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Deal.ai › Kenwood
Kenwood
Kenwood KFC-1666S 600W Max (60W RMS) 6.5" 2-Way Coaxial Car Speaker (2 PAIRS)

Kenwood KFC-1666S 600W Max (60W RMS) 6.5" 2-Way Coaxial Car Speaker (2 PAIRS)

Best price now

$33.50at AmazonChecked 9 h ago

33% under what the other stores charge

Compared across 18 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. As an Amazon Associate, Deal.ai earns from qualifying purchases.

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Price facts

  • Lowest price today: $33.50 at Amazon (checked Nov 13, 2026).
  • Checked at 18 stores.

Our take on the Kenwood KFC-1666S 600W Max (60W RMS) 6.5" 2-Way Coaxial Car Speaker (2 PAIRS)

The Kenwood KFC-1666S is a 6.5-inch two-way coaxial car speaker from Kenwood's Sport Series, sold here as two pairs. Each speaker pairs a polypropylene cone with a 1-inch balanced dome tweeter, handles 60W RMS (600W peak per the listing), and is rated at 4 ohms with 92dB sensitivity, so it plays loud off head unit power. Its shallow 1-11/16-inch top-mount depth helps it drop into factory door and rear-deck openings. It suits drivers replacing blown or tired stock speakers on a budget; rivals at the same level often add silk-dome tweeters or higher RMS ratings, but few are this easy to drive without an amp.

Best forReplacing factory speakers in older carsRunning off a head unit without an ampFilling front and rear doors with two pairsBudget builds that need loud, clear sound
Pros
  • High 92dB sensitivity plays loud on modest power
  • Shallow mounting depth fits many factory locations
  • Polypropylene cone resists moisture in doors
  • Two-way coaxial design needs no separate tweeters
  • Two pairs cover front and rear in one buy
Cons
  • 60W RMS ceiling limits how much amp power it can take
  • Paper-style tweeter can sound bright at high volume
  • Bass is modest without a subwoofer
  • No separate crossover, so mids and highs overlap

Kenwood KFC-1666S 600W Max (60W RMS) 6.5" 2-Way Coaxial Car Speaker (2 PAIRS) prices at every store

  • WalmartNew

    In stock

    $36.00Free shippingChecked 9 h ago
    Visit Walmart
  • SonicElectronix.comNew

    In stock

    $44.99+ $7.00 shippingChecked 9 h ago
    Visit SonicElectronix.com
  • CrutchfieldNew

    In stock

    $44.00+ $9.99 shippingChecked 9 h ago
    Visit Crutchfield
  • absoluteusaNew

    In stockReturn policy

    $109.99Checked 9 h ago
    Visit absoluteusa
  • AbsoluteProMusic.NetNew

    In stockReturn policy

    $109.99Checked 9 h ago
    Visit AbsoluteProMusic.Net
  • CyberoverstockkNew

    In stockReturn policy

    $109.99Checked 9 h ago
    Visit Cyberoverstockk
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $33.50Checked 9 h ago
    Visit Amazon
  • Mickey ShorrNew

    Availability unknown

    $39.95Checked 9 h ago
    Visit Mickey Shorr
  • Qualitymobilevideo.comNew

    Availability unknown

    $39.99Checked 9 h ago
    Visit Qualitymobilevideo.com
  • eBayNew

    Availability unknownSold by crutchfield_electronics

    $44.00Checked 9 h ago
    Visit eBay
  • PC Richard & SonNew

    Availability unknown

    $49.97Checked 9 h ago
    Visit PC Richard & Son
  • Hi-Tech Car AudioNew

    Availability unknown

    $49.99Checked 9 h ago
    Visit Hi-Tech Car Audio
  • Parts ExpressNew

    Availability unknown

    $50.00Checked 9 h ago
    Visit Parts Express
  • Electronics ExpoNew

    Availability unknown

    $59.00Checked 9 h ago
    Visit Electronics Expo
  • Creative AudioPre-owned

    Availability unknown

    $29.21+ $32.40 shippingChecked 9 h ago
    Visit Creative Audio
  • Newegg.comNew

    Availability unknownSold by Temonick shop

    $68.41Checked 9 h ago
    Visit Newegg.com
  • eBayNew

    Availability unknownShips from the UK · duties may apply

    $78.99Checked 9 h ago
    Visit eBay
  • eBayNew

    Availability unknownShips from Italy · duties may apply

    $78.99Checked 9 h ago
    Visit eBay

Store links may earn us a commission.

