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JL Audio C2-400X Evolution™ C2 Series 4" 2-way car speakers

Item # 136C2400X

The C2-400X 4" speakers feature rugged polypropylene cones with rubber surrounds that can handle plenty of...

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The C2-400X 4" speakers feature rugged polypropylene cones with rubber surrounds that can handle plenty of...

Item # 136C2400X

In stock

Deeply discounted installation gear

C$249.95 pair

About the JL Audio C2-400X

Buck Pomerantz

JL Audio's Evolution C2 Series speakers

The C2-400X 4" speakers feature rugged polypropylene cones with rubber surrounds that can handle plenty of power without distortion, so you get full-bodied tones. The 3/4" silk dome tweeters serve up smooth-sounding high frequencies that won't tax your ears, adding a satisfying dose of realism to your soundstage. Built-in crossovers ensure that the tweeters and woofers reproduce only the frequencies that they were designed to handle, so your tunes play smoothly across the whole musical spectrum. JL Audio includes a pair of grilles for custom installations, and a set of adapters that allow you to install these speakers in 4"x6" openings.

JL Audio's Evolution C2 Series speakers

Side view of Evolution C2 speaker JL Audio's Evolution C2 Series speakers bring precision sound to your vehicle. They'll reproduce subtle elements of your music like delicate woodwinds or soprano vocals, then turn on a dime to deliver the deep thrum of the bass or thunder of the drums.


Silk tweeter delivers smooth highs

Silk tweeter

The C2-400X 4" speakers feature rugged polypropylene cones with rubber surrounds that can handle plenty of power without distortion, so you get full-bodied tones. The 3/4" silk dome tweeters serve up smooth-sounding high frequencies that won't tax your ears, adding a satisfying dose of realism to your soundstage. Built-in crossovers ensure that the tweeters and woofers reproduce only the frequencies that they were designed to handle, so your tunes play smoothly across the whole musical spectrum. JL Audio includes a pair of grilles for custom installations, and a set of adapters that allow you to install these speakers in 4"x6" openings.


Grilles and 4"x6" adapters

Silk tweeter

JL Audio includes a pair of grilles that you can use for custom installations, along with a set of adapters that allow you to install these speakers in 4"x6" openings.

Priced per pair

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Product highlights:

  • 2-way 4" speakers (pair)
  • injection-molded mica-filled polypropylene woofer with butyl rubber surround
  • 3/4" silk dome tweeter
  • built-in crossover network
  • 4-ohm impedance
  • handles up to 35 watts RMS (105 watts peak power)
  • frequency response: 71-22,000 Hz
  • sensitivity: 84.5 dB
  • depth: 1-15/16"
  • grilles included
  • warranty: 1 year
  • MFR # 99612

What's in the box:

  • Two 4" 2-way speakers
  • 2 Grilles
  • Two 4x6 adapter brackets
  • 8 Self-tapping screws (#8 x 1-3/8")
  • 8 Speed clips
  • 4 Self-tapping screws (#8 x 8mm)
  • 2 Crimpable female quick slides (0.205"/5.2mm)
  • 2 Crimpable female quick slides (0.11"/2.8mm)
  • 2 JL Audio logo grille badges
  • Owner's Manual
  • Paper template

Customer reviews for JL Audio C2-400X

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4.5 out of 5 stars
50 reviews

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More details on the JL Audio C2-400X

Pat M.

Features & specs

General
Speaker Size 4
Design 2-way
Tweeter Design Dome
Impedance (Ohms) 4
Tweeter Composition Silk
Woofer Composition Mica-filled Polypropylene
Woofer Surround Butyl Rubber
Parts Warranty 1 Year
Labor Warranty 1 Year
Specifications
Sensitivity (1W at 1 meter) 84.5
Sensitivity at 2.83 volts 87.5
Frequency Response 71 - 22k Hz
Minimum RMS Wattage 10
Maximum RMS Wattage 35
Peak Power Handling (Watts) 105
Top-mount Depth (Inches) 1 15/16
Bottom-mount Depth (Inches) 1 15/16
Cutout Diameter or Length (inches) 3 3/4
Mounting Height (Inches) 0.55

Product Research

Features

Woofers: The JL Audio Evolution C2-400x speakers feature a 4" injection-molded, mica-filled polypropylene cone woofer with a butyl rubber surround, a 1" voice coil on a Kapton Former, a symmetrical roll spider and a Ferrite magnet. These carefully engineered cones deliver the right combination of stiffness, damping, and off-axis response. The speaker also provides good mid-bass, thanks to its mechanical clearance, optimized suspension and balanced motor design.

Tweeters: Each coaxial speaker features a ¾" silk dome, ferrofluid-cooled tweeter with a damping neodymium magnet. The edge-driven silk dome tweeter is smooth, detailed (on or off axis), and provides great overall performance. Silk is lightweight and great for high frequency extension and efficiency. It is also designed for durability in the extreme automotive environment.

