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What sets C1 apart?
JL Audio designed the C1 Series C1-400x 4" speakers to be the very best they could be for the price. You'll find solid construction and finish, along with some eye-popping flair in its striking yellow mineral-filled polypropylene woofer. That woofer delivers impactful lows and is specially designed for a natural roll-off transition to the highs handled by the tweeter. And it's the aluminum edge-driven tweeter that gives the C1 Series its distinctive sound, setting it apart from other speakers at this price. You'll hear crisp detail in the high frequencies, incredible imaging, and minimal distortion no matter how you power them.
Why no grilles?
Most folks have no use for aftermarket grilles, opting to use their factory grilles for a streamlined look. With that in mind, JL Audio doesn't include grilles with the C1 Series, opting instead to incorporate those savings into building an all-round better speaker.
Features and Specs
| General | ||
|---|---|---|
| Speaker Size | 3/4 | |
| Design | 1-way | |
| Tweeter Design | 3/4" Edge-Driven Dome | |
| Impedance (Ohms) | 6 | |
| Tweeter Composition | Aluminum | |
| Woofer Composition | --- | |
| Woofer Surround | --- | |
| Parts Warranty | 1 Year | |
| Labor Warranty | 1 Year | |
| Specifications | ||
| Sensitivity (1W at 1 meter) | 91 | |
| Sensitivity at 2.83 volts | 92 | |
| Frequency Response | 4000 - 24k Hz | |
| Minimum RMS Wattage | 20 | |
| Maximum RMS Wattage | 50 | |
| Peak Power Handling (Watts) | --- | |
| Top-mount Depth (Inches) | 0 7/8 | |
| Bottom-mount Depth (Inches) | N/A | |
| Cutout Diameter or Length (inches) | 1 1/2 | |
Features
Tweeters: The 3/4" edge-driven, aluminum dome tweeters are damped by a silk surround suspension. Flush and surface tweeter mounting brackets are included.
Tweeter Dimensions:
| Frame Diameter | Cutout Diameter | Mounting Height | Mounting Depth | |
| Flush Mount | 1.675" | 1.448" | 0.248" | 0.863" |
| Surface Mount | 1.712" | Screw Holes Only | 0.748" | 0.508" (Screw Depth) |
Crossovers: The in-line tweeter crossovers are 2nd order (12 dB/octave slope) and the 30" input and 15" output wires are attached. The input wires are terminated with female quick slides and the output wires are terminated with male quick slides that plug into the terminals on the wires attached to the tweeters. The electronic tweeter protection circuit is designed to minimize the possibility of tweeter failure. It monitors current going to the tweeter and will disconnect the tweeter from the signal when it senses overload. Once the volume has been reduced, the protection circuit will reset itself automatically.
Crossover Dimensions:
- Width: 2" (3" including wire)
- Height: 1"
- Depth: 1-3/8"
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