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JL Audio C1-100ct C1 Series 1" aluminum dome tweeters

Item # 13699049

After an extensive tour of JL Audio HQ, I got the opportunity to talk to their engineering and...

Find what Fits your vehicle

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After an extensive tour of JL Audio HQ, I got the opportunity to talk to their engineering and...

Item # 13699049

In stock

Deeply discounted installation gear

C$119.95 pair

About the JL Audio C1-100ct

Alexander H.

Starter speakers like no other

After an extensive tour of JL Audio HQ, I got the opportunity to talk to their engineering and development team about the current JL Audio lineup and upcoming projects. Given all the work they're doing with premium car audio, I was surprised by how excited they were for customers to hear their workhorse C1 Series — speakers designed for drivers simply looking for a sensible factory speaker replacement, not necessarily an audiophile-grade solution. The reason for that excitement, once I heard it, made perfect sense — every JL Audio speaker must uphold the quality and sound associated with the name. You may be looking for something that's just listenable, but what you'll get with the C1 Series is an audio experience that puts it at the top of its class. And then, just maybe, you'll end up being a JL Audio fan for life.

Starter speakers like no other

After an extensive tour of JL Audio HQ, I got the opportunity to talk to their engineering and development team about the current JL Audio lineup and upcoming projects. Given all the work they're doing with premium car audio, I was surprised by how excited they were for customers to hear their workhorse C1 Series — speakers designed for drivers simply looking for a sensible factory speaker replacement, not necessarily an audiophile-grade solution. The reason for that excitement, once I heard it, made perfect sense — every JL Audio speaker must uphold the quality and sound associated with the name. You may be looking for something that's just listenable, but what you'll get with the C1 Series is an audio experience that puts it at the top of its class. And then, just maybe, you'll end up being a JL Audio fan for life.

Take your highs to a new level

These C1 Series C1-100ct 1" aluminum dome tweeters stand apart from other component tweeters at this price. Their edge-driven design gives you a smooth response and minimizes distortion. You'll experience crisp detail in the high frequencies and incredible imaging that will make your factory tweeters hide in shame. Included in-line high-pass filters ensure that these tweeters receive the right frequencies, and JL Audio supplies flush- and surface-mount solutions for the perfect installation.

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Product highlights:

  • Featured in our article: Best car speaker lines for 2024
  • 1" aluminum edge-driven dome tweeters (pair)
  • flush- and surface-mount hardware included
  • in-line high-pass filter
  • handles up to 60 watts RMS
  • frequency response: 3,600-22,000 Hz
  • sensitivity: 94.5 dB at 2.83 volts
  • top-mount depth: 3/8"
  • warranty: 1 year
  • MFR # 99049

What's in the box:

  • 2 Tweeters (with 6" wires attached)
  • 2 Crossovers
  • 2 Flush mount housings (tweeters installed)
  • 2 Surface mount housings
  • 2 Metal spring clips (for flush mounting)
  • Four 5/8" Flat head screws
  • Two 25mm Stud bolts
  • Two 10mm Stud bolts
  • 2 M5 Nuts
  • Owner's manual

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Customer reviews for JL Audio C1-100ct

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Average review:

4.5 out of 5 stars
68 reviews

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More details on the JL Audio C1-100ct

Pat M.

Features & specs

General
Speaker Size 1
Design 1-way
Tweeter Design Edge-Driven Dome
Impedance (Ohms) 4
Tweeter Composition Aluminum
Woofer Composition ---
Woofer Surround ---
Parts Warranty 1 Year
Labor Warranty 1 Year
Specifications
Sensitivity (1W at 1 meter) 91.5
Sensitivity at 2.83 volts 94.5
Frequency Response 3600 - 22k Hz
Minimum RMS Wattage 20
Maximum RMS Wattage 60
Peak Power Handling (Watts) 150
Top-mount Depth (Inches) 0 15/16
Bottom-mount Depth (Inches) N/A
Cutout Diameter or Length (inches) 1 3/4
Mounting Height (Inches) 0.33
Frame Width 1.97
Frame Length 1.97

