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Infinity Kappa 42.5i

4" 2-way Speakers

Item # 108425I

Infinity has blended a bundle of audio innovations into a smooth-sounding 4" package!

Find what Fits your car

Infinity has blended a bundle of audio innovations into a smooth-sounding 4" package!

Lee
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Contact our Virginia-based experts.
Discontinued item

Item # 108425I

Lee
Need help?
Contact our Virginia-based experts.

About the Infinity Kappa 42.5i

Infinity has blended a bundle of audio innovations into a smooth-sounding 4" package! The Kappa 42.5i features Ceramic Metal Matrix Diaphragm (C.M.M.D.) cones, which are constructed by sandwiching aluminum between layers of ceramic to form a lightweight, durable driver that is extremely musical.

Infinity has blended a bundle of audio innovations into a smooth-sounding 4" package! The Kappa 42.5i features Ceramic Metal Matrix Diaphragm (C.M.M.D.) cones, which are constructed by sandwiching aluminum between layers of ceramic to form a lightweight, durable driver that is extremely musical.

The oversized Plus One C.M.M.D. woofer cone delivers accurate low-frequency performance with minimal distortion. A cast-polymer basket and hi-roll rubber surround help to eliminate unwanted resonances. The C.M.M.D. balanced dome tweeter reproduces high notes in rich, lifelike detail.

An outboard 2-way crossover network (computer-optimized for the 42.5i) routes signals to the appropriate drivers — you'll enjoy component system sound quality from these easy-to-install coaxials.

Priced per pair

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Product Highlights:

  • Ceramic Metal Matrix Diaphragm (C.M.M.D.) woofer cone
  • 3/4" C.M.M.D. tweeter
  • hi-roll rubber surround
  • 2-way crossover (18 db/octave, 3,500 Hz high- and low-pass)
  • frequency response 75-21,000 Hz
  • recommended power range 2-50 watts RMS
  • peak power handling 150 watts
  • sensitivity 90 dB
  • depth 1-13/16"
  • 3-year warranty
  • MFR # KAPPA42.5I

What's in the box:

  • Two 2-way speakers
  • 2 Grilles
  • 2 Grille rings
  • 2 In-line crossovers
  • 8 Self-tapping screws
  • 8 Speed clips
  • Instructions
  • Warranty/registration card

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More details on the Infinity Kappa 42.5i

Pat M.

Features & specs

General
Speaker Size
Design 2-way
Tweeter Design 3/4" Balanced-dome
Impedance (Ohms) 4
Tweeter Composition C.M.M.D.
Woofer Composition C.M.M.D.
Woofer Surround Hi-roll rubber
Parts Warranty 3 Years
Labor Warranty 3 Years
Specifications
Sensitivity (1W at 1 meter) N/A
Sensitivity at 2.83 volts 90
Frequency Response 75 - 21k Hz
Minimum RMS Wattage 2
Maximum RMS Wattage 50
Peak Power Handling (Watts) 150
Top-mount Depth (Inches) 1 13/16
Bottom-mount Depth (Inches) 1 15/16
Cutout Diameter or Length (inches) 3 11/16
The Infinity Kappa 42.5i replaces these items:

Product Research

Features

Ceramic Metal Matrix Diaphragm (C.M.M.D.): Infinity's C.M.M.D. technology delivers accurate performance with dramatically reduced distortion for incredibly lifelike sound. Additionally, the C.M.M.D. drivers can withstand extreme temperatures, moisture, humidity and sunlight.

C.M.M.D. Plus One Woofer Cones: These 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. In addition, the C.M.M.D. cones virtually eliminate coloration due to cone flexing, resulting in less distortion and superior accuracy.

Surrounds: The hi-roll rubber surrounds allow the woofers a greater range of movement, resulting in longer X-max and more bass output.

Tweeters: Each speaker has a 3/4" C.M.M.D. balanced-dome tweeter, which offers superior stiffness and damping compared to traditional metal domes.

2-Way Crossovers: These speakers include computer-optimized, voice-matched crossovers. Each crossover features an 18dB/octave, 3.5kHz high-pass network for the tweeter and an 18dB/octave, 3.5kHz low-pass network for the woofer.

Crossover Connections: Each crossover has an 11" input lead terminated with bare wire and two 18" output leads, one for the woofer and one for the tweeter, terminated with female quick-slides. The positive woofer lead has a 0.205" female quick-slide and the negative woofer lead has a 0.110" female quick-slide. The positive tweeter lead has a 0.250" female quick-slide and the negative tweeter lead has a 0.187" female quick-slide. These quick-slides connect directly to the woofer and tweeter terminals on each speaker.

Crossover Dimensions: L=3.458", W=1.734", H=1.087"

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