JL Audio C7-100ct
C7 Series 1" aluminum alloy edge-driven dome tweeter (Single)
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JL Audio C7-100ct | C7 Series 1" Component Tweeter (Single)
The JL Audio C7-100ct (Part Number: 010-03128-00) represents the pinnacle of automotive high-frequency reproduction. This flagship tweeter is engineered from the ground up to deliver unparalleled clarity and a pure, precise audio experience. Featuring a unique corundum ceramic-coated aluminum dome, it is designed to perform as a true piston well beyond the limits of human hearing, making it the definitive choice for sophisticated active sound systems.
Product Highlights
Corundum Ceramic-Coated Diaphragm: The 1-inch (25 mm) aluminum alloy dome is treated with a specialized corundum ceramic coating. This material provides extreme stiffness and low mass, ensuring the dome maintains its shape at high frequencies to eliminate distortion and harshness.
Treated Silk S-Roll Surround: The diaphragm is suspended by a treated silk, s-roll surround that provides optimal damping without restricting excursion. This design helps the C7-100ct maintain a smooth, natural soundstage even during intense high-frequency peaks.
DMA-Optimized Neodymium Motor: Utilizing JL Audio’s proprietary Dynamic Motor Analysis (DMA), the high-density neodymium magnet and U-Yoke motor topology are precisely modeled to minimize even-order distortion. This results in incredibly faithful transient reproduction and crystalline detail.
Designed for Active Systems: These drivers are sold individually and do not include passive crossovers. They are intended for use with a high-quality Digital Signal Processor (DSP), such as a VXi amplifier, allowing the system designer to customize crossover points and timing for a perfect in-cabin blend.
Key Features
Acoustically Designed Housing: The shape of the tweeter housing is specifically engineered to boost sensitivity in a controlled bandwidth, helping to flatten the frequency response and improve directivity control across the dashboard.
Under-Hung Voice Coil: Wound with copper-clad aluminum wire onto an aluminum former, the under-hung voice coil design ensures minimal distortion and maximum control over the diaphragm's movement.
Ferrofluid Cooling: The magnetic gap is filled with ferrofluid to act as a secondary suspension element. This provides consistent thermal management and damping, allowing the tweeter to perform reliably during long, high-volume listening sessions.
Exceptional Bandwidth: Depending on your chosen crossover slope, the C7-100ct can reliably reproduce frequencies from 3,000 Hz all the way up to 30,000 Hz, revealing textures in high-resolution audio files that standard tweeters miss.
Technical Specifications
| Feature | Specification |
| Part Number | 010-03128-00 |
| Speaker Size | 1.0 in (25 mm) |
| Power Handling (RMS) | 100 Watts |
| Power Handling (Peak) | 200 Watts |
| Impedance | 4-Ohms |
| Frequency Response | 3,000 Hz – 30,000 Hz |
| Efficiency | 86.5 dB @ 1W/1m |
| Flush Mount Depth | 0.73 in (19 mm) |
What’s In The Box?
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(1) C7-100ct Component Tweeter (Single)
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(1) 15 µF Protection Capacitor (Must be connected in all installations)
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(1) Flush-mount fixture & (1) Surface-mount fixture
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(1) Metal spring clip for flush mounting
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Mounting screws and owner's manual
What Others Are Saying
Eddie was great - SDCS installed a new head unit in my 2019 4Runner. He was honest in his opinions regarding the options I was considering. Pricing was also good - he was able to reuse some of my existing installation kit so I saved a bit of $$.Installation was clean and fast and he took the time to walk through the features before I left. Highly recommend!!
I had a great time at this shop! The staff really knows their stuff and took the time to explain the different options without pressure. Installation was quick, clean and professional. Everything looks factory and sounds amazing. The prices were fair and customer service was above and beyond. I highly recommend this place if you're looking for quality car audio and excellent service.
Those guys are really professional! I had a new Alpine floating head unit installed in my 2008 Mercedes, and it feels like a brand-new car. The installation was super clean. At first, the sound wasn’t the same as the factory stereo, but Kevin tuned it to be just as good—if not better—without adding any new amps. They even used my factory GPS antenna so I don’t have extra wires hanging out. On top of that, they matched the online price. Big thanks to Kevin and Eddie—highly recommended!
Kevin was awesome, he took his time and explained everything to me. I went in initially for a dash cam install and then decided to get a sub and amp installed as well. Both turned out great and will be returning if I need more work done.
Came In not knowing what to expect when suddenly my stereo stopped working. Spoke with Kevin in the front and after a VERY fast diagnosing they discovered my wiring was incorrect. After only about 45 minutes total being in the store I was on my way to the beach with a working stereo again! Thank you so much SDCARSTEREO
Highly recommend Kevin and the team at San Diego Car Stereo for any issues with aftermarket stereos. I bought a car with an aftermarket stereo and AC unit that wasn’t working properly—specifically, the heat wasn’t functioning due to an improper setup. I had several people look at it with no luck, and even the dealership basically refused to help because it was an aftermarket install. I came to Kevin and his team over the holidays feeling pretty defeated, but he was confident he could get the heat working before I headed back to a Colorado winter. Sure enough, he got it done.
FAQ
Do products purchased from San Diego Car Stereo come with a warranty?
Yes, all products come with a 1-year manufacturer warranty unless otherwise stated. This covers any defects excluding physical damage.
Are these products brand new?
Yes, every product we sell is 100% brand new, unused, and comes in original manufacturer packaging unless clearly marked otherwise.
Do you offer installation services?
Yes, we offer professional installation services at both of our San Diego Car Stereo locations. Our expert technicians have over 50 years of combined experience to install all of your car, marine, or offroad audio needs. Stop by or give us a call to schedule an appointment to get a quote in person.