Kappa 50.11cs

Item# KAP-50.11CS
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A true high-fidelity 5-1/4" (130mm) component speaker system for your car. Will you love the Infinity® Kappa® Series 50.11cs 5-1/4-inch (130-millimeter), two-way component speaker system? Yes, if you love spectacular sound. The system’s tweeter has a soft-dome, edge-driven fabric diaphragm for improved power handling and wide high-frequency dispersion. The woofer uses proprietary Injected Carbon Glass Matrix (iCGM) frames and patented formed-glass-fiber Plus One® (U.S. patent no. 7,548,631) cones. Overall, the system’s components have the technology and materials to make your ride a musical pleasure.
At a Glance:
  • 25 – 255 watts suggested amplifier power range
  • Injected Carbon Glass Matrix (iCGM) frames
  • Vented motor assembly
  • Plus One woofer-cone technology
  • Edge-driven fabric soft-dome tweeter
  • 2-ohm nominal impedance
  • Ultrahigh-frequency response (up to 35kHz)
  • Ultrahigh sensitivity (93dB@2.83v/1m)
  • Adjustable, push-button tweeter level control
  • High-quality passive crossover components
  • Protective, soft, rubber-finish grilles
  • I-Mount tweeter-mounting hardware
  • Gold-plated, screw-type speaker terminals
What's in the box:
  • 2 Infinity Kappa component 5-1/4" (130mm) woofers
  • 2 Infinity Kappa component 3/4" (20mm) tweeters
  • 2 passive crossover networks
  • 2 protective grilles
  • 1 foam tape for mounting surface
  • 2 I-Mount tweeter housings with hardware
  • 2 Infinity badges for tweeter grilles
  • Miscellaneous mounting hardware
  • Owner’s/installation manual
A true high-fidelity 5-1/4" (130mm) component speaker system for your car. Why settle for merely adequate car audio? You don’t have to, because the Infinity® Kappa® Series 50.11cs 5-1/4-inch (130-millimeter), two-way component speaker system brings top-quality sound to the automotive space. If you like deep, powerful low-frequency sound, the system has you covered; its woofer has proprietary Injected Carbon Glass Matrix (iCGM) frames and patented formed-glass-fiber Plus One® (U.S. patent no. 7,548,631) woofer cones for rich, strong bass. For high tones, you’ll love the improved power handling and wide high-frequency dispersion of the system’s 3/4-inch (20-millimeter), soft-dome, edge-driven fabric diaphragm tweeter. For the transition from low notes to high, you can trust the system’s ultrahigh-quality, low-loss air-core inductors in the passive filter networks. Even the soft-touch, rubberized finish on the protective grilles and the low-hysteresis polyproplyene capacitors reveal superb attention to detail. The music in your car will sound magnificent, just as you want it to.
Product Features:
  • 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.
  • Ultrahigh-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.
  • Ultrahigh 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.
Manuals & Downloads:
General Specifications:
Power Handling (Continuous/Peak)
Recommended Amplifier Power Range
Audio Specifications:
Frequency Response
Nominal Impedance
2 Ohm
Sensitivity (2.83V/1m)
Speaker Diameter (in)
Speaker Depth (in)
Speaker Mounting Diameter (in)
Speaker Mounting Depth (in)
Tweeter Diameter (in)
Tweeter Depth (in)
Tweeter Mounting Diameter (in)
Tweeter Mounting Depth (in)
Crossover Height (in)
Crossover Width (in)
Crossover Depth (in)

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