turn-on capability via signal sensing or DC-offset sensing for systems where a dedicated remote turn-on lead is not available.
• Controls protected beneath a gasketed, removable top cover for installs where splash and vibration are part of normal use.
• Optional remote level control support using HD-RLC or MHD-RLC (water-resistant) controllers, sold separately, for quick adjustment from the helm or cockpit.
• Range includes 1, 2, 3, 4, 5, 6, and 8 channel models with total power ratings from 200 W to 1000 W, depending on configuration.

Variants

This page covers the full Garmin JL Audio XDM amplifier range. Configurations vary by channel count (1 to 8) and total rated power (200 W to 1000 W), so the same family can support anything from a small two-speaker cabin setup to multi-zone speaker layouts with a dedicated subwoofer channel.

System voltage also varies across the line. Some models are intended for 12 V negative-ground electrical systems, while select versions are intended for 24 V negative-ground electrical systems only, so matching the amplifier to the boat’s supply voltage is part of the fit check.

Installation and setup

Plan the mounting spot the same way you would for any high-output marine amplifier: a location that stays dry, has airflow, and keeps the chassis away from extreme heat. Under-seat lockers, inside consoles, and protected compartments work well when they are ventilated and wiring can be secured to avoid chafe.

Power and speaker wiring should be routed away from moving parts and sharp edges, with protection where it passes through bulkheads. Leave enough slack and access to reach the top-mounted controls during tuning after the unit is fastened down.

Electrical and system integration

The input architecture is meant to play nicely with real-world boat systems, including installs where noise has been a problem. Differential-balanced inputs and the dual-mode input filter help keep the signal clean, and automatic turn-on options can simplify integration when the source unit does not provide a traditional remote lead.

On-board tuning is handled with adjustable filters on channel banks, which helps when you need to high-pass small coaxials in the cockpit, low-pass a subwoofer channel, or shape how different speaker runs share the load.

Use on board

Channel count is the practical difference you feel day to day. The 1-channel configurations are commonly used when the system needs dedicated subwoofer power, while multi-channel models support pairs of full-range speakers across the cockpit and cabin, and the higher channel-count units suit boats running more speakers across multiple listening areas.

This range is a good match for boats where amplifier space is tight under seating or inside a helm console, and for systems where charging noise and long wiring runs have made clean audio harder to achieve.

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Returns may be requested within 30 days of receiving your order. Items must be unused, uninstalled, unaltered, and returned in their original packaging with all tags, packing materials, blank warranty cards, manuals, instructions, accessories, and included items. Certain products, including installed or used electronics, electrical components, lighting, consumables, custom or special-order items, cut-to-length products, safety equipment, and merchandise exposed to water or marine conditions, may not be eligible for return.

To request a return, sign in to your account and select the applicable order and items, and submit your request for review. Eligible unfulfilled items may also be submitted for cancellation within 1 hour of placing the order. Returns or cancellations are not considered approved until you receive confirmation from Apollo Lighting. Please do not ship or drop off merchandise before receiving return approval and instructions.

Customers are responsible for arranging and paying for return shipping unless the return is due to an error by Apollo Lighting or the item is verified as defective, damaged, or incorrect. Missing, damaged, defective, or incorrect items must be reported within 2 business days of delivery, and photos or other documentation may be required for review. If the issue is verified, Apollo Lighting may provide or reimburse return shipping and issue a replacement or refund depending on the circumstances. International customers are responsible for return shipping, duties, taxes, customs charges, brokerage fees, and other costs associated with an international return.

After your return is received and inspected, approved refunds are issued to the original payment method and may take 5-7 business days to appear after processing. Original shipping and handling charges are nonrefundable, and the value of any included free items that are not returned may be deducted from the refund. Apollo Lighting does not charge a standard restocking fee on eligible returns. Returns that are incomplete, damaged, installed, used, altered, improperly packaged, or otherwise do not meet the eligibility requirements may be refused. We recommend using a trackable and appropriately insured shipping service for all customer-arranged returns.

For assistance, contact info@apollolighting.com or call +1 (954) 375-0100.

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Many products sold by Apollo Lighting include a manufacturer's warranty covering defects in materials or workmanship. Warranty terms vary by brand, product category, and model, so eligibility, coverage duration, exclusions, and available remedies are determined by the applicable manufacturer. We recommend reviewing the warranty information provided with your product before installation or use, especially for marine electronics, navigation equipment, lighting, electrical systems, pumps, safety equipment, and other specialized marine products.

If you need warranty service, the claim must follow the process established by the manufacturer, authorized service center, or designated warranty provider. You may be asked for proof of purchase, a serial number, product registration, photos, maintenance or installation records, or other documentation. Apollo Lighting does not determine or modify a manufacturer's warranty coverage or final claim decision, but we are happy to help provide purchase information and direct you to the appropriate manufacturer or warranty resource.

Keep your receipt, product documentation, serial number information, and original packaging when practical. Damage caused by normal wear, misuse, improper installation, insufficient maintenance, corrosion, impact, unauthorized modifications, electrical issues, or operation outside the manufacturer's specifications may not be covered. Warranty claims are separate from standard returns, so a product that has been installed, used, or exposed to marine conditions may no longer qualify for return while still remaining eligible for evaluation under the manufacturer's applicable warranty.

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