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Kenwood KFC-1666S

6-1/2" 2-way car speakers

15 Reviews | 2 questions - 3 answers

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Our take on the Kenwood KFC-1666S

There comes a day when you just can't bear to drive another mile, listening to muddy-sounding speakers. When you finally reach the breaking point, Kenwood's Sport Series speakers are your go-to solution without breaking the bank.

Dependable sound

There comes a day when you just can't bear to drive another mile, listening to muddy-sounding speakers. When you finally reach the breaking point, Kenwood's Sport Series speakers are your go-to solution without breaking the bank.

Solid lows and clear highs

The KFC-1666S 6-1/2" 2-way speakers feature polypropylene cones that will enrich your music with solid midbass oomph and dynamic midrange, while the 1" balanced-dome tweeters will bring new life to the high range. Kenwood also includes sharp-looking grilles in case you're doing a custom installation in your vehicle. Best of all, you can safely power these with your car stereo and still enjoy your music the way it was meant to be heard, with clarity and emotion.

Product Highlights:

  • 6-1/2" 2-way speakers (pair)
  • polypropylene woofer with treated cloth surround
  • 1" PEI balanced dome tweeter
  • grilles included
  • handles up to 30 watts RMS (300 watts peak power)
  • impedance: 4 ohms
  • frequency response: 40-22,000 Hz
  • sensitivity: 90 dB
  • top-mount depth: 1-11/16"
  • warranty: 1 year
  • Our 60-day money-back guarantee

What's in the Box:

  • Two 2-way speakers
  • 2 Grilles
  • Two 12" Lengths of speaker wire (each has female quick-slides on one end and bare wire on the other)
  • Eight 1" Screws
  • 8 Speed clips
  • Warranty information
  • Specifications and template on the box

Very good speaker for the money. These speakers are better than the OEM speakers that were replaced.

Anonymous, Coatesville, PA


Kenwood KFC-1666S Reviews

Average Customer Review(s):

(15 Reviews)

Kenwood KFC-1666S

Anonymous from Coatesville, PA on 3/17/2018

2005 Honda CRV LX
Crutchfield Customer Review (What's this?)

Very good speaker for the money. These speakers are better than the OEM speakers that were replaced.



Kenwood KFC-1666S

Anonymous from Wiggins, MS on 3/16/2018

Crutchfield Customer Review (What's this?)

So far these speakers are doing great! I accidentally got the wrong size but Crutchfield was awesome about doing a swap for the right size. ????????




Tom from Midlothian, VA on 3/15/2018

2007 Jeep Liberty

I recently purchased Kenwood speakers a set of four. They're not high and what they do the job, sales associate help me out and I appreciate everything he did. Speaker sound fantastic Compared to what I had in my jeep.

Pros: I would recommend the speakers to anyone else on the budget like I am the sound quality is great.

Cons: Non

Nice cheap stock replacement

Josh from Calhoun, KY on 3/11/2018

2001 GMC Sierra 1500
Crutchfield Customer Review (What's this?)

You can't beat them for the price. Very nice mid to high sound. May have a little more bass tot them than stock but not much. I would recommend them to anyone that's wanting to replace old wore out stock speakers.

Pros: Cheap with good sound.


Kenwood door speakers

Derek from Spokane, WA on 3/11/2018

2000 Chevrolet Tahoe
Crutchfield Customer Review (What's this?)

Speakers were a good price and a way better experience than another major online site could do. Crutchfield provided all the addition installation pieces free of charge and they always back their products. For the price point, the speakers sound great. Installation was easy.

Pros: Shipping, quality, installation assistance, price

Cons: Some minor modifications to the bracket, as instructed per manual for the install.

Kenwood KFC-1666S

Michael from New Orleans, LA on 3/10/2018

2007 Nissan Altima
Crutchfield Customer Review (What's this?)

Awesome speakers.



Awesome sound

Eddie from Arlington, TX on 3/7/2018

2017 Mitsubishi Lancer
Crutchfield Customer Review (What's this?)

Very good quality sound for the speakers. I loved the sound even though I needed more bass

Pros: Easy installation and great sound for small speakers

Cons: I needed more bass

Nice unit, complex setup.

