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Infinity Kappa 63.9i

6-1/2" / 6-3/4" 3-way Kappa Series Coaxial Car Speakers

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6.5" Kappa Series Car Speakers • 225W Max • 75W RMS • Woven glass fiber cone woofer • Rubber surround • 1" Edge-driven MMD (Metal Matrix Diaphragm) dome tweeter • UHF super tweeter • Computer optimized voice-matched passive crossovers

Learn more about the 639i

We apologize

This item has been discontinued

Product Highlights


6.5" Kappa Series Car Speakers • 225W Max • 75W RMS • Woven glass fiber cone woofer • Rubber surround • 1" Edge-driven MMD (Metal Matrix Diaphragm) dome tweeter • UHF super tweeter • Computer optimized voice-matched passive crossovers

Description


Infinity brand icon

Authorized dealer

Kappa: The Essence of Infinity

This Infinity Kappa 682.9cf is the essence and trademark of Infinity car audio. With all the high-end engineering and technology that goes into each Kappa speaker, you will sure that you are receiving only the highest quality components. Made with a woven glass fiber woofer cone, which contributes to low cone flex, low distortion, and enhanced acoustic clarity. Due to the increased power handling of the Kappa series, the Kappa 682.9cf feature edge-driven MMD dome tweeters that allow for a seamless sonic integration between the tweeter and the mid-woofer. Using the latest in loudspeaker engineering, each of the crossovers has computer optimized voice-matched outboard passive crossovers for flawless performance.

Unipivot: Staging Made Easy

The Infinity 682.9cf features a patented Unipivot tweeter design that ensures proper imaging when the speakers are installed. With the tweeter capable of being moved, it is positional and rotational even after the final screw secures the speaker in the door. Since most speakers are installed low in the door, the Unipivot design brings the soundstage up to the listener for more accurate and enjoyable experience. Each of the Kappa coaxial speakers, such as the Infinity Kappa 682.9cf feature adjustable tweeter level control. This switch will adjust the tweeters output by 3 dB. That simple tuning can make all the difference in your system and it ensures that your Kappa speakers will deliver exactly the sound that you are looking for.

True Four Ohm Technology

The engineers at Infinity have developed a speaker that works for all applications. The True Four Ohm Technology used in these speakers make it perfect for running directly of a headunit or with an aftermarket headunit and amplifier. All of the speakers in the Infinity Reference line feature a 2 ohm voice coil. However, when you factor in the small OEM speaker wire of most vehicles and the heating in the voice coil during use, the impedance actually seen by the amplifier will increase. Infinity has adjusted the speaker to be safely connected to any headunit.

General Features:

  • 6-1/2" Kappa Series Car Speakers
  • Power Handling:
    • Peak: 450 watts per pair / 225 watts each
    • RMS: 150 watts per pair / 75 watts each
  • Woven glass fiber cone woofer
  • Rubber surround
  • 1" Edge-driven MMD (Metal Matrix Diaphragm) dome tweeter
  • UHF super tweeter allows for frequency response as high as 30000 Hz
  • Computer optimized voice-matched passive crossovers with audiophile-grade air core inductors and polypropylene capacitors
  • Adjustable tweeter level (-3 dB, 0, +3 dB)
  • 2 ohms impedance
  • Top-mount depth: 2-5/16"
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty

Priced Per Pair

Product history:

Infinity 63.9i thumbnail
(newest, current model)
Lanzar VIBE431 thumbnail
(previous model, replaced by Infinity Kappa 63.9i)

Specifications & Details


Speaker Specifications
Speaker Size
6-1/2" (also mounts in 6-3/4" w/ included brackets)
Design
3-way Coaxial
Tweeter Design
Dome
Tweeter Composition
Metal Matrix Diaphragm
Woofer Composition
Woven Glass Fiber
Woofer Surround
Rubber
Peak Power Handling
225 watts
RMS Power Handling
75 watts
Sensitivity
95 dB
Frequency Response
45 - 30000 Hz
Impedance (Per Voice Coil)
2 ohms
Top-Mount Depth (Mounting Depth)
2-5/16"
Cutout Dimensions
4-5/16" x 4-5/16" 
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

