Search  for anything...
Kenwood

Kenwood KFC-1666S Car Stereo Speaker 6-1/2" 2-Way Speakers with Powerful Sound and Easy Installation - Elevate Your Car Audio

  • Based on 1,721 reviews
Condition: New
Checking for the best price...
$34.79 Why this price?
Save $18.16 was $52.95

Buy Now, Pay Later

As low as $8 / mo
  • – 4-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Monday, Oct 19
Order within 15 hours and 16 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Recently Viewed

Features

  • Superior Sound Reproduction - Experience immersive audio with KENWOOD Car Stereo Speaker KFC-1666S, featuring 6-1/2" 2-way speakers, delivering impressive clarity and powerful bass.
  • Enhanced Audio Performance - The polypropylene woofer with treated cloth surround ensures precise and impactful bass response, while the 1" PEI balanced dome tweeter produces crisp and detailed highs
  • Effortless Installation - Grilles are thoughtfully included, making installation a breeze and providing added protection to the speakers, ensuring a seamless upgrade for your car's audio system
  • High Power Handling - These speakers handle up to (300 watts peak power), allowing you to turn up the volume without compromising on sound quality
  • Wide Frequency Range - With a frequency response of 40-22,000 Hz and impedance of 4 ohms, the KFC-1666S covers a broad range of frequencies, delivering a well-balanced audio experience with a sensitivity of 90 dB

Description

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. To improve sound quality To realize clear sound To fit for wider car selection

Brand: Kenwood


Speaker Maximum Output Power: 300 watts


Frequency Response: 22000 hertz


Connectivity Technology: Wired


Audio Output Mode: Stereo, Surround


Audio Output Mode: Stereo, Surround


Mounting Type: Flush Mount


Enclosure Material: Polypropylene, PEI


Speaker Type: Coaxial


Additional Features: car stereo, double din car stereo, pioneer car stereo, car stereo bluetooth, kenwood car stereo, bluetooth car stereo, pioneer double din car stereo, alpine car stereo, android car stereo, touch screen car stereo, single din car stereo, car stereo with backup camera, sony car stereo, indash car stereo touch screen, double din car stereo with navigation, 2 din car stereo, car stereo harness, car stereo wire harness, car stereo wire harness connectors, posi car stereo wire harness connectors


Antenna Location: For Surround Sound Systems


Subwoofer Diameter: 4.96 centimeters


Color: Black


Is Waterproof: FALSE


Warranty Type: Limited


Control Method: Touch


Speaker Size: 6.5 inches


Woofer Diameter: 6.63 inches


Specific Uses For Product: Car Audio Systems


Speaker Maximum Output Power: 300 watts


Input Voltage: 12 volts


Unit Count: 1 Count


Item Dimensions D x W x H: 3.6"D x 7.6"W x 13.5"H


Item Weight: 2.8 pounds


Compatible Devices: MP3 Player, Smartphone, Tablet


Compatible with Vehicle Type: & SUVs, Select Cars, Truck


Power Source: Corded Electric


Brand: Kenwood


Model Number: KFC-1666S


Model Name: KFC1666S


Built-In Media: 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


Warranty Description: 1-Year Manufacturer Warranty


Number of Items: 1


Customer Package Type: FFP


Series Number: 1666


UPC: 019048222879


Global Trade Identification Number: 79


Manufacturer: KENWOOD


Frequency Response: 22000 hertz


Number of Audio Channels: 2


Impedance: 4 ohm


Connectivity Technology: Wired


Wireless Technology: No Wireless Communication Technology


Subwoofer Connectivity Technology: Wired


Connectivity Protocol: Wired (Aux, RCA, Speaker Wire)


