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JL Audio C2-400X

Evolution™ C2 Series 4" 2-way car speakers

16 Reviews

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Item # 136C2400X

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Overview

Our take on the JL Audio C2-400X

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

Great sound, Used in the pillar of my Chevy truck. Don't expect too much power, they're only 4".

Mitchell, Lincoln, CA

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

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
  • power range: 10-50 watts RMS (105 watts peak power)
  • frequency response: 71-22,000 Hz
  • sensitivity: 84.5 dB
  • depth: 1-15/16"
  • warranty: 1 year
  • Our 60-day money-back guarantee
Reviews

JL Audio C2-400X Reviews

Average Customer Review(s):

(16 Reviews)
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Details

Hands-on research

Features and Specs

General
Speaker Size 4
Design 2-way
Tweeter Design Dome
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 50
Peak Power Handling (Watts) 105
Impedance (Ohms) 4
Top-mount Depth (Inches) 1 15/16
Bottom-mount Depth (Inches) 1 15/16
Cutout Diameter or Length (inches) 3 3/4

Product Research

Features

Woofers: The JL Audio Evolution C2-400x coaxial speakers feature a 4" injection-molded, mica-filled polypropylene cone woofer with a butyl rubber surround, a 1.0" 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: The Evolution C2-400x coaxial speakers feature a 0.75" 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: The Evolution C2-400x coaxial speakers include front-loading protective grilles with a striking design that combines black steel mesh with 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 Evolution C2-400x coaxial speakers can be mounted in most standard 4.0" 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 lists two power figures in the manual; 35 watts continuous power handling and recommended amp power 10-50 watts RMS. We've listed the RMS power recommendation in the specs table.

Our Product Research Team

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