JL Audio MHD-RLC Amplifier Remote Level Control and Cable, For JL Audio MHD and XDM Amplifiers, Water-Resistant, 16.4 ft Cable

Overview

The Garmin 010-13839-00 is a JL Audio water-resistant amplifier remote level control and cable for adjusting bass level from a more convenient location on board. It is used with compatible JL Audio amplifiers, including MHD and XDM models, and works as an attenuator on the amplifier input gain so the overall amplifier level can be adjusted without reaching the amp itself.

This is a practical add-on for marine audio systems where the amplifier is mounted out of sight in a console, locker, cabin space, or protected equipment area. The included 16.4' (5 m) cable gives installers room to place the control where the operator or passenger can reach it, such as near the helm or cockpit audio controls.

Key features

• Remote bass level control for compatible JL Audio amplifiers, including MHD and XDM models.
• Acts on the amplifier input gain as an attenuator, making level changes simple from the control location.
• Water-resistant control suited to exposed marine audio areas where spray and damp hands are part of normal use.
• Includes a black ABS knob for a clean control point at the helm, console, or dash area.
• Supplied with a 16.4' (5 m) cable to support flexible routing between the amplifier and control location.
• Mounting hardware is included for a straightforward installation.

Installation and setup

The control is best mounted where it can be reached easily while the boat is underway, without placing it where it will be kicked, snagged, or constantly washed down. The cable should be routed with the rest of the audio wiring where practical, keeping it protected from sharp edges, moving gear, and high-heat areas.

Because the control adjusts the amplifier level remotely, it is especially useful when the amplifier is installed behind panels or inside storage spaces. After installation, set the amplifier gain correctly first, then use this remote for day-to-day bass level changes at the helm or listening area.

Compatibility and use on board

This remote level control is intended for compatible JL Audio amplifiers and should be matched to the amplifier series before installation. It is a good fit for boats where bass output needs quick adjustment as passengers move around, engine noise changes, or music volume shifts between dockside use and cruising.

For marine systems with subwoofers or dedicated low-frequency channels, this control gives the operator a simple way to trim bass without changing the main source unit settings. That helps keep the system comfortable at low volume and better balanced when the boat is running.

What’s included

• Black ABS knob
• Mounting hardware
• 16.4' (5 m) cable (MHD-RLC)

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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.

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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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