Focal's Polyglass CVX speakers use precision craftmanship and advanced materials to make a strong sonic impression. These sturdy 2-way speakers bring superb sound quality to the factory speaker locations in your vehicle.

2-layer woofer cone
The 100 CVX 4" speakers feature a Polyglass cone that's created by depositing a layer of hollow glass microbeads over a layer of cellulose pulp. This unique material combines the warm sound of cellulose with the incredible strength of glass, for a cone that responds rapidly with extremely low resonance. A butyl rubber surround helps control cone movement and promotes high power handling. The ABS plastic basket provides a strong, non-resonant housing for accurate, uncolored sound.

Unique tweeter design
Focal designed the aluminum inverted dome tweeter to disperse high frequencies evenly for a big, open soundstage. You can rotate the tweeter to improve definition in your listening area. The built-in 2-way crossover ensures a smooth transition from lows to highs, so vocals and instruments sound natural. Grilles are included.

Priced per pair

Product Highlights:

  • 2-way 4" speakers (pair)
  • Polyglass woofer with butyl rubber surround
  • rotating aluminum inverted dome tweeter
  • non-resonant ABS/glass fiber basket
  • built-in 12 dB/octave crossover
  • grilles included
  • 2-50 watts RMS power range (100 watts peak)
  • frequency response: 90-20,000 Hz
  • sensitivity: 90 dB
  • depth: 2-5/16"
  • warranty: 1 year
  • Our 60-day money-back guarantee

Hands-on research

What's in the box?

Download owner's manual

  • Two 4" Coaxial speakers
  • 2 Grilles
  • 2 Grille mounting rings
  • 2 Mounting gaskets
  • 8 Speed clips
  • Eight 1" Self-tapping screws
  • Owner's manual (English/ French)
  • Focal window sticker

Features and Specs

Design 2-way
Tweeter Design Inverted Dome
Tweeter Composition Aluminum
Woofer Composition Polyglass-coated cellulos
Woofer Surround Butyl Rubber
Parts Warranty 1 Year
Labor Warranty 1 Year
Sensitivity 90 dB at 2.83 volts
Frequency Response 90 - 20k Hz
RMS Power Range (Watts) 2-50
Peak Power Handling (Watts) 100
Impedance (Ohms) 4
Top-mount Depth (Inches) 2 3/8
Bottom-mount Depth (Inches) 2 1/2
Cutout Diameter or Length (inches) 3 3/4

Product Research


Polyglass Cone: The woofer cone has a cellulose pulp base and is coated with a uniform deposit of hollow glass microballs. The addition of the Polyglass layer significantly increases the cone's rigidity without adding much weight. This combination takes advantage of the accuracy and neutrality of the hard outer surface, but maintains the superior damping characteristics of the cellulose pulp.

Surround: The butyl rubber surround is resistant to ultraviolet rays, temperature extremes, and humidity to add to the speaker's reliability and longevity.

Basket: The woofer features a basket made of 20% fiberglass filled ABS.

Voice Coil: The voice coil is wound around a 1" diameter low-mass Kapton former, ensuring no coil deformation.

Inverted Dome Tweeter: The tweeter is an inverted aluminum dome, producing a broad sound stage. The tweeter rotates on its post, so it can be pointed toward the listener.

Crossover: The 12 dB/octave crossovers built onto the back of the speaker use audiophile grade polypropylene capacitors and air core inductors to ensure high definition and a dynamic sound quality.

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 verify what’s in the box, 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.

Focal Polyglass 100 CVX Reviews

Average Customer Review:

7 reviews
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Nice midrange

Written By Anonymous, Rye, NY on Monday, August 19, 2013

Crutchfield Customer Review (What's this?)

Very nice midrange. High quality construction and design, even if made in China. Great punch even though it is only a 4"speaker.

Pros: Great construction quality and good performance from a 4" woofer.

Cons: Tweeter adjustment is by rotation, angle not as adjustable as I thought.


Written By Ford Guy, Casper Wyoming on Saturday, July 06, 2013

Crutchfield Customer Review (What's this?)

Great sounding speakers, a true upgrade from the infinity 4"s that I was running. Crutchfield had them on my doorstep 3days from ordering. Another quality purchase, Thanks guys!

Pros: Very clean and crisp sound at high volume

Cons: Non

Well worth money spent

Written By Josh, Michigan on Wednesday, June 12, 2013

Crutchfield Customer Review (What's this?)

