Infinity Kappa 10.11t

3/4" soft dome tweeters

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Item #: 108K1011T

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9 Reviews | 1 question - 1 answer

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You'll have to custom-mount tweeters or midrange speakers, which usually requires drilling holes and running new wires.

Legendary sound

Infinity's Kappa 10.11t 3/4" tweeters continue in the tradition of this legendary line of speakers, bringing you impressive sound quality. Once installed, these tweeters 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, these edge-driven 3/4" soft dome tweeters are a great candidate for your system. The edge-driven" design creates a larger tweeter that handles more power and delivers smooth response way down into 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 includes hardware for surface- or flush-mounting the tweeters, plus Starfish brackets that help you install the tweeters in many factory tweeter openings. The included external crossovers send the appropriate frequencies to the tweeters to protect them from damage.

Great for any system

These 2-ohm tweeters 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 50 watts RMS.

Product Highlights:

  • 3/4" soft dome tweeters
  • 2-ohm impedance
  • flush- and surface-mount hardware included
  • Starfish™ bracket for mounting in factory tweeter locations
  • outboard computer-optimized crossovers
  • power handling: 5-50 watts RMS (150 watts peak power)
  • frequency response: 3,500-35,000 Hz
  • sensitivity: 93 dB
  • flush-mount depth: 3/4"
  • warranty: 3 years
  • Our 60-day money-back guarantee

Hands-on research

What's in the box?

Download owner's manual

  • 2 Tweeters (6" wire attached)
  • 2 Crossovers
  • 2 Flush-mount cups
  • 2 Threaded flush-mount adapters
  • 2 Plastic locking nuts
  • 2 Surface-mount cups
  • 2 Starfish tweeter mounts
  • Six 3/8" Flat head screws
  • Two M4x10mm Machine screws
  • 2 Washers
  • 2 Adhesive backed tweeter grille badges
  • Instructions

Product Research


Edge Driven: The 3/4" edge-driven tweeters use textile soft domes. 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.

Tweeter Mounting: The I-Mount tweeter mounting system and Starfish mounting brackets give you several different ways to mount the tweeters:

  • I-Mount Tweeter Mounting System: The tweeters can be surface or flush mounted with Infinity's innovative I-Mount system:
    • Surface Mount: Surface mounting the tweeters involves screwing the surface-mount cup to the mounting location, then inserting and locking the tweeter into the cup.
    • Flush Mount: Flush mounting is made easy through the use of the threaded flush-mount adapter and plastic locking nut. Once a cutout is made, the flush-mount adapter (with the tweeter installed) is inserted into the hole. The large plastic locking nut is threaded onto the adapter (from behind the mounting surface) to hold the complete assembly securely in place. When flush mounted, the tweeters may be angled for optimum response and imaging.
  • Starfish Mounting Brackets: The Starfish mounting brackets allow the tweeters to be installed in factory locations behind the grilles:
    • Surface Mount (behind grille panel)
    • Flush Mount (behind grille panel)
    • Bottom Mount (to grille panel)
    • Flush Mount (in-dash location)

Tweeter Mounting Dimensions:

  I-Mount Surface Mount I-Mount Flush Mount Starfish Surface Mount (behind grille panel) Starfish Flush Mount (behind grille panel) Starfish Bottom Mount (to grille panel) Starfish Flush Mount (in-dash location)
Mounting Height 0.936" 0.638" 0.940" 0.417" 0.0" 0.063"
Depth 0.326" (screw depth) 0.705" 0.326" (screw depth) 0.523" 1.075" 1.012"
Frame Diameter 1.615" 2.218" 1.653" 2.413" 3.268" 3.268"
Cutout Diameter N/A 1.894" N/A 1.653" N/A 2.825"

Crossover Connections: The crossovers have screw terminal inputs and outputs and will accommodate bare wire or spade connectors up to 0.325" wide.

