JL Audio Evolution C2-400X Coaxial Speaker Pair

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JL Audio Evolution C2-400X Coaxial Speaker Pair

In stock
  • 4" Coaxial Speaker System
  • With Integral Crossover & Silk Dome Tweeter
  • Grilles Included

JL Audio C2-400x

Coaxial Speaker System: 4-inch (100 mm) Woofer, 0.75-inch (19 mm) Silk Dome Tweeter


The Evolution C2 systems deliver sparkling high-frequency detail, smooth mid-range and powerful mid-bass, thanks to real silk dome tweeters and precision-engineered woofer designs.

The C2-400x system features 4-inch (100 mm) woofers with mineral-filled polypropylene cones, long excursion capabilities and stamped steel frames. The woofer design benefits from JL Audio's vast woofer design experience and advanced modeling systems.

Breakaway mounting tabs on the woofer frame allow the C2-400x to be installed in four-hole or two-hole configurations. Injection-Molded adaptor plates are also included to allow mounting of the C2-400x speakers into a 4 x 6 (100 x 150 mm) speaker location.

Tweeters are coaxially mounted and built with 0.75-inch silk dome diaphragms that deliver smooth, extended response, on and off axis. The small size of the C2 tweeter minimizes tweeter protrusion, allowing C2 coaxials to fit behind most factory speaker grilles.

Speaker grilles are included, each consisting of a black grille tray with satin silver accents and a black steel mesh grille with an electroformed JL Audio logo. Sonic character: Clean and Dynamic Sold as a pair.


General Specifications

  • Continuous Power Handling (RMS) 35 W
  • Peak Music Power 105 W
  • Recommended RMS Amplifier Power (per Ch.) 10 - 50 W
  • System Efficiency 84.5 dB @ 1 W / 1 m
  • System Nominal Impedance 4 Ohms
  • System Frequency Response 71 Hz - 22 KHz ± 3 dB

Coaxial Physical Specifications

  • Frame Outer Diameter* (A) 4.02 in / 102 mm
  • Grille Tray Outer Diameter (B) 5.20 in / 132 mm
  • Magnet Outer Diameter (C) 2.36 in / 60 mm
  • Frontal Coaxial Tweeter Protrusion** (D) 0.56 in / 14 mm
  • Frontal Grille Protrusion*** (E) 0.66 in / 17 mm
  • Mounting Hole Diameter (F) 3.81 in / 97 mm
  • Mounting Depth (G) 1.81 in / 46 mm

*Does not take into account mounting tabs

**Frontal coaxial tweeter protrusion measured from mounting surface

***Frontal grille protrusion measured from mounting surface

More Information
Product Name JL Audio Evolution C2-400X Coaxial Speaker Pair
SKU C2400X
Manufacturer Metra Electronics
Manufacturer Sku 99612
Manufacturer's Warranty 1 Year Manufacture's Warranty
Manufacture's Warranty 2 N/A
UPC 699440996129
Power Handling (Watts RMS) 35 W
Power Handling (Watts Peak) 105 W
Frequency Response 71Hz - 22kHz
Sensitivity 87.5 dB
Woofer Composition Mica-filled Polypropylene
Woofer Surround Butyl rubber
Cutout Diameter (in) 3-3/4 in
Top-mount Depth (Inches) 1-15/16 in