JL Audio M100-CT-SG-WH - White with Sport Grilles

100W 1.0" (25 mm) M-Series White Marine Tweeter - Pair

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JL Audio 1.0" M-Series Marine Component Tweeters

Specifically engineered polymer baskets are corrosion and UV-resistant and encapsulate the tweeters' motor system to prevent corrosion. JL Audio utilizes Ultraviolet testing chambers (to simulate years of sun exposure) and Salt Fog chambers (to simulate years of exposure to salt-water environments) to ensure that the M-Series not only sound great in your boat, but will also sound great for many, many years.

1-inch pure silk dome tweeter

High Performance Highs

A 1.0" pure silk dome component tweeter handles the high-frequency duties within the M-Series. Silk has been chosen for its lightness, excellent damping properties and smooth response characteristics that ultimately result in extremely transparent audio. You will appreciate the clean, articulate high-frequency response of the M-Series dome tweeter, especially at higher volume levels. The tweeter is optimized to provide sound that will cut through even the most demanding of marine environments. This tweeter MUST be used with an appropriate crossover network or high-pass filter. A pair of inline high-pass filters is supplied in this kit. Please use them if no other crossover is being applied.

General Features:


  • M-Series Marine Component Tweeters
  • Power Handling:
    • RMS*: 200 watts per set/ 100 watts each side
  • Recommended Power Range*: 40 - 175 watts RMS each
  • 1.00" pure silk dome tweeter
  • Nominal impedance: 4 ohms
  • Passive high-pass filters included
  • Centrex® UV resistant polymer baskets and grilles
  • High-effiiciency design with oversized neodymium motor system
  • Ferrofluid-cooled and damped for enhanced response and power handling
  • Surface-mount and flush-mount fixtures included
  • Frequency Response: 4,000 - 25,000 Hz ± 3 dB

  • Sensitivity: 91.0 dB
  • Flush-mount Cutout (tweeter): 1.875"
  • Flush-mount Depth (tweeter): 0.70"
  • Authorized Internet Dealer
  • 2 Year Manufacturer's Warranty
  • Priced Per Pair

*With supplied crossover

Tweeter Specifications

Hi-Res Audio Compatible
This feature refers to if the product is capable of Hi-Res Audio (HRA) playback.
Tweeter Size
Refers to the size of the tweeter. Typically, smaller tweeters produces less output with higher frequency response.
Tweeter Design
Designs such as cone, dome, semi-dome, balanced dome, and whizzer are most popular. Cone tweeters are simple, efficient and typically are the most reasonably priced. Dome tweeters are used in most home speakers, and provide a smoother and more accurate sound. Semi-dome design is one with a dome placed inside a cone. A Balanced dome driver is a semi-dome with equal reproduction area given the cone and dome portions of the driver. A whizzer tweeter is a separate tweeter cone driven by the voice coil of the woofer.
Tweeter Composition
Materials such as polypropylene, silk, cloth, and paper are the most common, where as many more recent tweeters are now manufactured with composites such as Aluminum, Titanium, Mylar, and other materials.

PEI is an acronym for "Polyetherimide" which is an amorphous, amber transparent, high-performance thermoplastic.

Flush Mount
If the speaker or tweeter is flush mountable, then it can be installed flush to the mounting surface.

When installing a flush mount tweeter, make sure that there is enough room behind the mounting surface for the tweeter and magnet. Check the mounting depth with your specific vehicle.

Surface Mount
If the speaker or tweeter is surface mountable, then it can be installed to be raised above the mounting area.

When installing a surface mountable tweeters, make sure that there are no obstructions that will prevent the tweeter from being installed correctly.

Angled Mount
If the speaker or tweeter is able to be angle mounted, then the installed tweeter can be positioned at an angle. An angle mounted tweeter can improve the audible sound quality of your system.

When installing a angle mountable tweeters, make sure that there are no obstructions that will prevent the tweeter from being installed correctly.

Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
225 watts
RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
100 watts
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
91 dB
Frequency Response
The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
45 - 25000 Hz
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
4 ohms
Top-Mount Depth
The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.
Priced Per
Car Tweeters are typically sold in pairs so you will receive 2 tweeters for each purchase on tweeters marked "Priced Per Pair". If a tweeter is marked "Priced Per Each" then the tweeter is sold individually and each purchase you make will result in 1 tweeter. High-powered tweeters are typically sold per each tweeter.

Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
2 years
Labor Warranty Duration
2 years
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
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1 Star

Average Attribution Rating


Northglenn, CO


August 31, 2014

These are some great sounding tweeters. I have these ones in Grey. I got them on sale for $99. Wish I could find a couple pair more. I had wetsound 6.5's in my transom and the tweeters blew. Replaced one pair to try the out and these sound way better. They are not as harsh, maybe because of the silk dome. I like that they came with tweeter protection.

12 of 15 found this helpful

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San Diego, CA


December 18, 2012

after i installed the speaker. they are really loud and clear sound.
they have high quality sound
i recommend to everyone

11 of 14 found this helpful

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Browse 1 question and 2 answers
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Why did you choose this?
Sonic Electronix Store
Hard to find low profie surface mount speakers.
John C on Jul 7, 2016
they sound good
joaquin l on Jun 2, 2016

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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: JL Audio M100-CT-SG-WH - White with Sport Grilles

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JL Audio M100-CT-SG-WH - White with Sport Grilles

100W 1.0" (25 mm) M-Series White Marine Tweeter - Pair


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