Chat
Contact us
Close contact box
Connect ID #
899 118 857 4
Connect ID #
899 118 857 4
Don't wait on hold. We'll call you back when it's your turn to talk with the next available .
Please enter your name  
Please enter your phone number  
Please enter a message  

Calls may be recorded for training and quality control purposes.

We are located in Virginia USA.

Thank you. We will be calling you .
We're sorry. We have encountered a problem.

Focal ISU 690 Universal Integration Series 6"x9" component speaker system

Item # 091ISU690

You're ready: to do away with unbearable factory sound and to gain a totally authentic experience listening to...

Find what Fits your vehicle

Remove

Checking fit...

You're ready: to do away with unbearable factory sound and to gain a totally authentic experience listening to...

4 questions - 4 answers

Item # 091ISU690

Other options

About the Focal ISU 690

Alexander H.

Upgrade in style

You're ready: to do away with unbearable factory sound and to gain a totally authentic experience listening to music in the car. With Focal's Universal Integration Series speakers installed in your car, a new era has begun — one in which it's easy to enjoy every moment of your drive. Focal provides such a dramatic boost in sound quality by applying much of the same technology in these car speakers that they use in their studio and audiophile-grade home systems.

Upgrade in style

You're ready: to do away with unbearable factory sound and to gain a totally authentic experience listening to music in the car. With Focal's Universal Integration Series speakers installed in your car, a new era has begun — one in which it's easy to enjoy every moment of your drive. Focal provides such a dramatic boost in sound quality by applying much of the same technology in these car speakers that they use in their studio and audiophile-grade home systems.

Superior materials and design

Focal's ISU 690 component speaker system employs a polyglass 6"x9" woofer cone to give you a warm, natural sound with enhanced strength for accurate playback with no added resonances. An aluminum/magnesium inverted dome tweeter, backed by an in-line crossover, delivers astonishing detail in the high range and integrates an acoustic horn design for an improved soundstage across your dash. Focal also gives you two mounting options for a smoother installation. 

High sensitivity design

Planning to drive these speakers off a head unit? No problem. They're designed to take advantage of every bit of power supplied to give you the best audio quality possible. However, Focal's famous sound soars when powered by an aftermarket amp!

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

Grilles are not included; the factory grilles should be suitable for most applications.

READ LESS

Product highlights:

  • component speaker system includes two woofers and two tweeters with inline crossovers
  • 6"x9" polyglass woofer with butyl rubber surround
  • aluminum/magnesium inverted dome tweeter with acoustic horn design
  • tweeter installation accessories included
  • 4-ohm impedance
  • handles up to 80 watts RMS power range (160 watts peak)
  • frequency response: 55-21,000 Hz
  • sensitivity: 93.6 dB
  • woofer top-mount depth: 3-5/16"
  • grilles not included
  • warranty: 1 year
  • MFR # FOCAL ISU 690

What's in the box:

  • Two woofers
  • Two inverted dome tweeters (each with 5" length of speaker wire attached)
  • 2 Bottom mount woofer adapters
  • 2 Flush mount tweeter housings (with tweeters installed)
  • 2 Angled surface mount tweeter housings
  • Two 18" Lengths of speaker wire with in-line tweeter crossovers
  • Two 7" Lengths of speaker wire with in-line woofer crossovers
  • 2 Woofer mounting gaskets
  • 8 Speed clips
  • Four 1" Flathead screws
  • Eight 1" Pan head screws
  • User manual (English/ French/ German/ Italian/ Spanish/ Portuguese/ Dutch/ Russian/ Polish/ Arabic)
  • Focal window sticker

Customer reviews for Focal ISU 690

Loading reviews...

Average review:

4.5 out of 5 stars
59 reviews

Thanks for submitting your review

Filter by rating

Customer photos

Customer provided image, click to load a larger version.
Customer provided image, click to load a larger version.

Sort reviews

Sort by:
Items per page:
View page:

Verified customer (What's this?)
Verified employee review (What's this?)

