Infinity Kappa 52.5i
5-1/4" 2-way Speakers
Our take on the Infinity Kappa 52.5i by Crutchfield's Todd Cabell
Infinity makes Kappa Series speakers for the mobile audio connoisseur who appreciates the refined elegance of adjustable tweeters, and yet demands powerful bass output. The 52.5i 5-1/4" Kappas feature angled, Ceramic Metal Matrix Diaphragm tweeters that swivel 355°, giving you precise imaging control.
The Plus One C.M.M.D. woofers incorporate a unique basket structure and a repositioned hi-roll rubber surround into a Plus One cone design (30% larger than most similar-sized speakers) to achieve maximum bass output. Infinity includes two high-quality, voice-matched outboard crossovers that send clean, pure signal to the drivers.
Priced per pair
- Ceramic-Metal Matrix Diaphragm woofer with hi-roll rubber surround Plus One woofer is 30% larger than standard 5-1/4" cones
- 3/4" C.M.M.D. dome tweeter may be turned up to 355° for improved imaging
- 2-way crossover (18 dB per octave, 3500 Hz high-pass for tweeter, 3500 Hz low-pass for woofer)
- frequency response 55-21,000 Hz
- recommended power range 2-55 watts RMS
- peak power handling 165 watts
- sensitivity 90 dB
- top-mount depth 2-1/8"
- warranty: 3 years
- Our 60-day money-back guarantee
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
Worth every penny, the speaker goes above and beyond the normal 5 1/4. Best speaker on the market.
Craig, Omaha, NE
Infinity Kappa 52.5i Reviews
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Features and Specs
|Tweeter Design||3/4" 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||55 - 21k Hz|
|Minimum RMS Wattage||2|
|Maximum RMS Wattage||55|
|Peak Power Handling (Watts)||165|
|Top-mount Depth (Inches)||2 1/8|
|Bottom-mount Depth (Inches)||N/A|
|Cutout Diameter or Length (inches)||4 3/4|
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.
UniPivot C.M.M.D. Dome Tweeters: Each speaker has a 3/4" C.M.M.D. dome tweeter that offers superior stiffness and damping compared to traditional metal domes. The UniPivot tweeter is angled (non-adjustable) and may be turned up to 355 degrees for optimum imaging and in-car frequency response. It is not made to turn 360 degrees. If the tweeter is turned 360 degrees or more, it will be damaged.
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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