63.9i

Weight:

9.00lbs

Internal SKU:

639i

Internal Product ID:

13447

Product and How-to Videos


  • How To Test Speaker Polarity | Tips & Demo | Car Audio 101
  • Replace your Car Speakers and Upgrade to Better Sound | Sonic Electronix
  • Harman International: The Pursuit of Great Sound

Customer Ratings & Reviews



5 star
78%
4 star
22%
3 star
0%
2 star
0%
1 star
0%



Durability
4.8
Value
4.8
Features
4.9
Design
4.8
Usability
4.8

Customer Reviews

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kappa 63.9i

Easy to install and comes with hardware, grills mounting brackets for different sized openings and instructions. Kappas sound great at a great price.

By kj on February 14, 2013

35

found this helpful.

6 month review...

Replaced factory speakers with these, driven by a Pioneer GM-D9500F. I've had several audiophiles and musicians in my car and they want me to do the same setup for them. Truly amazing sound.

By Rael on March 12, 2012

34

found this helpful.

Good sound

Good highs. Looks great. More bass than you would expect with a shallow design. Shallow design makes it easier to mount and it also comes with nice mounting options.

By Joey on April 6, 2009

34

found this helpful.

Buy

Great sound quality, great price. Only problem was that the magnet was too big for my doors. I drive a 96 Mercury Tracer and in the front doors there is a brace that partially impedes on the speaker slot, had to cut some plastic and metal and drill a few new holes, but all around worth it!

By Mike on December 20, 2008

33

found this helpful.

Fantastic

I bought 2 pairs of these speakers too install in my 2000 Jetta as my first upgraded sound system. It was super easy and fast considering i did it myself. They sound FANTASTIC, better than my friends 50,000$ Audi. Unfortunately the front door speaker blew the first day. But it was my fault because I had the music way too loud. But i just called Harman and they replaced it quickly and without question. HIGHLY recommended as upgrade.

However if you want to get the best out of these speakers you will need an amp. I just installed an infinity 4 channel amp and the difference is astronomical. Buy these.

By Andrew on January 23, 2013

33

found this helpful.

You know its not factory...

Very good speakers for the price, I dare say best, but what do you expect from Infinity/Harmon-Kardon. The crossover gets kinda difficult to manage, but at the same time makes things easier. I think I ended up either ziptieing it or sticking it down with dynamat so it wouldn't bang arround. A flaw with my system installation means sometimes when I start my car the radio turns on at full volume, and will make you jump out of your skin (think James Brown). Using the Infinty Kappa Five with the amps crossover at 320 high pass. I think if I can pad the door panels or fur them out from the speakers, then I can set it to an 80 High pass and really make my molecules move! In the doors of my 2002 Monte Carlo SS. I belive the max excursion may be too much for the mounting space and that could be the cause of the bass distortion (either that or the panel needs reinforcement). There was also a mounting spot for a tweeter in the factory door speaker mount, kinda wish I peeled the panel off before making my purchase. I'd rather have components than #-way speakers. I went for the three ways rather than the 2ways and I think it was worth it. High value for dollar.

By -Benjamin on July 22, 2012

32

found this helpful.

NICE

They are very clear. Highs are clean. With a amp they sound extremly clean.

By juan on September 29, 2011

32

found this helpful.

Bliss!!

This is a wonderful speaker. I currently have a pair mounted in the doors of my 08 Tundra powered by a Soundstream Tarantula 4-channel amp. The highs are very clean and detailed. The bass is good, however I would recommend a sub for lower frequencies. Infinity did a good job with this one. I highly recommend them!!!!

By BigNasty on September 16, 2009

32

found this helpful.

sounds great

I have had better speakers but these do sound good. They are clear and loud. I recommend these for the price

By patrick on March 22, 2009

33

found this helpful.

Unbelievable sound!!!

Great deal on a great set of speakers! Unbelievable sound!!!

By Richard on January 30, 2009

32

found this helpful.

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