Reviewed on Samsung.com

This review was collected as part of a promotion

Pros:

Cons:

Crutchfield response
Customer provided image, click to load a larger version.
<< >>

More details on the Focal ISU 690

Pat M.

Features & specs

General
Speaker Size 6X9
Design 2-way
Tweeter Design Inverted Dome
Impedance (Ohms) 4
Tweeter Composition Aluminum/Magnesium
Woofer Composition Polyglass
Woofer Surround Butyl Rubber
Parts Warranty 1 Year
Labor Warranty 1 Year
Specifications
Sensitivity (1W at 1 meter) N/A
Sensitivity at 2.83 volts 93.6
Frequency Response 55 - 21k Hz
Minimum RMS Wattage ---
Maximum RMS Wattage 80
Peak Power Handling (Watts) 160
Top-mount Depth (Inches) 3 5/16
Bottom-mount Depth (Inches) 3 3/4
Cutout Diameter or Length (inches) 0
Mounting Height (Inches) 0.266
Frame Width 6.63
Frame Length 9.437
The Focal ISU 690 replaces these items:

Product Research

Woofer
Tweeter

Woofer

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.

Woofer Crossovers: The included 7" woofer wires have integrated crossovers. The woofer ends of the wires have female quick-slides that easily connect to the woofer terminals.

Tweeter

Inverted Dome Tweeter: The tweeter is an inverted aluminum and magnesium dome, producing a broad sound stage. The tweeter has a Neodymium magnet to provide a powerful magnetic field for the voice coil, while still maintaining the tweeter's compact dimensions.

Note: When flush mounted, the tweeters are pressure fit into the opening, with nothing holding them from behind, so the cutout diameter is very important.

Mounting Options: The tweeters include flush mount and angled surface mount housings:

  Flush Mount Angled Surface Mount
Mounting Height 0.312" 2.105"
Mounting Depth 0.658" 0.875" (screw depth)
Frame Diameter 1.957" N/A
Cutout Diameter 1.74" N/A
Width N/A 1.968"
Surface Depth N/A 3.114"

Tweeter Crossovers: The included 18" tweeter wires have integrated crossovers. The tweeter ends of the wires have quick-slide terminals that easily connect to the wires soldered to the tweeters. The input end of each wire has three leads, a negative and two positives. The positive leads are labeled Car and Display, with a lower output level from the Car lead (useful because the placement of the woofer in a typical car installation requires the tweeter output be lowered to maintain a balanced sound).

Loading accessories...

Customer Q&A

4 questions already asked

Q
What are the cutoff frequencies for both the woofer and the tweeters integrated crossovers?
james  Dec 29, 2023
1 answer
A
These specifications are not listed by Focal, James. By clicking on the owner's manual link under the "what's in the box" section on the webpage, there is a diagram listed for woofer-only response on the very last page that could aid in setting up your DSP if you plan to run active and not use the included crossovers. For those exact specs on the crossover details, I would advise reaching out to Focal directly. I hope this helps!
bo  Dec 31, 2023 (Staff)
Q
Can I parallel wiring them ? As my amp got only two channels available.
keith  May 22, 2021
2 answers
A
If you mean mid driver and tweeter on same channel then yes.
ronald  Jun 09, 2021
A
yes! but if you wire them parallel they will be 2 ohm impedence instead of 4. make sure your amp will support that, and that the RMS output at 2 ohms isn't too high. these speakers are rated at 80 watts RMS, realistically can be set up with a 100 watt RMS amp as long as you dont go overkill on the gain knob :)
brandon  Jun 09, 2021
Q
What is the difference between the Focal ISU 690 and the discontinued Focal ISS 690? I see the tweeter looks to be slightly different in size and material but the rest of the specifications look the same. It looks like the only difference is that the ISU 690's are much more expensive. Also wondering what the fitment is like for the ISU 690 tweeters going into my 2016 Jeep rand Cherokee. Thanks!
shane  Dec 29, 2020
1 answer
A
Thanks for your question. For information on comparing two or more models I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences and help you make the best choice for your system and your budget.
kristina  Jan 11, 2021 (Staff)

Loading articles...

Compare the sound