Im very pleased with the sound coming from these little speakers.Surprized even, at how clear the highs are and they produce strong mid-range.I've coupled my 4 cvx-100's with the alpine mrp-300 4 channel amp (I'll review it later).Great combination of amp and speaker.I was having a problem with my highs and mids keeping up with the bass from 2 jl 10's, but no more.ALSO i've bought a EQ to bring out the best in these.I HIGHLY SUGGEST BUYING AN EQ,especially if your an autophile like me.Auidocontrol is the best but if your budget doesnt permit that go for the clarion.As a side note, i installed these in a 1990 chevy 1500 regular cab,crutchfeild said i would have to do some work to get them in because they were to deep.all i had to do was double stack the provided install plates and cut out a section of the grill on the b-pillars so the tweetes could come through,then installed focals provided grills over top.DONE.for the fronts i used another crutchfield product called select increments.Its a 4 inch enclosure thats incredibley versitle(ill review later)and i belive made my front speakers sound just a bit bigger than my rears.Overall i dont think you can go wrong with these for the price,they are heavy for there size,handle power well and are crystal clear at high volums..

Pros: Great price,high quality manufacturing,Sound clarity

Cons: They are sort of deep but so long as you can do some customizing your good

Focal Polyglass 100 CVX

Written By Tony M, Indianapolis, IN on Friday, May 17, 2013

Crutchfield Customer Review (What's this?)

Great sounding speakers. This is a huge upgrade from standard speakers. This speaker is very efficient and is well worth the price

Pros: Sound quality

Cons: none

A successful experiment

Written By Eric-T, 6000 Ft on Thursday, April 25, 2013

Crutchfield Customer Review (What's this?)

I have been building speakers for 20 years. I am sorry but I refuse to bury a tweeter under an angled grill in the dash and have all of the midrange get fired into my knee by a 6 1/2 inch woofer. I listen to jazz, acoustic blues and occasionally classical music.

I recently bought a 1995 Jeep Grand Cherokee with defunct head unit and speakers. The advantages of this kind of vehicle is that you can modify without being too worried about reselling and your wife's aesthetics are not an issue.

I took out the tweeters, cut the factory plug off and threw them away. I got these Focal Polyglass 100 CVX speakers for a steal. For those of you building a custom system be aware that these drivers are sonically excellent and contain a built in crossover which saves lots of money and simplifies the installation. They are compact enough that I was able to mount them vertically on the dash of the Grand Cherokee. I did this by designing and fabricating a set of speaker brackets out of copper clad steel strap and brass. I soldered the elements together and painted them and the modified grill the same color as the dash. The sound stage is excellent. The timber and attack of trumpet, saxophone and violin are superior in every way to squeak and knee speaker configuration.

The Polyglass 100 CVX from Focal deliver "high end" sound and are the perfect size for the cabin of an automobile.

Pros: Crossover is built in and very high quality - saves money and time Four inch midrange is perfect size for an automobile cabin. Superior sound reproduction

Cons: Speakers are fine. Wish I could have included photograps of my installation. Sorry

Great Product, Great Price!

Written By NateB, Reading, PA on Monday, April 15, 2013

Crutchfield Customer Review (What's this?)

I put 4 of these in my classic Jag XJ, love how the tweeter can be angled up from the door location to raise the soundstage. They have really come to life after a week of regular listening! The inset crossover bits and overall quality is something that has to be seen to believe. The price you pay for this level of sound and build quality is unreal! Crossed them over at 150Hz, plan on adding a Focal sub soon to fill out the bottom end. Awesome! Fast Shipping, 18 hours from order to delivery! Go Crutchfield!

Pros: Awesome quality, Awesome Price!

Excellent product

Written By kennymac, philadelphia on Tuesday, July 12, 2011

I'm no audiophile, but I appreciate good music. I've also been a musician for years so I do understand the benefit of balance in a speaker system. These speakers are crystal clear and very transparent, an excellent addition to any auto sound system. They put out plenty of volume, and just rock my SUV. From Fleet Foxes to Soundgarden, these speakers do the job very well.

I never thought I would find a good pair of speakers to fit the small 4" location that my vehicle has but thankfully I found these. I'll be replacing my front speakers with Focal polyglass speakers this week, they are that good.

Product reviews from the Crutchfield Labs

Video: Introduction to Focal Car Audio
by Zak Billmeier, Ken Nail

Crutchfield's car audio experts Ken and Zak present an overview of Focal car audio products. Focal is a leading name in high-quality sound and Crutchfield is proud to have them in our lineup.

What are the Labs?

Get everything you’ll need to enjoy your new Focal Polyglass 100 CVX

Reduce ambient road noise and your vehicle's "rattles," for better sound inside your car.
You may need speaker wire to connect your speakers to your amp or receiver.
Keep your speakers clean and dry. They compress to fit behind your speakers.
These speaker connectors are handy if you're running new speaker wire or if your speakers have oversized terminals.
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T-Spec 12-gauge Speaker Wire

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Metra Female Quick Slides

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S&G Tool Aid 87615

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S&G Tool Aid 87650

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Pro.Fit Hook Tool Set

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Pro.Fit Trim Panel Tool

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Pro.Fit Wire Worm

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Skewdriver Pro SPK4042

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Spec Tools SQR-200a Squeeze Wrench

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