Audio Driver Type: Dynamic Driver


Audio Driver Size: 6.5 inches


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Oct 19

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Good High/Mid very little bass (on stock head unit 15-20rms)
Review Image by Jordan
Good highs and mids pretty much no bass but I bought them because I have a subwoofer so I don’t need bass from the door speakers. These are definitely louder than my stock 2018 Camry se door speakers with factory head unit no amp but my stock did have some bass theses pretty much don’t if you have a sub and want new speakers without a amp these are great for louder high/mids go for it if you got a amp get something bigger for 30 dollars great lil speakers I had to buy a adapter for the speakers and wire harness for about 20 ... show more
Reviewed in the United States on June 12, 2026 by Jordan
    • big bang for your dollar
these upgrades for my car are AWESOME!!!! clear sound deep bass for 61/2 i bought a second pair to do the back doors
Reviewed in the United States on September 4, 2026 by Jim
    • Love these speakers
I put these in my 92 Nissan hardbody to replace the speakers that were in there when I bought it from somebody a few years ago they’re sound great and loud. What’s really impressive is it that I’ve got a 1992 hardbody that I bought from in front of somebody’s house for $900 I was delivering Chinese food at the time and I would deliver to this guy every so often and I would just ask him hey if you ever want to sell that truck no no no it’s my son‘s. He doesn’t wanna sell it but one day he’s like yeah my son wants to sell it and it wouldn’t start so I had to go buy a battery and at the time this is right before Covid before prices got crazy on everything and I got this little 1992 Nissan hardbody manual transmission for 900 had to put about 1000 into it to get things working properly, like a new fuel pump, plugs, and wires distributor but she’s a great truck and I love having a secondary vehicle that has no modern BS on it. It’d be really nice if they would make small trucks again especially with these crazy gas prices in 2026. ... show more
Reviewed in the United States on May 23, 2026 by Michael Edward
    • Lacks bass, sharp vocals
Im not sure if it's due to the factory receiver in my car (14 fiesta with My Ford Touch, Premium audio w/o Sony) or the speakers themselves, but I feel like the busted paper speakers I replaced had more bass response.... The mids are outstanding and the vocals are clear at low to mid volume, but when you get much higher than conversation level DB the highs are sharp, like really unpleasantly sharp to where I've turned the treble almost all the way down to curb it. Maybe over time as they break in it'll improve but I was underwhelmed by them. They're priced reasonably and if you're running a decent receiver with EQ controls you might get a different experience, the vocals are very clear as I was lead to expect, just maybe too bright for me/my setup. ... show more
Reviewed in the United States on August 21, 2026 by James
    • Great price work great
Works great and fit in my car love it
Reviewed in the United States on July 28, 2026 by Matt walett
    • Incredible Sound at an Affordable Price – Perfect for Easy Audio Upgra
I recently purchased the KENWOOD KFC-1666S 6-1/2" 2-Way Car Stereo Speakers, and I have to say, they have far exceeded my expectations. The sound quality these speakers provide is nothing short of impressive. They deliver crisp highs and clear mid-range tones, making my daily drives much more enjoyable. The bass, while not as deep as you might get with a dedicated subwoofer, is still solid for a 2-way speaker and adds a nice depth to the music. If you're looking for a well-rounded audio upgrade that really enhances your in-car listening experience, these speakers are an excellent choice. One of the best aspects of these speakers is how easy they are to install. I was able to get them set up in my car without any hassle, and they fit perfectly in the existing speaker mounts. Even if you're not particularly experienced with installing car audio equipment, you shouldn’t have any trouble getting these up and running. What really stands out, though, is the incredible value for the price. These speakers are very affordable, but the sound quality they deliver is far better than you would expect for something in this price range. It’s rare to find such an inexpensive option that still offers such high-quality performance. If you're on a budget but don’t want to compromise on sound, these speakers are a fantastic deal. Overall, I’m really pleased with this purchase and would highly recommend these KENWOOD speakers to anyone looking for a quick and easy way to elevate their car’s audio system without breaking the bank! ... show more
Reviewed in the United States on October 8, 2024 by Travis
    • Lots of mids and highs, but still great replacement speakers
Lots of mids and highs if you're installing these speakers in rear doors. Bass is almost unnoticed, but remember it's a 6 ½ in size speaker. Look great if installing with grill. Easy to connect with required adapter for Nissan vehicles. For less than 40 dollars they're ok. Better than blown original speakers. ... show more
Reviewed in the United States on December 30, 2025 by Alonzo
    • Nice upgrade to factory speakers
2015 Kia Forte LX base audio system. I installed these a few days ago and I am honestly over the moon with the improvement these have made to my vehicle sound! I haven't changed the head unit out yet but these new speakers are so much clearer and louder. Used to have to run it at max volume literally all the time but now right above the midpoint is loud enough. Bass is not a huge improvement but that's to be expected. New more powerful head unit should take care of that and I may do subs eventually...undecided. I just bought one set to do the fronts I will ABSOLUTELY be buying another set in the next few days or so to do the back set. I went with Crutchfield for speaker adapters and I got these installed in about 20 minutes - very straightforward! Will update this with any problems I have. ... show more
Reviewed in the United States on October 29, 2025 by Julius M

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...