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Focal ISU 165

Universal Integration Series 6-1/2" component speaker system

Item # 091ISU165

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

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

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Item # 091ISU165

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About the Focal ISU 165

Upgrade with Focal quality

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 with Focal quality

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 165 6-1/2" component speaker system employs a polyglass woofer cone to give you a warm, natural sound with enhanced strength for accurate playback with no added resonances. An integrated phase plug in the woofer improves sound dispersion for a better audio experience, no matter where you're sitting in the car. 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.

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Product highlights:

  • component speaker system includes two woofers and two tweeters with inline crossovers
  • 6-1/2" 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 70 watts RMS power range (140 watts peak)
  • frequency response: 60-21,000 Hz
  • sensitivity: 93 dB
  • woofer top-mount depth: 1-15/16"
  • grilles not included
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # FOCAL ISU165

What's in the box:

  • Two woofers
  • Two inverted dome tweeters (each with 5" length of speaker wire attached)
  • 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

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Focal ISU 165

Crutchfield customer from Gastonia, NC on 3/1/2019

2014 Hyundai Sonata SE

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Replaced the factory speakers in my 2014 Hyundai Sonata with these speakers coupled with a Kenwood Excelon 5 channel by 50W amp and JL Audio 10" mini sub. I had them professionally installed and could not be happier with the sound quality.

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2 of 2 found this helpful

Focal ISU 165

Crutchfield customer from Statham, GA on 2/17/2019

2018 Ford F-250 Lariat

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Great speakers! Installed these in the rear doors of my 2018 F250. By far!! A better speaker!

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0 of 0 found this helpful

Focal ISU 165

Crutchfield customer from Madisonville, TN on 12/7/2018

2018 Ford F-150 XLT

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Vast improvement over stock speakers. Very satisfied.

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0 of 0 found this helpful

Focal=Suspect Qualiy

Richard from Garden City, NY on 5/13/2018

2018 Lexus NX300

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Weak sound. Crossover came apart. Had to solder it back together. If I were not out of the 60 day window, I would exchange. Had the two way Focal's in the front. Had to send them back. Tweeter broken after six weeks.

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3 of 6 found this helpful

Focal ISU 165

Crutchfield customer from Bonney Lake, WA on 4/30/2018

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Very disappointed in these speakers. I swapped out the stock door speakers and tweeter from my 2005 Mercedes SLK 350 and was happy to see the apparent cheap speakers i was taking out. Ive heard many great things about Focal speakers and after spending a day fabricating new speaker housing for the doors and then installing them, they actually sound worse than the stock ones I took out

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Crutchfield response on 5/2/2018
We're sorry you're disappointed with your speakers. Whenever you encounter a problem with anything you purchase from Crutchfield, please contact our Tech Support team. They can help you solve the problem or set up a return within 60 days of purchase. Lifetime tech support comes with every Crutchfield purchase.

9 of 13 found this helpful

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More details on the Focal ISU 165

Pat M.

Features & specs

General
Speaker Size 6 1/2
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
Frequency Response 60 - 21k Hz
Minimum RMS Wattage ---
Maximum RMS Wattage 70
Peak Power Handling (Watts) 140
Top-mount Depth (Inches) 1 15/16
Bottom-mount Depth (Inches) 2 1/16
Cutout Diameter or Length (inches) 5 5/8

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.

Phase Plug: The bullet-shaped phase plug in the center of the woofer ensures a smooth, flat off-axis frequency response by preventing the high frequency sound waves emanating from one side of the cone from interfering with sound waves from the other side of the cone.

Size Classification Note: Crutchfield has traditionally referred to this size woofer as a 6-3/4", while some manufacturers, including Focal, call it a 6-1/2". Please enter your vehicle information to confirm fit.

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).

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Customer Q&A

1 question already asked

Q
Why will these speakers not fit a 2017 Nissan 370Z?
[ Randy  May 20, 2018 ]
1 answer
A
You can check to see if this will fit your vehicle by using our Outfit My Car tool: http://www.crutchfield.com/car/carselector.aspx For additional details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle.
[ Krissy  May 25, 2018 ]  Staff

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