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Deal.ai › JL Audio › Boat & Car Speakers
JL Audio
JL Audio M6-8IB-C-GWGW-4 M6 Series Subwoofer 8"

JL Audio M6-8IB-C-GWGW-4 M6 Series Subwoofer 8"

Best price now

$349.99at Abt ElectronicsChecked Nov 8

Compared across 3 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.

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Price facts

  • Last seen at $349.99 at Abt Electronics on Nov 8.
  • Checked at 3 stores.

Our take on the JL Audio M6-8IB-C-GWGW-4 M6 Series Subwoofer 8"

The JL Audio M6-8IB is an 8-inch marine subwoofer built for infinite-baffle mounting, so it drops into a sealed compartment or panel without a dedicated enclosure. It uses a 4-ohm single voice coil and a white grille with a gloss finish to match the rest of the M6 line. It suits boat owners who want real low-end from a modest cutout and are powering it with a dedicated sub amp. Against round 10-inch marine subs it gives up some output and depth, but it fits tighter spaces and matches M6 speakers cosmetically.

Best forBoat owners adding bass to an M6 speaker systemInfinite-baffle installs in a sealed compartment or panelSpace-limited locations where a 10-inch sub won't fitFreshwater and saltwater boats needing marine-rated gear
Pros
  • Designed for infinite-baffle mounting, no enclosure needed
  • Marine-rated build with a sealed motor and coated hardware
  • 4-ohm single coil works with most mono sub amps
  • White gloss grille matches other M6 Series speakers
  • 8-inch size fits cutouts a 10-inch sub cannot
Cons
  • Less output and low-end extension than a 10-inch marine sub
  • Needs a solid sealed baffle to perform well
  • Single 4-ohm coil limits wiring options for high-power amps
  • Premium JL Audio pricing against budget marine brands

JL Audio M6-8IB-C-GWGW-4 M6 Series Subwoofer 8" prices at every store

  • Abt ElectronicsNew

    In stock

    $349.99Free shippingChecked Nov 8
    Visit Abt Electronics
  • West MarineNew

    In stock

    $349.99Checked Nov 8
    Visit West Marine
  • CampingworldNew

    In stock

    $349.99Checked Nov 8
    Visit Campingworld

Store links may earn us a commission. Some prices via Klarna.

JL Audio M6-8IB-C-GWGW-4 M6 Series Subwoofer 8" price history

Lowest price we've seen: $349.99 on Nov 9 at Abt Electronics. Tracked across 3 stores since Nov 9.

What reviewers say

Owners of the M6 marine line generally praise the build quality and clean output, and the 8-inch sub is bought mainly to round out an M6 system. Most criticism centers on output for the size and the install demands of infinite-baffle mounting.

What people mention
  • Build qualityPraisedOwners say the motor and frame feel sturdy and survive marine use.
  • Bass outputMixedReviewers find the bass clean but limited in volume for an 8-inch driver.
  • InstallationCriticisedInfinite-baffle mounting needs a rigid, well-sealed baffle or results suffer.
  • System matchingPraisedBuyers like that it blends with M6 coaxial and component speakers.
  • ValueCriticisedSome owners feel it costs more than rival marine subs of similar size.

Specifications

Speaker Mounted in Box
NoSource
Impedance (ohm)
4.0Source
Type
SubwoofersSource
Color
WhiteSource
Brand Specific

Questions and answers

Does the JL Audio M6-8IB need an enclosure?
No. It is designed for infinite-baffle mounting, so it mounts in a sealed compartment or panel. The baffle must be rigid and airtight for good output.
What amplifier power does this sub need?
It is a single 4-ohm coil, so a mono sub amp rated for 4 ohms is the straightforward match. Check JL Audio's power recommendation for the M6-8IB and size the amp to it.
Is it a direct swap for a 10-inch marine sub?
No. It is an 8-inch driver with its own cutout, so it will not fit a 10-inch hole without an adapter or new baffle.
Can it be used in a car or only on a boat?
It is marine-rated and built for wet, outdoor environments, but it works in any infinite-baffle application, including cars, if the mounting is sealed.
What is in the box?
The subwoofer and its white grille are included. Mounting hardware and speaker wire are typically not, so plan for those separately.
Where is the JL Audio M6-8IB-C-GWGW-4 M6 Series Subwoofer 8" cheapest?
At Abt Electronics, for $349.99, as of our latest check.
Where can I buy the JL Audio M6-8IB-C-GWGW-4 M6 Series Subwoofer 8"?
3 stores we checked sell it, including Abt Electronics, West Marine, Campingworld.

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Suitable for Boats
YesSource