JL Audio C2-400x Coaxial Speakers
200,00 €
JL Audio C2-400x is a pair of coaxial speakers for a car audio system. Each speaker combines a 100 mm mineral-filled polypropylene cone with a coaxially mounted 19 mm silk-dome tweeter, so the tweeter needs no separate mounting location. Breakaway frame tabs allow two-hole or four-hole mounting. Adapter plates for a 100 × 150 mm speaker location and speaker grilles are included.
JL Audio C2-400x coaxial speakers are sold as a pair for a car audio system. Each speaker combines a 4-inch (100 mm) woofer and midrange driver with a 0.75-inch (19 mm) tweeter mounted above it. Both drivers occupy one speaker location, so you do not need to find a separate place in the vehicle trim for the tweeter.
Construction
The woofer and midrange cone is made from mineral-filled polypropylene and sits in a stamped-steel frame. The driver also has extended excursion capability. These details describe the speaker itself; the shape of the vehicle’s opening and the space around it still determine how it can be installed.
The tweeter has a silk dome. Its coaxial position places it above the main driver, and its low-profile housing allows the assembled speaker to fit behind most original vehicle grilles. Check the grille in your own vehicle before fitting it: its shape and the available clearance determine the final installation position. The tweeter’s response is described as smooth and extended both on and off axis.
Mounting options
Breakaway mounting tabs give you a choice of four-hole or two-hole mounting. Which arrangement works depends on the opening and the positions of the mounting points in your vehicle. Compare those points with the speaker frame before removing any tabs.
The pair also includes molded mounting adapter plates for a 4 × 6-inch (100 × 150 mm) speaker location. They are useful when you want to install a round 4-inch (100 mm) speaker in a location of that size. The stated location size alone does not establish fit: the exact shape and clearance of the vehicle’s mounting area still need to be checked.
Choosing a location in the car
Before removing the existing speaker, compare its position with the C2-400x frame. Check the opening, mounting holes, space behind the speaker and clearance to the grille. A matching opening size by itself is not enough to confirm that the speaker will fit a particular car. If you intend to keep the original grille, check that it closes without touching the tweeter. If the installed speaker will remain visible, you can use the grilles supplied with the pair.
The two speakers can be planned for corresponding locations, such as the left and right sides of the car. Assess each position separately before installation. Vehicle trim or existing brackets may make the mounting conditions different even for two locations intended for the same pair. When fitting the speakers, make sure each frame is held securely and that the cone and nearby moving vehicle parts have the clearance they need.
Connections and sound settings
Before connecting the speakers, compare the vehicle wiring with the connection requirements of the head unit or amplifier you have chosen. If you are replacing factory speakers, inspect the existing connectors and check the wire polarity. If you use a separate amplifier, follow its wiring diagram. The supplied C2-400x description does not state impedance, power handling or connector type. It therefore cannot, on its own, confirm compatibility with a particular amplifier, head unit or factory connector.
Start with the left-to-right balance centered so you can compare the two speakers. If the system has a front-to-rear fader, use it to choose which row of speakers you want to emphasize. Leave any equalizer at a neutral setting initially, then adjust it while listening at your usual volume. Increase the volume gradually and turn it down if you hear distortion. These adjustments are made on the audio system; the supplied description does not identify separate controls on the C2-400x speakers.
Using the pair in a sound system
In a typical car stereo system, the pair can occupy left and right speaker locations. If the car has more speakers, decide which existing positions you intend to replace before choosing where this pair will go. Check the dimensions and connections at each position. In a system with several speakers, the balance and fader settings can help you assess how the new pair sounds alongside those that remain. Because each C2-400x has a coaxially mounted tweeter, the vehicle trim does not need a separate tweeter location for this pair.
Grilles and contents
The included speaker grilles have black frames with satin-silver accents. Their fronts use black steel mesh and carry an electroformed JL Audio logo. They provide an option for an installation where the speakers remain visible and the original vehicle grilles are not used.
The speakers are sold as a pair, with mounting adapter plates and grilles included. Before installation, decide whether you will keep the vehicle’s original grilles or use the supplied ones in a visible location. That choice also affects which clearances you need to check around the front of each speaker.
Technical specifications
| Model | JL Audio C2-400x |
|---|---|
| Type | Coaxial car speaker system |
| Sales unit | Pair |
| Woofer and midrange driver | 100 mm; extended excursion capability |
| Cone material | Mineral-filled polypropylene |
| Frame | Stamped steel |
| Tweeter | Coaxial, 19 mm silk dome; low-profile housing |
| Tweeter response | Smooth and extended on and off axis |
| Mounting options | Four-hole or two-hole mounting using breakaway frame tabs |
| Adapter plate purpose | Installation in a 100 × 150 mm speaker location |
| Included grilles | Black frames with satin-silver accents, black steel mesh and an electroformed JL Audio logo |
| Package contents | Pair of speakers, mounting adapter plates and grilles |
FAQ
Does the tweeter need a separate mounting location?
No. It is mounted above the main driver, so both parts fit in one speaker location.
When are the included adapter plates useful?
They are intended for a 100 × 150 mm speaker location. If your car has a location of that size, the plates help you mount these round speakers there. Check the specific mounting area for fit.
Can I use the car’s original grilles?
The low-profile tweeter allows the speakers to fit behind most original grilles. Available clearance depends on the particular grille in your car, so check it before installation.
What do the breakaway mounting tabs change?
They let you choose four-hole or two-hole mounting. The suitable arrangement depends on the vehicle’s mounting location.
When should I choose the supplied grilles?
Use them if the speaker locations will remain visible and you want to fit the grilles included with the pair. If you plan to retain the original vehicle grilles, first check that there is enough room beneath them.
Will this pair work with my head unit or amplifier?
The supplied description cannot confirm that: it does not state impedance, power handling or connector type. Check those details against the requirements of your system before connecting the speakers.