Product Research

Features

Tweeters: The 1" 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 1.970" 1.734" 0.330" 0.931"
Surface Mount 2.005" Screw Holes Only 0.872" 0.535" (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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Customer Q&A

9 questions already asked

Q
Are these loud?
shaun  Mar 26, 2024
1 answer
A
We do not qualify speakers by loudness, Shaun. There are many factors that affect overall loudness, with wattage delivered by your receiver/amp playing a big role. These JL Audio C1-100CT tweeters can handle 60-watts RMS, and have a clear, crisp, and detailed playback tone. They are also extremely efficient (94.5 dB at 2.83 volts) so they will also work well when powered from factory or aftermarket radios. Personally, these are some of my favorite tweeters for the frequency response (3,600-22,000 Hz). I hope this helps!
bo  Mar 26, 2024 (Staff)
Q
Do these pair good with the Jl audio c2-525x 2-way speakers ?
alex  Jun 05, 2023
1 answer
A
Greetings Alex, and thank you for your question. The C2s use a silk dome which is smoother, less bright than the C1 tweeters which are aluminum domes. These tweeters will be brighter than the C2 tweeters.
hogan  Jun 05, 2023 (Staff)
Q
Will these work in 2023 outback front dash ?with Focal coaxial door 6x9 s
chris  Oct 08, 2022
1 answer
A
We do not have any preliminary info on the 2023 Outback sadly, Christopher. I can take a close look at the 2022 Non Harmon Kardon package with the 11.6 LCD radio however. Subaru has been rocking a 6x9 in the front doors and some sort of tweeter location on the corner dash for a while now, and they probably are going to stick with what works! If the layout and general depth is similar to the 2022 model you should be able to use this Metra bracket in the handy link below to mount your C1-100ct tweeters. You do usually need to drill a hole with a hole saw into the center of this bracket, and use the flush mount cup included for mounting. You can also consider using the JL C1-690's for the whole front stage as the tweeters have the crossover in-line on the tweeter wiring, making for easy install in most factory setups. Either way you go with JL, you know it's going to sound great! https://www.crutchfield.com/p_120823016/Metra-82-3016-Speaker-Mounting-Brackets.html https://www.crutchfield.com/p_13699046/JL-Audio-C1-690.html
bo  Oct 08, 2022 (Staff)
Q
Hello I'm running 6.25 component front, 6x9 3-way's rear doors, with an audio tuner all powered by a 4 channel amp. As well as a mono powered 12" sub in the cargo. I'm wondering if supplementing my system with these will help with range equity at higher volumes. If so how would I wire these into my system and where would be the best install spot; non-specific, i.e front pillars, rear pillars, cargo area? I drive a Honda Pilot. Thanks!!
leon  Jun 20, 2022
1 answer
A
It sounds like you have a pretty sweet setup, Leon! IF you feel like you need some more cymbals and hi-hats to even out the bass from the 12" sub, you can always add another set of tweeters for a total of 4. I would recommend matching the tweeter construction material, just to make sure all those tweeters mesh well together. If you are using aluminum tweeters in the front components now, the JL C1-100ct are an easy add. If your 4 channel amp is 2 ohm stable, you can run fresh wires from channels 1 and 2 and use the included inline crossovers with the JL C1-100ct tweeters. Install location is captains choice there, where ever you feel is best and will add the most to the sound field. I hope this helps!
bo  Jul 07, 2022 (Staff)
Q
will these tweeters fit in my 2011 frontier sv, crew cab ?
jason  Mar 22, 2022
1 answer
A
For additional details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle.
kenneth  Mar 24, 2022 (Staff)
Q
Are these plug and play on my 2020 Tacoma?
jeff  Aug 02, 2021
1 answer
A
Yes it is,as long as you have aftermarket HU .Factory doesn't have the power to make these sound good
reynaldo  Aug 02, 2021
Q
How big is it? Can it fit in my 1996 Chevy 1500 cheyenne??
icarcamo2  Dec 24, 2020
1 answer
A
You can check to see if this will fit your vehicle by using our Outfit My Car tool: http://www.crutchfield.com/car/carselector.aspx For additional details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle.
thomas  Jan 12, 2021 (Staff)
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