Grilles: Front-loading protective grilles are included, with black steel mesh and satin silver accents. Electroformed logo nameplates can be positioned on the grilles or elsewhere in the vehicle, according to the needs of the installation.

Mounting: The speakers can be mounted in most standard 4" speaker applications. They also include 4x6 adapter plates for mounting in 4x6 speaker applications.

Removable Mounting Tabs: Most 4" factory speakers use four mounting screws. However, in some vehicles, only two mounting holes are used. In these cases, you can bend any unnecessary mounting tabs on the C2-400x speakers until they break off. The tabs are scored specifically for this purpose. Care should be taken in handling the speaker because the broken edges may be sharp.

Power Handling: JL Audio publishes several power specifications for this speaker, 35 watts continuous power handling (RMS), 105 watts peak music power, and 10-50 watts recommended amplifier power (RMS). We've listed the conservative combination of 10-35 watts RMS in the specs table.

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Customer Q&A

9 questions already asked

Q
Top marine 4 inch speaker that will fit in the space where the original speakers are on a 2012 Honda goldwing?
salkydog  Oct 16, 2023
1 answer
A
We cannot confirm any fitment on the 2012 Goldwing sadly as we have no information in our Vehicle Guide, Rick. Just taking a peek at the specifications on the 2012 Goldwings, it looks like the front fairing may have a 6.5" speaker, with a 5 1/4" in the rear. I see that some folks have had good results with Polk Audio and some slight trimming to the faring speaker mount location. The Polk Db in the link below is marine rated, has a fantastic sound quality, and can handle amplifier power if you add one later on. It is also available in 6.5", 5 1/4", and 4" variants, so make sure you take accurate measurements of the speakers you remove (and the mounting hole and depth) to confirm a good fit! We are always here to help. https://www.crutchfield.com/p_107DB652/Polk-Audio-DB-652.html
bo  Oct 16, 2023 (Staff)
Q
Hello can you confirm that the C2-400x will not fit to replace the fornt speakers in a 1986 560sl mercedes? thank you
randall  Sep 13, 2023
1 answer
A
Based on our measurements, it does not appear that the C2-400x will fit your vehicle's dash speaker location. However, it may be possible to custom mount the speakers. We do not have specifics in regard to custom mounting for this vehicle.
zachary  Sep 13, 2023 (Staff)
Q
Could these be used in a motorcycle that will be subject to rain?
scott  Jun 28, 2022
1 answer
A
Greetings Scott, and thank you for your question. The JL Audio C2s are not rated for any moisture resistance. Technically they are car speakers. A good amount of water on them can cause them to fail.
hogan  Jun 28, 2022 (Staff)
Q
Why won't this speaker fit in roll bar box in 2020 Jl? Along with the c2-350x in roll bar box? They say they Don't fit in dash either but I just watched a video and they do. I'm wanting to use these and 3.5 to upgrade my 2020 jl wrangler
don2775  Oct 17, 2021
1 answer
A
For additional details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle.
kenneth  Oct 18, 2021 (Staff)
Q
What is overall diameter with grill?
jeremy  May 16, 2021
1 answer
A
The grill outside diameter is shown as 5.20 inches. look under "what's in the box" and open the owner's manual for all the dimensions. they have a cardboard cutout template included too. I put mine in the kick panels of the Custom audio truck panels and analyzed those numbers careful before I purchased.
paul  Mar 06, 2022
Q
The back seat rear panel speakers are 4?????? why does it say these will not fit in the 2000 Porsche carerra 4 if the size is 4?????? in the back?
haden  May 03, 2021
1 answer
A
You can check to see if this will fit your vehicle by using our Outfit My Car tool: http://www.crutchfield.com/car/carselector.aspx For additional details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle.
thomas  May 21, 2021 (Staff)
Q
Will I need an amp for these speakers?
gideon p  Sep 10, 2020
2 answers
A
They are built to handle low power and not meant to be driven by an amp. We recommend using the radio power to run them
jason  Sep 27, 2020 (Staff)
A
Most likely not. Alpine head unit powers it well.
tomasz  Sep 24, 2020
Q
Do they come with grill covers ?
brad  Aug 08, 2020
3 answers
A
Yes, they come with a grill cover. I believe it???s shown in the picture on the speaker.
doug  Aug 08, 2020
A
Yes they do
steven  Aug 08, 2020
A
Yes they do
jason  Aug 08, 2020
Q
Can the JL Audio C2-400 replace the back door stock speakers of the Mercedes Benz W205 (2017) C180?
mervin  Nov 12, 2018
1 answer
A
You can check to see if this will fit your vehicle by using our Outfit My Car tool: http://www.crutchfield.com/car/carselector.aspx For additional details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle.
kristina  Nov 13, 2018 (Staff)
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