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JL Audio ZR100-CT

Evolution™ ZR Series 1" aluminum dome tweeter

Item #: 136ZR100CT

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3 Reviews | 1 question - 1 answer

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Crisp, clean sound

JL Audio's ZR100-CT high-performance 1" aluminum dome tweeters bring out the subtle details in your music so you get a clear sonic picture of all the instruments in the stereo mix. You'll enjoy the extended high-frequency response offered by an aluminum dome, while special-design butyl rubber surrounds eliminate the shrillness that can plague lesser metal tweeters.

The crisp-sounding ZR100-CT tweeters feature strong neodymium magnets, ferrofluid-cooled for reliable performance. JL Audio's ratcheting swivel rotation (RSR) system allows you to aim these tweeters for the best possible stereo image in your vehicle.

Note: These tweeters must be used with the supplied in-line high-pass filters, or an appropriate external crossover. Failure to do so could lead to damage to the tweeters not covered under the warranty.

Installation note: You'll need a pair of our universal backstraps to install these tweeters in the factory locations.

Priced per pair

Product Highlights:

  • 1" ferrofluid cooled aluminum domes
  • flush- and surface-mount hardware included
  • in-line high-pass filters included (6 dB/octave)
  • power handling: 2-50 watts RMS (125 watts peak power)
  • frequency response: 4,000-25,000 Hz
  • impedance: 4 ohms
  • sensitivity: 89 dB (92 dB at 2.83V)
  • flush-mount depth: 9/16"
  • warranty: 1 year
  • Our 60-day money-back guarantee

JL Audio ZR100-CT Reviews

Average Customer Review:

3 Reviews

JL ZR 100 CT

Written by: ALGIES TOYOTA TUNDRA from Virginia on September 21, 2015

Crutchfield Customer Review (What's this?)

Tweeters are crisp and loud when your increase volume. I have 4 pair installed

Pros: Attractive look if you are surface mounting.

Cons: None

Best tweeters I've heard

Written by: Tony C from Nevada on February 1, 2015

Crutchfield Customer Review (What's this?)

Just Installed last week and all I can say is I wish I would have known about these way before cause now I can actually listen to my music instead of only bass.

Pros: Great Sound

Cons: None at this moment

JL tweeters

Written by: mancho from tampa, fl on November 12, 2014

Crutchfield Customer Review (What's this?)

Great tweeters. I can get all kinds of high notes out of them depending on how I equalize my full-range front JL speakers

Pros: Great sound

Cons: price, the angled mount does not have the chrome "JL" circle surrounding it like the flush mount does so it looks a little off.

Hands-on research

What's in the box?

Download owner's manual

  • 2 Tweeters installed in enhanced flush-mount fixtures (with attached 6" speaker wires terminated by female quick-slide connectors)
  • 2 External crossovers with attached 11" positive and negative speaker leads terminated by male quick-slide connectors on one end and attached 46" positive and negative speaker leads terminated by bare-tinned wire on other end
  • 2 Tweeter compact flush-mount fixtures
  • 2 Tweeter angled surface-mount fixtures
  • 2 Metal spring clips for tweeter fixtures
  • Two 1-1/4" pan-head machine screws
  • Four 1" flat-head self-tapping screws
  • 4 Crimp-on 2.8mm male quick slides

Product Research


Aluminum Dome: The ZR component system tweeters utilize a 1" ultra-light aluminum dome, delicately suspended with a synthetic rubber, positive-roll surround to damp fatiguing ringing and preserve high-frequency definition. A Nomex voice coil former is used to further reduce mass.

Neodymium Magnets: The high-energy neodymium wafer magnet and machined field structures provide a dynamically stable field for the low-mass voice coil.

Performance: Each pair of ZR tweeters is tested and matched to within 1 dB of JL Audio's reference curve to ensure optimum system performance.

High Pass Crossover: The JL Audio external high pass crossover networks (12 dB/octave) offer high-end filter components such as precisely wound air-core inductors and high-quality, low-tolerance capacitors. Tweeter protection is also incorporated into the crossover networks. The crossovers measure 0.895" in diameter and 3.285" in length.

Mounting Options: A very shallow flush-mount system makes it easy to integrate the ZR tweeter into many vehicle interiors. Two additional mounting fixtures are also included for each tweeter. The tweeters come mounted in enhanced flush mount fixtures with silver trim and a JL Audio badge. The system also comes with compact flush-mount fixtures and angled, surface-mount fixtures. The mounting dimensions for each mounting option are as follows:

Mounting Fixture Mounting Depth Mounting Height Frame Diameter Cutout Diameter
Enhanced Flush Mount 0.566"
(1.5" screw depth)
0.48" 2.126" 1.725"
Compact Flush Mount 0.454"
(1.5" screw depth)
0.45" 1.898" 1.677"
Angled Surface Mount N/A
(7/8" screw depth)
0.903" 1.826" N/A

Our Product Research Team

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Customer Q&A

1 question already asked

I have no idea but the tweeters are awesome!!! [ WENDELL K  Mar 20, 2015 ]