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Infinity Kappa 42.5i
4" 2-way Speakers
Our take on the Infinity Kappa 42.5iby Crutchfield's Todd Cabell
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
- 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
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
- Warranty/registration card
Features and Specs
|Tweeter Design||3/4" Balanced-dome|
|Woofer Surround||Hi-roll rubber|
|Parts Warranty||3 Years|
|Labor Warranty||3 Years|
|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|
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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