Crossover Dimensions:

  • Length: 2.406"
  • Width: 1.182" (1.576" including mounting tabs)
  • Height: 1.008"

Power Handling: Although Infinity lists the RMS power handling as 50 watts, they also list the recommended power range as 5-75 watts RMS. We've opted to list the more conservative 50 watt RMS figure on the specifications page.

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.

Infinity Kappa 10.11t Reviews

Average Customer Review:

9 reviews
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Excellent sound

Written By PickyAudiophile, Vancouver, WA on Tuesday, September 23, 2014

Crutchfield Customer Review (What's this?)

Great crossovers, so I don't have to worry about them over played. I added this pair to an existing Kappa system and mounted them high above me. I am just immersed in crystal clear sound. Love it.

Pros: Soft dome, so they aren't harsh. Great quality. Great sound.

Cons: Not the cheapest on your wallet!

kappa tweeters

Written By chucksrevenge, south lyon mi. on Wednesday, May 07, 2014

Crutchfield Customer Review (What's this?)

added that extra excitement to the rest of my infinity speaker system can't wait to get sub in the mix

Pros: great transparentsee to the high end

Cons: none so far

infinity kappa 10.11t review

Written By gklue17, Indialantic, fl on Monday, May 05, 2014

Crutchfield Customer Review (What's this?)

awesome sound!

Good but not great

Written By bdubs504, New Orleans, LA on Sunday, February 16, 2014

Crutchfield Customer Review (What's this?)

I'm still getting used to these tweeters. They have good, clean, crisp sound, with little distortion, but their output/volume is low compared to other tweeters I've had. Tweeters, per se, are not supposed to be "loud," necessarily, but these are soft even for what I expected. Otherwise, I like the way they balance out the mids/lows, creating a fuller, more enjoyable sound stage.

Pros: Crisp, clean, clear

Cons: Low output

Satisfied Customer

Written By J.R.#3, Delano , CA on Monday, November 25, 2013

Crutchfield Customer Review (What's this?)

I am completely satisfied with this product. I have the pleasure of enjoying the performance promised by the product's manufacturers beyond my expectations and expect to never have to replace these tweeters any time soon unless the model to come of course promises better performance.

Pros: Size and applicability.

Cons: None

Infinity Kappa 10.11t tweeters

Written By Hal, Georgia on Sunday, November 17, 2013

Crutchfield Customer Review (What's this?)

I purchased these to upgrade my 2011 Chevy Silverado "post" mounted factory speakers, which were very shrill sounding. I was able to remove the old factory speakers and install the new ones using double sided tape. I am very pleased with the results. Extremely clean sounding. Gives a distinctive brightness that my system did not have. I can now hear sounds that I never knew were there. I changed out the door speakers with the 2ohm Infinity Kappa speakers. Coupled with a Clarion 4 channel class D compact amp and Clarion EQ from Crutchfield, All I can say is what a difference.

Pros: Very high quality. Comes with a variety of surface and flush mounting options. High quality crossover included.

Cons: A little pricey but well worth the money spent.

Infinity kappa tweeter

Written By Chad, Pa on Thursday, October 17, 2013

Crutchfield Customer Review (What's this?)

Overall very good sound install a lot of customizing but well worth money spent installed in stock location in 05 tuscon no cutting just mods to speaker mount on backside.

Pros: Exactly same size as originals

Cons: Mount altering and wiring ( had to use original plug from factory ones )

Infinity Kappa 10.11t

Written By JayR, Rochester.NY on Monday, May 13, 2013

Crutchfield Customer Review (What's this?)

I useed them to replace blown Jeep tweeters in 1998 Grand Cherokee. I used origional mounting plates and altered them a little for the Kappa's. Easy swap and sound better than expected. I'm happy

Pros: Small and shallow. Fit in a small recess. Cross over is also small and fit under dash trim.

