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Infinity Kappa 52.11i

5-1/4" 2-way car speakers

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Item# 1085211I offer details

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Infinity

Why replace your car's original speakers?

The speakers that originally came in your car were made from inexpensive materials, designed to create acceptable sound at the lowest possible cost to the manufacturer. If you love music, you deserve better. Name-brand aftermarket speakers deliver fuller, richer sound with considerably more detail and nuance, and they're capable of playing louder and cleaner than factory speakers. Connect new speakers to your factory radio and you'll get the best possible sound from your dealer-equipped system. Pair them up with a new car stereo for a level of enjoyment that can rival a high-fidelity home audio experience.

Our take on the Infinity Kappa 52.11i

by John Pollard

Legendary sound

Infinity's Kappa Series 52.11i 5-1/4" speakers continue in the tradition of this legendary line of speakers, offering rugged construction and impressive sound quality. Once installed, these speakes will bring out every nuance and detail in your favorite music tracks, making time spent in your car seem more like a concert than a commute.

Large soft dome tweeters

If you're looking for natural-sounding high frequencies, Infinity uses edge-driven 1" soft dome tweeters in this system. The "edge-driven" design results in a larger tweeter that handles more power and delivers smooth response way down into midrange frequencies not covered by smaller "W"-shaped domes. You'll hear a more clearly defined soundstage where you can picture the placement of every instrument.

Infinity's UniPivot design allows you to aim each tweeter toward your ears, so you enjoy excellent stereo imaging even if the speakers are mounted way down low in your doors. Each tweeter also features a level control switch so you can boost the brightness to your taste.

Glass fiber woofer with Plus One+ technology

If you like bass, the Kappa glass fiber woofer holds its shape when the power's cranked up, so you still get punchy and defined bass. Glass fiber weighs less than traditional materials, so you don't need a ton of power to drive this woofer. Infinity's Plus One+ woofer technology extends the cone right up to the edge of the basket, giving you more surface area than with most comparable speakers. A bigger cone means more bass to complement the superior high-frequency response.

Great for any system

These 2-ohm speakers are sensitive enough that you can power them with an aftermarket stereo, but you'll get your best results feeding them plenty of power from an outboard amp — up to 55 watts RMS. Grilles are included.

Highlights:

  • 5-1/4" 2-way car speakers
  • Plus One+ glass-fiber woofer cone with hi-roll rubber surround
  • 1" edge-driven, soft dome tweeter
  • 2-ohm impedance
  • power range: 5-55 watts RMS (165 watts peak power)
  • frequency response: 55-25,000 Hz
  • sensitivity: 94 dB
  • top-mount depth: 2-3/16"
  • warranty: 3 years
  • Our 60-day money-back guarantee
Shop all Infinity 5-1/4" Speakers
     

    Hands-on research from the Crutchfield Labs (what are the Labs?)

    Features and Specs

    Features and Specs
    General
    Design
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    2-way
    Tweeter Design
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    1" Dome
    Tweeter Composition
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    Textile
    Woofer Composition
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    Formed glass fiber
    Woofer Surround
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    Rubber
    Parts Warranty
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    3 Years
    Labor Warranty
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    3 Years
    Specifications
    Sensitivity
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    94 dB at 2.83 volts
    Frequency Response
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    55 - 25k Hz
    RMS Power Range (Watts)
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    5-55
    Peak Power Handling (Watts)
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    165
    Impedance (Ohms)
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    2
    Top-mount Depth (Inches)
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    2 3/16
    Bottom-mount Depth (Inches)
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    2 3/8
    Cutout Diameter or Length (inches)
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    4 11/16

    Product Research

    Product Research
    What's in the box?

    Download owner's manual

    • Two 2-way speakers
    • 2 Grilles
    • 2 Grille rings
    • Eight 1-3/8" Self-tapping screws
    • 8 Speed clips
    • 2 Adhesive backed foam gaskets
    • 2 Adhesive backed Infinity logo badges
    • Instructions

    Our Product Research Team

    At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

    Features

    Plus One Woofer Cones: The Plus One speaker cones offer more surface area than other speakers that fit in the same size opening. This is accomplished by using a new basket design and hi-roll surround. The result is greater bass output and a significant increase in efficiency.

    Formed Glass Fiber Woofer Cones: The formed glass fiber cone material is very light and extremely stiff, minimizing flex. This results in very low distortion and improved clarity.

    iCGM frames: The Kappa series speaker baskets are made of composite Injected Carbon Glass Matrix (iCGM). iCGM is lighter and stronger than stamped steel; it retains its shape, even when mounted on uneven surfaces (common in car mounting locations), plus offers exceptional damping of any resonances.

