JL Audio MediaMaster 105-HR Hidden Marine Source Unit, NMEA 2000 MFD Control, 4-Zone, 12-Channel 4V RMS Preamp Outputs

Overview

The JL Audio 010-03854-00 is a hidden marine source unit (MediaMaster 105-HR, MM105-HR) that runs a multi-zone audio system while keeping the main chassis out of sight. It operates on 10 to 15.9 V DC with a 5 A fused power feed, so it is a match for 12 V boat systems (24 V installations need a regulated 12 V supply).

The main unit is rated IP67 for water resistance, which helps when it is mounted behind the helm, inside a console, or in another spot where humidity and washdowns are common. Operating temperature range is -20 C to +70 C (-4 F to +158 F).

Control is handled through a NMEA 2000 network connection (Micro-C) or compatible remotes, rather than a built-in front panel. Audio distribution is handled through four zones, each with stereo RCA outputs and a dedicated subwoofer RCA output, plus AUX inputs, Bluetooth streaming, AM/FM, SiriusXM accessory tuner connectivity, and two USB ports for playback and charging.

Key features

• Hidden chassis style with no built-in front panel controls, intended for use with NMEA 2000 MFD control or compatible wired and wireless remotes
• Runs on 10 to 15.9 V DC (12 V nominal) with a 5 A fuse requirement
• IP67-rated main unit for mounting locations that see moisture and vibration
• Four audio zones with stereo RCA outputs plus a subwoofer RCA output per zone for feeding external amplifiers
• NMEA 2000 Micro-C connection; MFD control depends on NMEA 2000 entertainment protocol support and may require a display software update
• Bluetooth audio streaming with up to 8 paired devices and range up to 35 ft (11 m)
• Two USB ports: USB 1 supports up to 1 A charging output, USB 2 supports up to 500 mA charging output
• Two AUX inputs, AM/FM antenna input, SiriusXM accessory tuner connection, plus illumination input and an amp turn-on lead

Installation and setup

Mount the chassis where it stays out of direct spray but can still be reached for service and wiring. Leave enough slack to secure the harness, RCA leads, and network cabling so movement at sea does not tug on the connectors.

Power wiring is a simple +12 V and ground connection with a 5 A fuse. The illumination input can be tied into a vessel lighting circuit if you want the unit to track that signal, and the amp turn-on lead can be used to switch connected amplifiers on and off with the source unit.

Control and networking

For helm-based control, connect the Micro-C NMEA 2000 port to your vessel network and use a compatible multifunction display or network controller. Remote control can also be added over Bluetooth Low Energy or via wired remote cabling, and wired remotes can be installed at distances up to 75 ft (23 m) with support for up to three remotes on one source unit.

Who it fits

This unit makes sense on boats that already rely on external amplifiers and need zone control across multiple listening areas. It is also a good match when helm real estate is tight and you would rather keep the source hardware hidden, using a display or remote keypad for daily control.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Orders of $100 or more qualify for free shipping when eligible. For orders under $100, shipping costs are calculated at checkout based on destination, package weight, and selected service. International shipping is available for eligible products, and certain items may require additional handling, warehouse transfers, or may ship directly from the manufacturer, which can affect processing time.

Deliveries are handled by preferred carriers such as USPS, UPS, FedEx, DHL, and others depending on your location and selected service. Estimated delivery times are displayed at checkout and may vary due to customs processing, carrier delays, weather, postal disruptions, or other circumstances beyond our control. Once your order ships, you'll receive a confirmation email with tracking information. Tracking may take up to 24 hours to update on the carrier's website and is also available through your account when applicable.

We ship throughout the United States and to most international destinations for products eligible for international shipping. International orders may be subject to customs duties, taxes, brokerage charges, or other import fees, which are the customer's responsibility and are not included in the product or shipping price. PO Boxes are accepted only when shipping through USPS, and not all packages qualify for this option. If your order does not arrive within the estimated delivery window, please contact us at info@apollolighting.com or +1 (954) 375-0100 so we can assist with locating your package.

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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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