JL Audio M100-CT

Pair of 1" marine tweeters

  • JL Audio M100-CT


  • JL Audio M100-CT


  • JL Audio M100-CT


Our take on the JL Audio M100-CT

by Ken Nail
JL Audio

Perk up your maritime music with JL Audio's M100-CT marine tweeters. A good set of tweeters can open up the sound of your boat's system, broadcasting all the little details that make your music sparkle.

These silk dome tweeters radiate the high frequencies in a broad pattern for excellent sound coverage, and they're treated to withstand exposure to sun and moisture. Corrosion- and UV-resistant polymer housings ensure that they'll last for many seasons on the water. JL Audio includes all the hardware you'll need for flush-mounting these durable tweeters.

The UV-resistant polymer basket encases and protects the entire structure, and as an added bonus the UV protection ensures the grilles will stay white, looking factory-fresh even after years of sun exposure.

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  • 1" silk dome tweeters treated to withstand UV and salt/spray exposure
  • UV-resistant polymer housings
  • flush-mount hardware included
  • passive external crossovers (5,000 Hz with 12 dB/octave slope)
  • power handling: 40-100 watts RMS (175 watts peak power)
  • frequency response: 5,000-25,000 Hz
  • sensitivity: 91 dB
  • flush-mount depth: 15/16"
  • warranty: 1 year
  • Our 60-day money-back guarantee

Hands-on research from the Crutchfield Labs (what are the Labs?)

Features and Specs
Design 1-way
Tweeter Design Dome
Tweeter Composition Silk
Woofer Composition ---
Woofer Surround ---
Parts Warranty 1 Year
Labor Warranty 1 Year
Sensitivity 91 dB
Frequency Response 5000 - 25k Hz
RMS Power Range (Watts) 40-100
Peak Power Handling (Watts) 175
Impedance (Ohms) 4
Top-mount Depth (Inches) 0 15/16
Bottom-mount Depth (Inches) N/A
Cutout Diameter or Length (inches) 1 7/8
Product Research
What's in the box?

  • 2 Tweeters with attached 31" wires terminated in female quick slides
  • 2 Flush-mount tweeter housing cups
  • 2 Tweeter spring clips
  • Two 63" lengths of speaker wire with in-line high-pass filters (has tinned bare wire on one end and male quick slides on the other end)
  • Two 1-3/16" Tweeter housing mounting bolts

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.


Overview: The tweeters are 1" treated silk domes, specially formulated to withstand UV and salt-spray exposure. The dome tweeters use an oversized neodymium magnet for higher efficiency levels and are Ferrofluid-cooled and damped for improved response and power handling capabilities. The tweeters come flush mount cups.

Mounting Specifications:

  • Mounting Height: 0.461"
  • Mounting Depth: 0.904"
  • Frame Diameter: 2.384"
  • Cutout Diameter: 1.858"

Crossovers: The crossovers are 12dB/octave high-pass filters in-line on the supplied speaker wires.

Polymer Housing And Grille: The Centrex, UV-resistant polymer mounting cups and grilles protect the tweeter from the marine environment.

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JL Audio M100-CT Reviews

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5 out of 5

Tweeter add-on

Written By Russ R, West Chester, OH on Saturday, August 23, 2014
Crutchfield Customer Review (What's this?)
I bought these for my 2009 Yamaha 232 Limited boat. The factory Kicker speakers are located inches off of the floor facing each other. They do a fine job with the factory Sony head unit as long as the boat isn't moving. With wind noise and the engines running at 9K RPM the music would disappear. These add-on tweeters put sound up closer to ear level. Now running down the lake at 30MPH we can still hear the tunes. They were easy to install and wired directly into the factory speakers wiring.
They look and sound great. They can be installed flush or surface mount. I used a hole saw and flush mounted mine. There is plenty of wire to reach the factory speakers.
You get what you pay for. JL Audio is top notch but it will cost you. The price is more than I wanted to spend but I know that I bought high-end audio gear that does exactly what I needed it to do.
1 out of 1 people found this helpful
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Add accessories for the JL Audio M100-CT

Designed for marine installations, the tinned copper wire is fully fire-rated for concealed installations. See all categories & accessories

JL Audio XM-WHTSC16 Speaker Wire 16-gauge marine speaker wire — priced per foot
14 people say
Your Price: $0.49
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For a more in-depth review and enhanced detailed information on the JL Audio M100-CT, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_136M100CT/JL-Audio-M100-CT.html ).