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Infinity

Infinity KAPPA603CF 6-1/2" (165mm) Two-Way Component Speaker System

  • Based on 22 reviews
Condition: New
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$326.00 Why this price?
Holiday Deal · 53% off was $699.00

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This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2026

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Availability: In Stock.
Fulfilled by Audio Watt Store
Arrives Wednesday, Dec 31
Order within 6 hours and 9 minutes
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Features

  • Kappa edge-driven silk dome tweeters equipped with oversized voice coils deliver silky smooth highs with impressive thermal power handling and 40kHz high resolution.
  • Infinitys glass fiber woofer cones are lighter and stiffer with more cone-area than the competition, delivering increased low-frequency output and higher efficiency. Hearing is believing.
  • The push-button on the angled tweeter allows tweeter output level control of 0dB or -3dB to optimize system linearity based on installation location.
  • For 5-1/4", 6-1/2" and 6" x 8" coaxial models, the tweeters are angled and can be rotated 270 after installation on most models. This gives you imaging options and the ability to elevate the soundstage on low mounted speakers.
  • Kappa 2-way component system crossovers are compact and equipped with 2-way and 3-way selections to accommodate a 2" or 3" midrange upgrade. The optional 2" or 3" midrange includes a bandpass crossover to upgrade a two-way system into a three-way system with perfect tonal balance.

Description

Kappa Car Speakers. Make Your Drive Come Alive: Infinity Kappa Series speakers, available in all standard sizes, are designed to bring a new standard of excellence in car audio to virtually any vehicle. Kappa’s Plus One™ fiberglass woofers deliver high-output, deep and robust bass. The high- resolution 3/4" edge-driven textile dome tweeters deliver soaring highs up to 40kHz. 2" and 3" midranges are available to upgrade two-way component systems into three-way. The compact 3" midrange speakers also offer a perfect plug- and-play solution with low frequency response to 300Hz, and high sensitivity.

Brand: Infinity


Speaker Maximum Output Power: 220 Watts


Connectivity Technology: Coaxial


Audio Output Mode: Stereo


Mounting Type: Flush Mount


Material: Glass Fiber, Silk


Model Name: KAPPA603CF


Speaker Type: Component


Special Feature: Hi Res Audio


Recommended Uses For Product: For Music Players


Compatible Devices: car


Unit Count: 1.0 Count


Surround Sound Channel Configuration: 2.0


Color: Black


Included Components: KAPPA603CF


Product Dimensions: 14"D x 3"W x 7"H


Is Waterproof: FALSE


Warranty Type: Limited


Number of Items: 1


Control Method: Voice


Wireless Communication Technology: Coaxial


Speaker Size: 6.5 Inches


Power Source: Corded Electric


Woofer Diameter: 6.5 Inches


Audio Driver Type: Dynamic Driver


Audio Driver Size: 6.5 Inches


Subwoofer Connectivity Technology: Wired


UPC: 050667376949


Manufacturer: Infinity


Shape: Rectangular Prism


Set Name: Kappa Series


Item Weight: 7.39 pounds


Item model number: KAPPA603CF


Is Discontinued By Manufacturer: No


Date First Available: April 27, 2021


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Dec 31

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
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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Good sound quality
I used these to upgrade the speakers in my jeep. Overall they are much better than the factory “premium” speakers. They have an overwhelming amount of base and very high treble but need to be adjusted up more for mid ranges. It make take a while to get a good EQ but they are worth the price and not that hard to install. ... show more
Reviewed in the United States on February 17, 2025 by Prime perspective
    • These speakers are legit.
Kappa's are always good. They really sing with 100 watts. Clean and loud. 5 stars for infinity and 5 stars for the seller's sale price being better than crutchfield and my local shop.
Reviewed in the United States on January 7, 2025 by Rusty Shackleford
    • Very Satisfied
Awesome Sound from a stock stereo even. Would sound even better with an amp to push these. They can certainly handle it. Which is why I bought them. I intend to install an amp. They are a little pricey especially if you only intend to use with a stock radio. These want to be pushed. Very clear sound and clean bass. Tweeters are also clean and clear. Very satisfied. ... show more
Reviewed in the United States on December 6, 2025 by Fred
    • Single Cab Chevy
These KAPPA 603s are worth the price tag! WOW are the tweeters loud! Sometimes too loud if I am being honest. I have these paired up with a Pioneer GM-DX874 and it brings these things alive. I've had them for almost 2 weeks and they've broken in beautifully. I had them without a sub for about a week and they can handle the lows pretty well. However, I have my HPF set to about 120hz -12db with my subs LPF set to 80hz and these KAPPAs play really well. ... show more
Reviewed in the United States on September 6, 2024 by Amazon Customer
    • Great speakers
It's been only 2 days since the install, but having tweeters mounted at/near ear level is great and better than the OE stock. I don't know/think these Kappas are as good as my Morel 602 Ultra MKII (amplified), but the SQ is really good just with the head unit. Definitely would recommend on a budget or wanting to upgrade beyond OE. ... show more
Reviewed in the United States on August 2, 2022 by Betty & Peter
    • Side by side, regarding material, build and sound. They are not worth the money.
After installing this component system, one tweeter did not work right out of the box. As far as the door speakers are concerned, the sound quality and crossover ability are no better than a no-name Chinese white label brand for $45.
Reviewed in the United States on January 7, 2023 by T
    • Nice components but...it will not sound good out of the box.
The problem is the tweeter being excellant overpowers the bass driver. The crossover supplied does not balance the level. The bass driver DOES NOT balance with the tweeter in any way. The tweeter is harsh at low frequencies and the bass unit has bad resonances at midrange frequencies, therefore to make this sound good you HAVE to have a midrange driver and you HAVE to have a way to balance the levels between the drivers. That being said, IF you use a dedicated amp and electronic crossover for each component it will sound excellant. ... show more
Reviewed in the United States on September 15, 2023 by Amazon Customer

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