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Infinity Kappa 63.7i

6-1/2" 3-way car speakers
For 6-1/2" and 6-3/4" openings

Item # 108637I

Infinity Kappa speakers incorporate the latest technology to provide you with outstanding sound reproduction.

Find what Fits your car

Infinity Kappa speakers incorporate the latest technology to provide you with outstanding sound reproduction.

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Contact our Virginia-based experts.
Discontinued item

Item # 108637I

About the Infinity Kappa 63.7i

Infinity Kappa speakers incorporate the latest technology to provide you with outstanding sound reproduction. And, thanks to Infinity's innovative low-impedance design, they're built for high efficiency as well.

Infinity Kappa speakers incorporate the latest technology to provide you with outstanding sound reproduction. And, thanks to Infinity's innovative low-impedance design, they're built for high efficiency as well.

The Kappa 63.7i 6-1/2" speaker features a super-stiff woofer cone to minimize flexing that can cause distortion. The Plus One cone offers a larger surface area than other 6-1/2" speakers, for improved bass output and efficiency. The woofer's powerful, compact neodymium magnets weigh much less than traditional magnets — a nice feature when you're trying to save weight in your high-performance vehicle.

Infinity incorporates an Emit ribbon tweeter for brilliant highs, and adds an M.M.D. midrange to reproduce the vocals in your music just the way they were recorded, with minimal coloration or distortion.

The computer-optimized outboard crossover employs audiophile-grade components to separate highs and lows so that the woofer and tweeters work together perfectly. A tweeter level control allows you to tailor the tweeters' response for perfect balance.

Important Note: These Infinity speakers use a low impedance design to pull more power safely from your car stereo or amplifier. This design is compatible with all factory and aftermarket stereos.


Priced per pair
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Product highlights:

  • 3-way car speakers for 6-1/2" and 6-3/4" locations (pair)
  • 2-ohm impedance for extra power (compatible with all factory or aftermarket car stereos)
  • Plus One woven-glass-fiber woofer cone with rubber surround
  • EMIT tweeter and M.M.D. midrange
  • computer-optimized outboard crossovers with tweeter level control
  • power range: 2-75 watts RMS (225 watts peak power)
  • frequency response: 45-25,000 Hz
  • sensitivity: 95 dB
  • Intermount III mounting system for fit in 6-3/4" openings
  • top-mount depth: 2"
  • warranty: 3 years
  • Our 60-day money-back guarantee
  • MFR # KAPPA63.7I

What's in the box:

  • Two 3-way speakers
  • 2 Grilles
  • 2 Grille rings
  • 2 In-line crossovers (each crossover has 11" input leads and 18" output leads)
  • 2 Metal 6-1/2" adapter rings
  • 2 Plastic GM/Chrysler adapter brackets
  • Eight 1" self-tapping screws
  • Eight 1/2" self-tapping screws
  • 8 Machine screws
  • 8 Speed clips
  • Instructions
  • Warranty card

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More details on the Infinity Kappa 63.7i

Pat M.

Features & specs

General
Speaker Size
Design 3-way
Tweeter Design Emit
Impedance (Ohms) 2
Tweeter Composition Metallic
Woofer Composition Woven-glass-fiber
Woofer Surround Rubber
Parts Warranty 3 Years
Labor Warranty 3 Years
Specifications
Sensitivity (1W at 1 meter) N/A
Sensitivity at 2.83 volts 95
Frequency Response 45 - 25k Hz
Minimum RMS Wattage 2
Maximum RMS Wattage 75
Peak Power Handling (Watts) 225
Top-mount Depth (Inches) 2
Bottom-mount Depth (Inches) N/A
Cutout Diameter or Length (inches) 5

Product Research

Features

Plus One Woven-Glass-Fiber Woofer Cones: The Plus One speakers use cones approximately 30% larger than other speakers of the same size. This is accomplished by using a new basket design and hi-roll surround. The Plus One design offers greater bass output and a significant increase in efficiency. The woven-glass-fiber material is very light and extremely stiff, minimizing cone flex. This results in very low distortion and improved clarity.

Motor Structure: The new Kappas use a Neodymium motor structure with an integrated heat sink. This design provides a massive amount of energy while minimizing mounting depth and magnet diameter. The integrated heat sink cools the motor structure efficiently, thus increasing power handling while reducing distortion.

Emit Tweeter and MMD Dome Midrange: Each speaker has an Emit tweeter and an MMD (Metal Matrix Diaphragm) dome midrange. The benefit is increased power handling and reduced distortion at high output. This technology also allows for better integration with the woofer. The tweeter has an adjustable output level, +0 dB (flat) and +3 dB.

SLI High-Output Design: This high output 2 ohm design extracts every watt from today's high powered receivers and amplifiers, increasing overall system output and efficiency (relative to 4 ohm speakers).

Crossovers: Kappa speakers include computer-optimized, voice-matched crossovers, using audiophile quality air core inductors and polypropylene capacitors.

Crossover Connections: Each crossover has a 11" input lead terminated with bare wire and two 18" output leads, one for the woofer and one for the tweeters, terminated with female quick-slides. The female quick-slides connect to the male quick-slides on the speaker. The positive terminal on the woofer input is 0.248" and the negative is 0.191". The positive terminal on the tweeter input is 0.205" and the negative is 0.109".

Crossover Dimensions: L=4.265", W=2.073", H=1.206"

Intermount III: Infinity's Intermount III mounting system allows the 63.7i speakers to fit a variety of 6-1/2" and 6-3/4" applications. Two adapter rings are included for each speaker.

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