Kenwood KFC-1666S 600W Max (60W RMS) 6.5" 2-Way Coaxial Car Speaker (2 PAIRS) price history

Lowest price we've seen: $33.50 on Nov 13 at Amazon. Tracked across 14 stores since Nov 13.

What reviewers say

Owners generally call these a solid, affordable upgrade over stock speakers, noting they get loud from a factory head unit. Some find the highs sharp and the low end thin without a sub.

What people mention
  • Sound qualityMixedOwners say they are clearer than stock speakers but the treble can sound sharp.
  • BassCriticisedReviewers note low end is weak without a separate subwoofer.
  • Power handlingMixedThey run well off a head unit, but some want more RMS headroom for amps.
  • FitPraisedThe shallow depth makes them easy to install in factory openings.
  • ValuePraisedBuyers call the two-pair set a good deal for a basic upgrade.

About the Kenwood KFC-1666S 600W Max (60W RMS) 6.5" 2-Way Coaxial Car Speaker (2 PAIRS)

The Kenwood KFC-1666S is a 6.5-inch, 2-way coaxial car speaker from the Sport Series. It is a flush-mount design. This listing is for 2 pairs.

Each speaker has a polypropylene cone with a cloth surround and a ferrite magnet. The 1-inch balanced dome tweeter uses a neodymium magnet. Impedance is 4 ohms.

Quantity
2 pairs
Type
6.5" 2-way coaxial, flush mount, Sport Series
Impedance
4 ohms
Woofer cone
Polypropylene (PP silver)
Surround
Cloth
Woofer magnet
Ferrite
Tweeter
1" balanced dome, neodymium magnet
Tweeter height
5/16 in.
Cutout diameter
4-7/8 in.
Mounting depth
1-11/16 in.
In the box
Per pair: two 2-way speakers, 2 grilles, two 12" lengths of speaker wire (female quick-slides on one end, bare wire on the other), eight 1" self-tapping screws, 8 speed clips, owner's manual, warranty

Questions and answers

Do I need an amplifier for these speakers?
No. At 92dB sensitivity and 4 ohms they play loudly from most head units. An amp adds headroom but is not required.
Will these fit my car's factory speaker openings?
They fit many 6.5-inch factory locations thanks to the shallow 1-11/16-inch top-mount depth. Check your vehicle's speaker size and depth before buying.
How much power can they handle?
Kenwood rates them at 60W RMS, with the listing quoting 600W peak for the pair set. Match amp output to the RMS figure to avoid distortion.
Do they come with grilles or mounting hardware?
The listing covers the speakers themselves. Confirm grilles and adapters with the seller if your install needs them.
Do I need a subwoofer with these?
For full-range sound, yes. The 6.5-inch cones handle mids and highs well but produce limited deep bass.
Where is the Kenwood KFC-1666S 600W Max (60W RMS) 6.5" 2-Way Coaxial Car Speaker (2 PAIRS) cheapest?
At Amazon, for $33.50, 33% under what the other stores charge, as of our latest check.
Where can I buy the Kenwood KFC-1666S 600W Max (60W RMS) 6.5" 2-Way Coaxial Car Speaker (2 PAIRS)?
16 stores we checked sell it, including absoluteusa, AbsoluteProMusic.Net, Cyberoverstockk, Amazon, Creative Audio.

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Stores we've priced the Kenwood KFC-1666S 600W Max (60W RMS) 6.5" 2-Way Coaxial Car Speaker (2 PAIRS) at

  • Crutchfield deals and prices
  • Electronics Expo deals and prices
  • Newegg deals and prices
  • PC Richard deals and prices
  • SonicElectronix.com deals and prices
  • Walmart deals and prices
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