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The C1 Series is built as a smart, factory-replacement upgrade—but it delivers far more than the basics. True to the JL Audio name, these speakers offer sound quality that stands out in their class, providing a surprisingly rich and engaging listening experience that can turn first-time buyers into lifelong JL Audio fans.
The C1-100ct 1" aluminum dome tweeters feature an edge-driven design for smooth, accurate high-frequency response with minimal distortion. They deliver crisp detail and exceptional imaging, easily outperforming standard factory-installed tweeters.


In-line high-pass filters ensure the tweeters receive only the frequencies they’re designed for, delivering clean, distortion-free highs. Each kit includes both flush- and surface-mount hardware, making installation simple and adaptable to your vehicle’s layout.
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High quality tweeters. Sound Great. My only complaint is that the RMS is only 60 watts. These are clearly underrated as far as wattage is concerned. The dollar value is superior to any competing product in this pri e class. JL continues to set the product standard in Car Audio. Definitely recommend ordering from this company in the future.Shipping was lightning fast. Zero problems with my order. 10 out of 10 all day!
These are some expensive tweeters for an entry level but the quality is so excellent, which JL Audio is famous for. Its loud but its not overbearing and not piercing to the ears, so you can listen to it for whole day without some pain in your ears
The highs are so much better now after I got these tweeters replacing my old ones. Very happy with what I got now.
Installing them on my Jeep was easy. Its's bright but it's not piercing too much on my ears when I try to push the volume. A huge upgrade from the tweeters on my Jeep
Honestly, not a night-and-day difference from the factory ones, but the sound is cleaner and more reliable. Easy install too. JL makes quality stuff.