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JL Audio M10IB5-CG-WH

10" marine subwoofer for free-air applications

Item #: 136M10IB5C

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Great bass on your boat

The M10IB5-CG-WH 10" marine subwoofer reflects JL Audio's commitment to top-quality engineering and sound quality. Its sparkling white finish and "Classic Grille" design make it a perfect match for many boat interiors.

Sub cut away diagram

Built for life on the water

Built from the ground up for the marine environment, the M10IB5-CG-WH features a corrosion-resistant polymer basket that seals off the sub's internal structure for extra protection. The marine-grade synthetic fiber spider, injection-molded polypropylene cone, and synthetic rubber surround provide top performance, while shrugging off the corrosive effects of sun, salt, and moisture.

The UV-resistant polymer basket encases and protects the entire structure, and as an added bonus the UV protection ensures the grilles will stay white, looking factory-fresh even after years of sun exposure.

Mount it almost anywhere

The subwoofer's motor structure allows extended cone movement, so you'll hear bass that's loud and low, yet precise and smooth. JL Audio designed the M10IB5-CG-WH for "free-air" applications, so you don't have to put it in a box to enjoy great-sounding bass. You can mount the M10IB5-CG-WH in a bulkhead, storage compartment, or wherever you have the space for it.

Power range

Power range

All JL marine subwoofers are made in the USA

Made in the USA

Product Highlights:

  • 10" 4-ohm marine subwoofer
  • injection-molded mica-filled polypropylene woofer with synthetic rubber surround
  • Centrex polymer basket and grille, with stainless steel back plate
  • gold-plated, marine-grade brass binding posts
  • marine-grade synthetic fiber spider
  • power range: 50-150 watts RMS (300 watts peak power)
  • sensitivity: 86.7 dB
  • top-mount depth: 5-15/16"
  • designed for free-air applications
  • warranty: 2 years
  • Our 60-day money-back guarantee

JL Audio M10IB5-CG-WH Reviews

Average Customer Review:

5 Reviews

JL Audio Subwoofer

Written by: Jeff from Florida on July 13, 2015

Crutchfield Customer Review (What's this?)

When I heard about JL audio I only focused on the thing that everyone asks first. Well how much are they?? Well, when they say you get what you pay for!! This product far superseded my expectations!!!! JL Audio products are amazing. I put this sub in my boat and it ROCKS!!!! I would give it 3 thumbs up but I only have two hands!!! Thank you Crutchfield for delivering and carrying quality products

Pros: Awesome range in bass tones

Cons: Definitely need the space for it

Jl marine subwoofer

Written by: David from Auburn,ca on June 1, 2015

Crutchfield Customer Review (What's this?)

I love this sub. I've had car subs in past that had to be in box to sound good. No box needed with this. It sounds great and saves a lot of space.

Pros: No box needed. Saves space. Sounds great.


JL Audio M10IB5-CG-WH

Written by: A. Lang from Florida on April 29, 2015

Crutchfield Customer Review (What's this?)

This is the second one I've installed on a boat and they have both been great performers. Best Sub in its class for the marine environment.

Pros: Great sound and power handling


JL Audio M10IB5-CG-WH

Written by: johnd from Aurora, IL on July 28, 2013

Crutchfield Customer Review (What's this?)

sounds nice



Great once set up

Written by: Rineholio from Walla Walla, WA on September 2, 2008

I have a 25 foot aluminum jet-boat with bench seats like an RV that can be made into a bed. It has glass sliding windows on the sides, and a soft top. The sub is mounted on the front of the right seat box facing forward. I run it with a JL M6450 Marine Amp that puts out 75 watts for 4 speakers and 150 watts to the sub. I run JL for the regular speakers too.

The sub is an infinite baffle design, and I spent a lot of time adjusting the head and the cross-overs on the amp to get things right, but just couldn't tune out the boominess good enough to suit me.

I then fired up the saw and built a sealed box that the instructions said you could use. Now it rocks.

The sub blends in perfectly with the other speakers and the whole system sounds about as close to lifelike as you can get in a boat.

The sub doesn't hit really hard, but it's very musical. I like Eminem and the lows sound exactly like they should. If you want it to hit harder, try 300 watts or so. The over all sound of this system is so clean you don't realize how loud you're really playing it. You really feel the bass if you grab onto the boat. Hope fish are attracted to music.

I want to add another to the rear of the box aiming sideways. As you walk from the closed front of the boat where the current sub is to the rear opening, the bass fades.



Hands-on research

What's in the box?

Download owner's manual

  • 10" Marine subwoofer
  • White polymer grille
  • 6 Stainless-steel philips-head screws
  • 6 Stainless-steel flat-washers
  • Owner's Manual

Product Research


Marine Tested: JL Audio's marine subwoofers go through ultraviolet testing chambers (to simulate years of sun exposure) and salt fog chambers (to simulate years of exposure to salt-water environments and are built to withstand the rigors of marine use.

Woofer: The JL Audio Marine 10" subwoofer features an injection-molded, mica-filled polypropylene cone woofer with a synthetic rubber surround specifically formulated for marine duty. The woofer uses a vented motor design with a marine-grade stainless steel rear diffuser plate and a marine-grade synthetic fiber spider with a progressive roll design.

DMA (Dynamic Motor Analysis): JL Audio's proprietary Dynamic Motor Analysis (DMA) technology results in ultra-linear motor force over a long range of excursion and a wide range of power inputs to reduce distortion and improve sound quality.

Infinite-Baffle Operation: The JL Audio M10IB5-CG-WH is optimized for infinite-baffle operation so that it can be installed in a variety of locations, without the need for a dedicated enclosure.

Polymer Basket And Grille: The Centrex, UV-resistant polymer basket and grille are corrosion and UV-resistant which help protect the woofer and encapsulates the motor assembly to prevent corrosion.

Connections: The 10" marine woofer is equipped with gold-plated, marine-grade brass connection terminals.

Mounting Hardware: The woofer comes supplied with marine-grade, stainless-steel mounting screws and washers.

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