Infinity Kappa 10.11T

3/4" Kappa Series Soft Dome Tweeters w/ Crossovers

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Hear all the high frequencies that your sound system is missing

The Infinity Kappa Series 10.11T 3/4" Soft Dome Tweeters with Crossovers can turn any car into a high-fidelity audio lover’s dream. The tweeter is a soft-dome, edge-driven fabric diaphragm provides spectacular power handling and broad high-frequency dispersion. You’ll roll down the highway with the best sound you can imagine.

2-ohm nominal impedance

The 2-ohm nominal impedance of the Infinity Kappa 10.11t component tweeters allows compensation for any added resistance in thin factory-speaker wiring and provides increased output when compared to factory speakers or others in its class.

Ultrahigh sensitivity

High sensitivity allows a wide 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 10.11t component tweeters 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.

High-quality passive crossover components

The passive filter components in the crossover network of the Infinity Kappa 10.11t component tweeters use only the best parts, including low-hysteresis polypropylene capacitors, low-loss air core inductors and high-quality resistors. We have engineered them 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.

I-Mount tweeter-mounting hardware

Infinity Kappa 10.11t component tweeters include the I-Mount tweeter-mounting system, which allows easy flush mounting or surface mounting, giving you more installation options.

The Sound of quality

Sonic Electronix, one of the leaders in car audio, recently visited Harman, the premium global audio and infotainment group, at their research and development locations in Northridge, California and Detroit, Michigan. The purpose of these visits was to utilize and combine the powerful brand of Harman and the industry leading knowledge behind Sonic Electronix to begin working together on developing future car audio projects.

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General Features:

  • 3/4" Kappa Series Soft Dome Tweeters w/ Crossovers
  • Power Handling:
    • Peak: 150 watts per pair
    • RMS: 5-50 watts per pair
  • 3/4" Soft dome tweeter
  • 2 ohms impedance
  • Frequency Response: 3500-35,000 Hz
  • Flush-mount Depth: 3/4"
  • Sensitivity: 93dB
  • Outboard computer-optimized crossovers included
  • Starfish bracket for mounting in factory tweeter locations
  • Authorized Internet Dealer
  • 3-year Manufacturer's Warranty

Priced Per Pair

Tweeter Specifications

Priced Per
Car Tweeters are typically sold in pairs so you will receive 2 tweeters for each purchase on tweeters marked "Priced Per Pair". If a tweeter is marked "Priced Per Each" then the tweeter is sold individually and each purchase you make will result in 1 tweeter. High-powered tweeters are typically sold per each tweeter.
Tweeter Size
Refers to the size of the tweeter. Typically, smaller tweeters produces less output with higher frequency response.
Tweeter Design
Designs such as cone, dome, semi-dome, balanced dome, and whizzer are most popular. Cone tweeters are simple, efficient and typically are the most reasonably priced. Dome tweeters are used in most home speakers, and provide a smoother and more accurate sound. Semi-dome design is one with a dome placed inside a cone. A Balanced dome driver is a semi-dome with equal reproduction area given the cone and dome portions of the driver. A whizzer tweeter is a separate tweeter cone driven by the voice coil of the woofer.
Soft Dome
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
150 watts
RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
5-50 watts
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
93 dB
Frequency Response
The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
3,500 - 35,000 Hz
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
2 ohms
Top-Mount Depth
The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.

Warranty and Return Policy

Parts Warranty Duration
3 years
Labor Warranty Duration
3 years
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
2 Star
1 Star

Average Attribution Rating


Chicago, IL


November 8, 2014

I had the Polk 1" silk tweeters which sound pretty good but I had them amped and they couldn't take much power before distorting but I will never waste my money again because These tweeters are hands down THE BEST , so crisp , and they fit perfect, even has their own separate crossover, I have them amped as well and they never distort out, I mean never, just pure musical bliss. These took me to the next level

23 of 28 found this helpful

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New Albany, IN

great tweets and stylish

October 21, 2013

I am very impressed with these tweeters not only do they look great they come with the ability to mount with multiple mounts. it makes them extremely versatile and able to be used almost anywhere. I absolutely recommend and would buy these again.

20 of 25 found this helpful

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New Albany, IN

Perfect for my application

October 3, 2013

Can't say enough good things about these but I'll try. To start they look great and the quality is top notch. Versatile with many different options for mounting I used the flush mount and they look awesome. Even with entire car amplified except these you can still here the highs from them. I would absolutely recommend and would buy again

14 of 19 found this helpful

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Verified Purchase
Great value

August 8, 2015

I had a pair of older Infinity kappa tweeters but one of my old tweeters quit working so I ordered a pair of Infinity kappa tweeters from Sonic Electronic because because of there fast delivery and great prices.when ever i want any audio electronics...I always come to sonic

1 of 2 found this helpful

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Accessory Tools and Products

Accessories added


25 ft. of True Spec 16 Gauge EnvyFlex Speaker Wire

Your Price $17.99

Belva BBSW167

16 Gauge 7 Meter (23 Ft) Speaker Wire

Your Price $12.99

Door Panel & Upholstery Remover Tool

Easily remove your door panels and other panels to make the installation of your new tweeters easy.

Your Price $6.99

Car Stereo and Speaker Installation Tool Kit

Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.

Your Price $14.99

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JL Audio M100-CT-SG-WH - White with Sport Grilles

• Centrex® UV resistant polymer baskets and grilles
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Browse 2 questions and 1 answer
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Why did you choose this?
Sonic Electronix Store
Looking to upgrade the tweeters in my 2013 Jeep Wrangler. This is will be my second upgrade. The ones I currently have were purchased from Quadratec. They are a big improvement over the stock tweeters but "too bright" for my taste. Ear fatigue sets in fast at mid to high volume. I'm expecting these to blend well with my Infinity sub.
John H on Aug 28, 2015
how do i wire this in with my 6.5 driver?
A shopper on Apr 2, 2015
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Product Summary


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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Infinity Kappa 10.11T

  • Infinity Kappa Series Speakers | Coaxial and Component Car Speakers

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Infinity Kappa 10.11T

3/4" Kappa Series Soft Dome Tweeters w/ Crossovers


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25 ft. of True Spec 16 Gauge EnvyFlex Speaker Wire


Door Panel & Upholstery Remover Tool

Easily remove your door panels and other panels to make the installation of your new tweeters easy.



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