    Edge Driven Dome Tweeters: Each speaker has a 1" Edge-driven textile soft dome tweeter. An edge-driven tweeter has better dispersion characteristics and allows for a lower crossover frequency than typical tweeters of the same size, which improves imaging. The result is improved vocals and musical clarity. The tweeter also has an adjustable output level, +0 dB (flat) and +3 dB.

    UniPivot Tweeter: The tweeter is angled and can be rotated about 315° after installation. This allows you to direct the tweeters toward the listeners, very useful for speakers mounted low in a door.

    High-Output Design: The high output 2-ohm voice coil design compensates for the high in-line resistance of small gauge factory wiring and extracts every watt from factory receivers, increasing overall system output and efficiency (relative to 4 ohm speakers). The speaker's 2.0-ohm impedance combined with the impedance of your speaker wire provides a true 4-ohm load to your connected headunit or amplifier. The speakers also benefit from increased power when you upgrade the wire and add aftermarket amplifiers, designed to power a 2-ohm load.

    Terminals: The input terminals are gold-plated set screws that will accept up to 12 gauge bare wire.

    Power Handling: Although Infinity lists the RMS power handling as 55 watts, they also list the recommended power range as 5-75 watts RMS. We've opted to list the more conservative 55 watt RMS figure on the specifications page.

     

    Product Reviews

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    Reviews for the Infinity Kappa 52.11i

    Average Customer Review:

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    Showing: 1-4 of 4
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    5 out of 5

    Great sound

    Written By Anonymous, Boyertown, Pa on Monday, May 06, 2013
    Installed in a 1994 Dodge Intrepid
    Crutchfield Customer Review (What's this?)
     
    These were the last piece of my total upgrade for my sound system. All I can say is totally worth it! Pack a good punch coming from the side in my doors.
    Pros:
    Terminal connectors are a big plus. They were also packaged very well.
    Cons:
    Dont know how I feel about having plastic connections to attach the speaker to the door but from using the previous generation of kappa's I feel it is an upgrade from having the screw practically into the rubber of the speaker.
    Was this review helpful?    Yes | No
     
    5 out of 5

    Infinity Kappa 52.11i

    Written By 04C240, Alamo on Sunday, March 24, 2013
    Installed in a 2004 Mercedes-Benz C-Class
    Crutchfield Customer Review (What's this?)
     
    delivery and packaging were flawless...these Infinity speakers are very solid, and deserve no complaints...installation went very smooth in rear doors of 2004 C240 Benz Wagon...i gutted and re-used the factory housings (not those free ones, thanks anyway Crutchfield) after a few minutes with a utility knife and dremmel tool, no new holes, and very solid...note Benz is Brown = (+)Positive, and Pink = (-)Ground...Sound is what you should expect from Infinity, very clean mids, and bright highs, with better than expected lows...rotatable tweeters allowed upright alignment of the handy screw-down terminals without compromising their aim gently upwards into cabin...nice design ideas, thanks Infinity! Highly recommended.
    Pros:
    Very solidly built, with high quality components throughout, resulting in good punch and clarity, handy screw-down terminals, rotatable tweeters, thoughtful assortment of fastener hardware, moderate price.
    Cons:
    none found
    2 out of 2 people found this helpful
    Was this review helpful?    Yes | No
     
    5 out of 5

    2002 Jeep Wrangler Sound Bar

    Written By SVFOOL, Bakersfield, Calif. on Monday, February 18, 2013
    Installed in a 2002 Jeep Wrangler
    Crutchfield Customer Review (What's this?)
     
    Infinity Kappa 52.11i ...easy install.. awesome sound ... the speaker covers do work with these speakers, you do not have to use the stock covers unless you want to hide what you have in your Jeep, Perfect fit.. installed in less than 30 min with the hardware Crutchfield send for the install... couldn't be happier with these speakers... they sound great even with the stock head unit, cannot wait to get a new head unit to really let these speakers come alive.
    Pros:
    speaker covers do work with these speakers, you do not have to use the stock covers , easy to install..sound great. Screw wiring terminals on the back of the speaker.
    Cons:
    cannot think of any reason anyone wouldnt want to have these in their Jeep Wrangler..
    2 out of 2 people found this helpful
    Was this review helpful?    Yes | No
     
    5 out of 5

    Nice Speakers

    Written By DanH, Conshohocken, PA on Sunday, January 13, 2013
    Crutchfield Customer Review (What's this?)
     
    Nice speakers, sound great.
    Pros:
    Screw wiring terminals
    Was this review helpful?    Yes | No
     
    1-4 of 4

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    Smart people protect with SquareTrade- The best warranty at the best price

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    SquareTrade Warranty 3 Year Warranty
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    Rated 5-stars by consumers

    For a more in-depth review and enhanced detailed information on the Infinity Kappa 52.11i, please visit the Crutchfield website product page (/S-YrrIjy0dBAE/p_1085211I/Infinity-Kappa-52-11i.html ).

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