JL Audio M3-10IB Marine Subwoofer, 10in, 4 Ohm, 175W RMS

Overview

The JL Audio M3-10IB is a 10 in (250 mm) marine subwoofer driver for infinite-baffle installs, with 4 ohm impedance and 175 W continuous power handling.

It fits the common boat layouts where the back of the speaker vents into a larger cavity, like a helm console, cockpit side panel, or an under-seat bulkhead. Infinite-baffle use is the preferred setup, with at least 2 cu. ft. (56.6 L) of clear air space behind the driver. It can also be installed in a sealed enclosure when you need a dedicated box.

Plan for an 8.875 in (225 mm) cutout and 5.00 in (127 mm) mounting depth. Front clearance depends on the grille: Classic protrudes 1.50 in (38 mm) and Sport protrudes 1.58 in (40 mm).

Key features

• 10 in (250 mm) subwoofer driver with 4 ohm nominal impedance
• 175 W continuous power handling for moderate-power marine audio systems
• Infinite-baffle use preferred, with at least 2 cu. ft. (56.6 L) of open air volume behind the mounting surface
• Also supports sealed enclosure installs when you need to control the back wave
• Mounting dimensions: 8.875 in (225 mm) cutout, 5.00 in (127 mm) mounting depth, 10.75 in (273 mm) outer diameter
• RGB illumination variants add built-in grille lighting with a 10 to 14.4 V DC operating range
• Included stainless-steel mounting hardware for typical fiberglass and composite panels

Variants

This subwoofer is offered with different grille looks and with or without built-in RGB illumination.

Across the range, the driver size, 4-ohm load, and mounting cutout stay consistent. The differences are the grille color and style (Classic vs Sport) and whether a separate LED harness is present for accent lighting.

• 010-03264-00: RGB Illumination Yes; Grille Color/Style Gray Sport. The illuminated grille adds a separate 12 V lighting circuit to run alongside the audio wiring.
• 010-03071-00: RGB Illumination No; Grille Color/Style Gray Sport. This version keeps the install to speaker wiring only, with no LED leads to route or fuse.
• 010-03265-00: RGB Illumination Yes; Grille Color/Style White Sport. The Sport grille stands slightly further proud of the panel and includes the RGB harness for accent lighting.
• 010-03072-00: RGB Illumination No; Grille Color/Style White Sport. You get the Sport look in white without adding any lighting connections.
• 010-03070-00: RGB Illumination No; Grille Color/Style White Classic. The Classic grille has a flatter face than Sport and slightly less front protrusion.

Installation and fit

Choose a flat mounting surface with room for the 5.00 in (127 mm) mounting depth and for cable routing. For infinite-baffle installs, the space behind the driver needs to stay mostly open, since a packed compartment can reduce output and create buzzes.

Cut the 8.875 in (225 mm) opening, test-fit the frame, then mark and drill pilot holes for the mounting screws. Tighten in steps around the circle so the frame seats evenly on fiberglass or composite panels.

Audio system integration

This is a passive 4-ohm subwoofer driver that connects to a marine amplifier through spade terminals. Pair it with an amplifier channel that is comfortable at a 4-ohm load, then set your crossover so your main speakers are not asked to play the lowest bass notes.

It works best as a dedicated subwoofer channel instead of relying on an in-line passive coil in the speaker wiring.

RGB illumination wiring

Illuminated versions add a separate RGB harness that runs on 10 to 14.4 V DC. The main LED positive is a yellow lead, with separate red, green, and blue negatives, and the circuit draws 108 mA at 12 V.

Protect the yellow lead with a 150 mA fuse at each speaker location and use at least 16 AWG wire for the LED circuit. Do not connect the LEDs to 24 V systems or to navigation light circuits.

Care on board

The speaker is water and spray resistant, but it is not meant to be submerged or blasted with high-pressure spray. After saltwater use, rinse with fresh water and clean with mild soap to keep the grille finish in good shape.

What's included

• One polymer subwoofer grille
• Six #8 x 1 1/2-inch (38 mm) Phillips pan-head stainless-steel screws
• Six #8 stainless-steel washers
• Logo badges

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.

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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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