Infinity KAPPA 50.11CS 5-1/4" 2-way Component Speaker System

Model: KAPPA5011C UPC: 050667368609 Item: 161164

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Product Information

KAPPA 50.11CS Features:

2-way Speakers

Covers the lows and highs of the hearing spectrum.

Adjustable Tweeter Levels

To optimize high frequency sound, you can adjust your tweeters to suit different locations in your car.


Metal Matrix Diaphragms use advanced materials to improve accuracy at an affordable price.

25 – 255 watts suggested amplifier power range

Infinity engineers designed the Kappa 50.11cs component speaker to produce powerful, low-frequency sound from a head-unit or amplifier capable of delivering up to 255 watts of power. This makes the Kappa 50.11cs an ideal midrange and tweeter component upgrade set for systems powered with head-unit or factory amplifier power. They also handle the power from aftermarket amplifiers that are part of very high-fidelity aftermarket upgrades. The Infinity Kappa Series has the power handling requirements covered. Remember, great power-handling specifications increase reliability over the lifetime of the speaker, and that means that you’ll be enjoying the Kappa Series for many musical years.

Injected Carbon Glass Matrix (iCGM) frames

Kappa automotive speakers benefit from light and strong composite Injected Carbon Glass Matrix (iCGM) frames. Kappa Series speakers resist the environmental extremes that a moving car can encounter. They offer superior rigidity, even when mounted on uneven surfaces (common in car mounting locations), and exceptional damping of any resonances.

Vented motor assembly

The Infinity Kappa 50.11cs’s woofer features a vented motor assembly to let the voice coil breathe. It reduces the probability of power compression with systems playing loud over a long period of time. It means a more efficient use of amplifier power so that all the power delivered to the woofer is directed to the voice coil and not wasted as residual heat.

Plus One woofer-cone technology

The Plus One cone on the Kappa series provides more overall speaker-cone area than others in its class. With an effective increase in cone area, the speaker radiates more air. Also, the carbon-injected cone material produces a lighter and stiffer cone. The result is a better low-frequency response and a greater ability to make those important nearly tangible musical notes that people often associate with a larger speaker size.

Edge-driven, soft-dome fabric tweeter

The 3/4-inch (20-millimeter) soft-dome, edge-driven fabric tweeter design in the Infinity Kappa speaker increases power handling while reducing high-frequency distortion. An edge-driven tweeter also has better dispersion characteristics and allows for a lower crossover frequency than comparable tweeters of its size, which improves imaging. The result is improved vocals and clarity in music. There’s no sense in having a speaker play loud if it doesn’t sound clean, too.

2-ohm nominal impedance

The 2-ohm nominal impedance of the Infinity Kappa 50.11cs component speakers allows compensation for any added resistance in thin factory-installed speaker wiring and provides more output than factory speakers or others in its class.

Ultra high-frequency response (up to 35kHz)

A wide frequency response that extends to 35kHz helps compensate for speaker placement variations in the car and human hearing deficiencies in the high-frequency spectrum above 15kHz. The result is that the Infinity Kappa 50.11cs component speakers deliver more of the full-range frequency response that you associate with great sound.

Ultra high sensitivity (93dB @ 2.83V/1m)

High sensitivity allows a wider range of power to have positive results without overdriving the audio system. With a sensitivity of 93 decibels at 2.83 volts/1 meter, the Infinity Kappa 50.11cs component speakers achieve excellent volume and musicality with as little as 5 watts RMS. This sensitivity means better performance overall with very moderate power, whether the speaker’s using a dedicated amplifier or not. The high sensitivity of the Kappa Series makes it ideal for upgrading a factory system’s existing speakers with very noticeable fidelity improvements.

Adjustable, push-button tweeter level control

The Infinity Kappa 50.11cs component speakers feature 0-decibel and +3-decibel settings to custom-tune higher frequencies. Custom tuning allows users to optimize the sound for different in-vehicle locations. You can easily adjust the tuning by pushing a button on the passive crossover.

High-quality passive crossover components

The passive filter components in the crossover network of the Infinity Kappa 50.11cs component speakers use only the best parts, including low-hysteresis polypropylene capacitors, low-loss air-core inductors and high-quality resistors. They are engineered in a way to require minimal parts for the desired filtering, which also means minimizing phase-related anomalies. Overall, the combination results in each Kappa Series speaker having a unique filter arrangement with minimal but very effective parts to achieve true high fidelity, clarity and performance.

Protective, soft, rubber-finish grilles

The Infinity Kappa 50.11cs component speakers feature amazing cosmetics, with a soft rubber finish like the finish on many mobile-phone protective cases or the back of home A/V remote controls. The beautiful chrome inserts on the grille match modern interiors, and there are no visible mounting screws. The grilles are an ideal complement to any installation location where the speakers are not already installed behind a factory-speaker location.

I-Mount tweeter-mounting hardware

The Infinity Kappa 50.11cs component tweeter includes the I-Mount™ (U.S. patent number 5,859,917) tweeter-mounting system, which allows easy flush mounting or surface mounting, giving you more installation options.

Gold-plated, screw-type speaker terminals

Gold resists corrosion from normal automotive use, which makes it ideal for the connections on Infinity Kappa speakers. By adding screw terminals, the speakers ensure tight, long-term connections that also allow reliable connection with the large-gauge speaker cables common in high-end aftermarket installations.


KAPPA 50.11CS Specifications:

General Specifications

  • Power Handling (Continuous/Peak): 85W/225W
  • Recommended Amplifier Power Range: 5W-200W

Audio Specifications

  • Frequency Response: 55Hz-35kHz
  • Nominal Impedance: 2 Ohm
  • Sensitivity (2.83V/1m): 93dB


  • Speaker Diameter (in): 5-5/16"
  • Speaker Depth (in): 2-7/16"
  • Speaker Mounting Diameter (in): 4-11/16"
  • Speaker Mounting Depth (in): 2-1/16"
  • Tweeter Diameter (in): 2-1/4"
  • Tweeter Depth (in): 1-7/16"
  • Tweeter Mounting Diameter (in): 1-15/16"
  • Tweeter Mounting Depth (in): 11/16"
  • Crossover Height (in): 3-1/8"
  • Crossover Width (in): 3-15/16"
  • Crossover Depth (in): 1-15/16"

What's in the Box

What's in the Box

  • 2 woofers
  • 2 tweeters
  • 2 crossovers
  • 2 woofer grilles with rings
  • 2 flush-mount tweeter cups with adapters
  • 2 surface-mount tweeter cups
  • 2 closed-cell foam woofer gaskets
  • Mounting hardware
  • Instruction manual


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