Al from Fort Collins, CO on 3/7/2018

1983 Nissan 280ZX
Crutchfield Customer Review (What's this?)

Nice radio; connects easily with Android phone, and allows music playback via that Bluetooth connection. Switches easily between sources, and the characters on the display are large enough to be read easily. Documentation that comes with it only includes install/connection info - no owner's manual. The actual manual is only available online and the English portion is 61 pages long. There are menus under menus, and setup is NOT simple - it takes time to work through. Plan on printout the manual and spending at least a half-hour just working through initial setup. I have some distortion in the reproduction and am working through menus to see if I can eliminate it. I know Crutchfield's tech support will help with this if needed.

Pros: Super set of features, compatibility with Android. Large characters on display are easy to read. Great flexibility available in menus, although it takes time to work through deep menus. Nice fit as single DIN unit.

Cons: Ships without owner's manual which is only available online - 61 pages. Be ready to print a lot of material to make setup possible. May require more time to do initial setup than simpler units.

Kenwood KFC-1666S

Anonymous from Chase, KS on 3/7/2018

2016 Chevrolet Cruze
Crutchfield Customer Review (What's this?)

Nice midrange speaker



Good sound

Camilo A from Ann Arbor, MI on 3/6/2018

2004 Dodge Neon
Crutchfield Customer Review (What's this?)

The OEM speakers that I replaced with this set were of such bad quality. These speakers made a great difference paired to the BT head unit that I got from Crutchfield.

Pros: Many mounting hole patterns to match the car openings

Cons: Smallish magnet

Great speaker; easy installation

Neal from Dunn, NC on 3/6/2018

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

Speakers sound great and great price. Installation on door panel removal was accurate. Speakers screwed into existing holes and wiring leads clipped in for simple installation.

Pros: Accurate installation info and wiring leads were plugged and clipped problems.


It's alright

Alex from Morganton, NC on 3/4/2018

2007 Honda Civic LX

Not as good as the factory speakers but I needed new ones since the factory ones no longer worked.



Kenwood KFC-1666S

Larry from Boyceville, Wi on 3/3/2018

2006 GMC Sierra 1500
Crutchfield Customer Review (What's this?)

2006 GMC 1500 crew cab, replaced all four speakers because problems with all four originals, easy installation with great instructions and the harness that was included made for easy hookup. Highly recommend Crutchfield. Shipped promptly and they work great.

Pros: Easy installation and great sound after installation.


Kenwood KFC-1666S

Jeremy from Jacksonville, FL on 3/1/2018

2005 Honda Accord EX
Crutchfield Customer Review (What's this?)

Great fast shipping and all the extras included and I will be a customer for life! Thank you Crutchfield!

Pros: Great company and very helpful

Cons: No cons

Volume is too low

Ben from Fremont, CA on 2/17/2018

2011 Nissan Rogue

Volume is too low.

Pros: Sound quality is better than factory speaker.

Cons: Volume is WAY TOO LOW. Ended up returning it and replaced with JVC CS-DR620. Glad that Crutchfield has an excellent return policy.


Hands-on research

Features and Specs

Speaker Size 6 1/2
Design 2-way
Tweeter Design 1" Balanced Dome
Impedance (Ohms) 4
Tweeter Composition PEI
Woofer Composition Polypropylene
Woofer Surround Treated cloth
Parts Warranty 1 Year
Labor Warranty 1 Year
Sensitivity (1W at 1 meter) 90
Sensitivity at 2.83 volts N/A
Frequency Response 40 - 22k Hz
Minimum RMS Wattage ---
Maximum RMS Wattage 30
Peak Power Handling (Watts) 300
Top-mount Depth (Inches) 1 3/4
Bottom-mount Depth (Inches) N/A
Cutout Diameter or Length (inches) 4 15/16

Product Research


Tweeters: Each speaker has a 1" PEI balanced dome tweeter. A semi-dome tweeter has a dome placed inside a cone. Balanced dome tweeters are semi-dome tweeters with equal reproduction area given the cone and dome portions of the tweeter. PEI (Poly-Ether-Imide) is a polymer film that produces a wide soundstage for superior imaging.

Mounting: The speaker basket has multiple mounting holes and is designed to fit a standard 3-hole 6-1/2" application, Ford's 4-hole 6-1/2" application, and a standard 4-hole 6-3/4" application. (When mounting in a 6-3/4" application, use a speaker baffle to seal the inner ring of screw holes.)

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.

Q & A

Customer Q&A

2 questions already asked

It's two speakers--left and right. [ Don  Mar 12, 2018 ]
You will receive 2 speakers..... [ JOSE  Mar 11, 2018 ]
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. [ Krissy  Feb 14, 2018 ]  Staff