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Focal Integration ISC 100

4" 2-way car speakers

Item #: 091ISC100

In Stock

3 Reviews | Ask Questions

Installation gear for most cars

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Focal Integration ISC 100 4" speakers

You can aim the tweeter for better high-frequency dispersion in problem vehicles.

Audiophile-grade engineering

Focal applies the same technology they use in their studio and audiophile-grade home systems to their Integration line of car speakers. Their Integration ISC 100 4" speakers use cones made of Polyglass, a material that combines the warm sound of cellulose with the strength of glass, for a woofer that plays accurately with no added resonances.

Adjustable tweeter

The Integration processed aluminum inverted dome tweeter features a built-in phase plug and wave guide, which act together to increase the power of high-frequency notes and improve the stereo soundstage. You can also tilt the tweeter for better imaging in many vehicles.

Integration speakers allow you to put Focal sound quality and construction into your vehicle without a lot of muss and fuss, so you can enjoy a dramatic jump in performance over your old speakers. Grilles are not included; factory grilles are appropriate for most installations.

Product Highlights:

  • 2-way 4" speakers (pair)
  • Polyglass woofer with butyl rubber surround
  • processed aluminum inverted dome tweeter
  • 4-ohm impedance
  • 5-40 watts RMS power range (80 watts peak)
  • frequency response: 90-20,000 Hz
  • sensitivity: 85.55 dB
  • depth: 2"
  • warranty: 1 year
  • Our 60-day money-back guarantee

Focal Integration ISC 100 Reviews

Average Customer Review:

3 Reviews

Very Good

Written by: natrpic from Springfield Mo. on October 12, 2014

2002 Chevrolet Silverado 1500
Crutchfield Customer Review (What's this?)

These are surprisingly full sounding for a little speaker.

Pros: Sound great! these are better then any 4X6 I listened to prior to buying these.

Cons: Adapter plate for a fit into a 4x6 hole is flimsy and it is not clear at all about mounting screws to hold speaker make for a very tight fit had to use a lot of pressure to get them in the hole as the screw hit edge of hole all the way around. will not knock down stars as the speakers themselves are really good.

Focal Integration ISC 100

Written by: Marc from Springfield , or on July 29, 2014

1995 Toyota Avalon
Crutchfield Customer Review (What's this?)

Sound great

Pros: The work great running off the head unit might put more power to them and see how that works

Cons: None so far

Replacing factory speakers in a 1999 extended cab silverado

Written by: Brian from Iowa on March 5, 2014

1999 Chevrolet Silverado
Crutchfield Customer Review (What's this?)

I replaced the speakers in the back extended cab area they were 4 by 5 the Focal Integration ISC 100 are 4inch and fit perfect with the adapter plate that was shipped free with purchase. I am running them off of an aftermarket kenwood hd reciver I purchased from Crutch field also I have no amp on them and they sound awsome real crips I also have a 10inch 100watt bazooka sub also to add to the bass if you are someone that likes bass i would recommend getting a sub Very satisfied would recommed. I might buy an amp also to put more power through them/

Pros: Good fit great sound better than factory

Cons: none

Hands-on research

What's in the box?

Download owner's manual

  • Two 4" Coaxial speakers
  • 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
Woofer Surround Butyl Rubber
Parts Warranty 1 Year
Labor Warranty 1 Year
Sensitivity 90.3 dB at 2.83 volts
85.55 dB at 1 watt
Frequency Response 90 - 20k Hz
RMS Power Range (Watts) 5-40
Peak Power Handling (Watts) 80
Impedance (Ohms) 4
Top-mount Depth (Inches) 2
Bottom-mount Depth (Inches) 2 1/8
Cutout Diameter or Length (inches) 3 5/8

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.

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 is angled and rotates on its post, so it can be pointed toward the listener.

Our Product Research Team

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Customer Q&A