Infinity Kappa 10.11t

Written By AlexL, Plymouth, MA on Thursday, April 18, 2013

Crutchfield Customer Review (What's this?)

I didn't end up using them and instead returned them due to ordering the wrong size, but returning was extremely easy and customer service is amazing!

Get everything you’ll need to enjoy your new Infinity Kappa 10.11t

You may need speaker wire to get the signal to your tweeters. It's sold by the foot, so enter the amount you'll need when you get to your cart.
Reduce ambient road noise and your vehicle's "rattles," for better sound inside your car.
The right tools will help keep your installation simple and clean.
T-Spec 16-gauge Speaker Wire

T-Spec 16-gauge Speaker Wire

Black/white jacket — priced per foot

Item #: 120SW16WB1


Stinger PRO Series Speaker Wire

Stinger PRO Series Speaker Wire

Priced per foot (16 Gauge)

Item #: 541SPW516B


T-Spec 12-gauge Speaker Wire

T-Spec 12-gauge Speaker Wire

Black/white jacket — priced per foot

Item #: 120SW12WB1


Dynamat 10415 Xtreme Speaker Kit

Dynamat 10415 Xtreme Speaker Kit

Two 10-in. x 10-in. Sheets

Item #: 15410415


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Dynamat 10435 Xtreme Door Kit

Dynamat 10435 Xtreme Door Kit

With four 12" x 36" sheets — covers two doors

Item #: 15410435


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Dynamat SuperLite Tri-Pak

Dynamat SuperLite Tri-Pak

Triple package — 3 sheets, 12 square feet (Model #10612)

Item #: 15410612


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Bojo Trim Panel Tools

Bojo Trim Panel Tools

Set of 6 pry tools — helps remove interior and exterior trim and door panels

Item #: 126CR6NGL


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S&G Wire Cutter/Stripper Tool

S&G Wire Cutter/Stripper Tool

Cuts and strips 12- to 22-gauge wire

Item #: 18119100


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Pro.Fit Wire Worm

Pro.Fit Wire Worm

Installation tool helps route wiring through tight spaces

Item #: 042DM4533


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Metra Crimp Tool and Connectors

Metra Crimp Tool and Connectors

Package contains crimp tool and over 150 pieces

Item #: 120CRIMPKT


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S&G Tool Aid 87615

S&G Tool Aid 87615

Window and Door Clip Removal Tool

Item #: 18187615


S&G Tool Aid 87650

S&G Tool Aid 87650

Door Trim and Panel Removal Tool

Item #: 18187650


Pro.Fit Hook Tool Set

Pro.Fit Hook Tool Set

Installation tools — pair

Item #: 042DM3022


Pro.Fit Trim Panel Tool

Pro.Fit Trim Panel Tool

Remove your vehicle's trim panels without damage

Item #: 042DM4022


Skewdriver Pro SPK4042

Skewdriver Pro SPK4042

Ratcheting straight and offset screwdriver set with 40 bits (Skewdriver Pro with ratchet handle, pictured)

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Spec Tools SQR-200a Squeeze Wrench

Spec Tools SQR-200a Squeeze Wrench

Narrow space ratchet kit with 18 sockets

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Bojo Trim Panel Tools

Bojo Trim Panel Tools

Set of 6 pry tools — helps remove interior and exterior trim and door panels

Item #: 126CR6LNGL


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Posi-Products™ Car Speaker Connectors

Posi-Products™ Car Speaker Connectors

8 connectors for installing car speakers

Item #: 669PP502


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DEI Heat Shrink Tubing

DEI Heat Shrink Tubing

Black 4-foot length (Assortment)

Item #: 696010839


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Questions & Answers Ask the community. Share your knowledge.

1 question already asked

For information on replacing the factory tweeters please contact an Advisor by phone or online chat. They will be able to pull up your vehicle and see if we have install information for the front door tweeters in your vehicle. [ Jeff  Dec 16, 2013 ]  Staff