JL Audio C2400X 4" Evolution™ C2 2-Way Coaxial Car Speakers

For a car speaker to excel it must be thoroughly engineered in all areas. The woofer design must deliver sufficient efficiency, smooth mid-range response and good low-frequency extension. The tweeter must be smooth off-axis, exhibit good extension and be non-fatiguing, while the crossover design must seamlessly blend the sound of the drivers so that the end result is clean, realistic audio performance.

In designing the new C2 Coaxial and Component Systems, we have drawn from our vast experience in woofer design as well as the tweeter technologies employed in our world-class C5 component systems. The resulting products deliver a compelling performance solution at a price within reach of any enthusiast seeking a great listening experience.

Key Technologies:

Killer Bass

How do you get great bass from JL's component speakers? The same way you get it from their legendary subwoofers.

It starts with ample mechanical clearance, optimized suspensions and balanced motor designs. This allows using longer voice coils that let the speakers move further for enhanced output and lower frequency extension, something that weaker designs can’t do without exposing their inadequacies. JL also avoided certain “pitfalls of convenience”. For example, making a separate 6-inch and 6.5-inch model… because designs that attempt to cover both sizes compromise suspension travel and linearity.

Silky Smooth Tweeter

Ahh, the tweeter… everybody has a story about their tweeter. You hear crazy things like “unobtainium dioxide, vapor deposited by elves onto a specialized polymer”. Then you listen to it and it sounds like needles piercing your eardrums. So much for painted plastic tweeters, then.

In fine home speakers and studio monitors, one tweeter material and basic architecture is used above all others, and for very good reasons. A well-designed, edge-driven silk dome is smooth, detailed (on or off axis), and very hard to beat in terms of overall performance. Silk is about as lightweight as it gets (good for high frequency extension and efficiency), is very well-damped (doesn’t ring like a bell) and thanks to nature’s magic is also extremely durable in the automotive environment.

That’s why JL Audio chose it for the C2 (and C5) systems.

C2 Component Systems
These systems include flush and surface mount tweeter mounting fixtures and true 2-way outboard crossovers, each with three user-selectable tweeter attenuation levels.

Loud and Clear

It’s not terribly difficult to make a speaker that sounds pretty loud in the midrange. This common approach leads to speakers that grab your attention at first (loud tends to do that), but ultimately sound harsh and fatiguing during extended listening sessions (because the loudness is not evenly distributed).

Smoothness of response and freedom from excessive distortion are the factors that truly matter in creating a speaker design that reveals the inner detail of your music, making them enjoyable for years to come.

Making a speaker that can play loud without sounding harsh is what separates the men from the boys. So, JL focus on creating low-distortion motor and suspension systems, as well as carefully engineered cones that deliver the right combination of stiffness, damping and off-axis response. If you didn’t understand a word of that, don’t worry… you will hear it, loud AND clear when you audition a C2 speaker system.