"Perfect." It takes a lot of confidence to use that word to describe a product. But, after hearing the Infinity Kappa Perfect 6.1 6-1/2" component system, you'll understand why Infinity chose the name. Infinity's engineering talent combines with 21st century technology to produce a component system that delivers superb musical detail and incredible power handling.

The 6-1/2" woofer's aluminum construction allows the reproduction of deep bass at high levels, while the butyl rubber surround minimizes speaker distortion for remarkable clarity. The 1" anodized aluminum dome tweeter is suspended by a butyl rubber surround, dampening the resonant frequency of the tweeter for increased accuracy and excellent power handling. The tweeter can be flush- or surface-mounted — when flush-mounted, the tweeter can be angled to improve imaging.

The 2-way crossover uses a 3500 Hz (24 dB/octave) high-pass filter for the tweeter and a 3500 Hz (24 dB/octave) low-pass filter for the woofer for exceptionally natural sound. Each crossover features 3-way selectable tweeter output (-4 dB, 0 dB, +5 dB) for optimizing your system's response. Infinity has created a component system for the most demanding listener — don't settle for anything less than Perfect!

Priced per system

Product Highlights:

  • anodized aluminum woofer with butyl rubber surround
  • 1" anodized aluminum dome tweeter
  • 2-way crossover (high-pass and low-pass, 3500 Hz at 24 dB per octave)
  • surface- and flush-mount adapters included
  • frequency response 75-23,000 Hz
  • power range 25-100 watts RMS
  • peak power handling 400 watts
  • sensitivity 90 dB
  • top-mount depth 2-5/8"

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.

Hands-on research

What's in the box?

Download owner's manual

  • 2 component mid/woofer speakers
  • 2 grilles
  • 2 component tweeters with attached 10" wires
  • 2 flush-mount cups
  • 2 threaded flush-mount adapters
  • 2 plastic locking nuts
  • 2 surface-mount cups
  • 2 crossovers
  • 2 self-adhesive foam gaskets
  • 2 metal mounting rings
  • 4 female quick slides
  • 8 speed clips
  • 2 nuts
  • 2 clip washers
  • Four 5/8" self-tapping screws
  • Four 7/16" self-tapping screws
  • Eight 1/2" machine screws
  • Eight 1" self-tapping screws
  • Instructions
  • Warranty/Registration card

Features and Specs

Design 2-way
Tweeter Design Dome
Tweeter Composition Anodized Aluminum
Woofer Composition Anodized Aluminum
Woofer Surround Butyl rubber
Parts Warranty 3 YEARS
Labor Warranty 3 YEARS
Sensitivity 90 dB at 1 watt
Frequency Response 75 - 23k Hz
RMS Power Range (Watts) 25-100
Peak Power Handling (Watts) 400
Impedance (Ohms) 4
Top-mount Depth (Inches) 2 5/8
Bottom-mount Depth (Inches) N/A
Cutout Diameter or Length (inches) 5 1/16

Product Research

Additional Dimensions


Woofer Cone Materials: The woofer cone's deep anodized-aluminum construction provides extremely high stiffness for its moving mass, allowing the speakers to reproduce deep-bass frequencies at high levels. The woofers feature 1.5" voice coils.

Butyl Rubber Woofer Surrounds: The butyl rubber surround has greater internal loss than standard urethane, preventing harmonic distortion at higher frequencies. It more efficiently absorbs edge reflections that can cause audible distortion, resulting in clearer bass performance.

Tweeter Materials: The 1" tweeters feature an anodized-aluminum dome suspended by a rubber surround. The tweeters are driven by a powerful neodymium magnet, resulting in higher power handling and superior detail. The rubber surround helps reduce the resonant frequency of the tweeter, giving you cleaner, more accurate reproduction.

"I-Mount" Tweeter Mounting System: Surface mounting involves mounting the surface mount cup (with two screws), then snapping the tweeter into the cup. Flush mounting is made easy through the use of the threaded flush mount adapter and plastic locking nut. For flush mounting the tweeter is snapped into the flush mount cup. Then the cup is secured to the flush mount adapter with a nut and clip washer. Once a cutout is made, the flush mount adapter (with the tweeter installed) is inserted through 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. There are no provisions for angled surface mounting of the tweeters

Selectable Tweeter Output Level: Each crossover has 3 adjustments that allow you to select the tweeter output level according to system requirements and personal preference. The adjustments may be set to "-4dB", "5dB" or "0dB".

2-way Crossovers: The included crossovers use a 24dB/octave, 3500Hz high pass filter for the tweeters and a 24dB/octave, 3500Hz low pass filter for the woofers.

Crossover Mounting: There are 4 mounting holes in the base of each crossover; screws to mount the crossovers are not supplied. The crossovers are not weather proof, so they should not be mounted in locations, such as door panels, that will expose them to direct contact with water.

Gold Plated Crossover Terminals: The crossover terminals are gold plated for corrosion resistance.

Additional Dimensions

Tweeter Mounting Dimensions:

Surface Mount Flush Mount
Mounting Height 1.006"   0.628"
Depth (0.334" screw depth) 1.125"
Frame Diameter 1.643" 2.005"
Cutout Diameter   NA 1.768"


Crossover Dimensions: W = 5.913", H = 1.546", D = 4.485"

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 Perfect 6.1 Reviews

Average Customer Review:

6 reviews
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unreal clarity

Written By Daniel, Hutchinson, KS on Monday, May 22, 2006

Crutchfield Customer Review (What's this?)

These speakers are truly amazing for the price. I cleanly installed them in my 1997 accord along with kappa rears 693i and two 12" kicker cvr subs. I had an audiobahn 400 watt amp powerering the components which was fine, but would be alot cleaner with an infinity amp. You can hear things in the music you've never heard before with NEVER ANY DISTORTION even when the volumes to high to sit in the car. Highs are a little harsh sometimes and they take frequent adjusment with reciever, only because all music is recorded differently. Keep in mind that I fanatically adjust everything and maybe it won't be a problem for you. I actually rolled that car while "adjusting" the stereo but was able to salvage every component and will put them in my 98 TL.

Infinity Kappa Perfect 6.1

Written By ryan, china, michigan on Monday, November 21, 2005

Crutchfield Customer Review (What's this?)

perfect for lack of a better word. the louder they go the better they sound. required for any real system.

Perfect does not even begin to describle the sound quality

Written By John, Pittsburgh, PA on Tuesday, October 25, 2005

If they fit your whip, there should be nothing hold'n you back, Get'm in....


Written By RYAN, OKLAHOMA CITY, OK on Friday, May 27, 2005


They weren't kidding when they said PERFECT

Written By Will, Flemington, NJ on Friday, April 08, 2005

They really weren't kidding when they said perfect. These are the best speakers I've heard in a car. I have them in my 95 Maxima. I have the tweeters mounted on my door next to the window so they are almost ear level and they sound so amazing. There is no distortion at the levels I listen to (which is pretty high!) I'm going to be amplifying these speakers soon and I can't wait to hear the result!!

Perfect, Like no other.

Written By Clement, Mount Crawford, Virginia on Monday, February 21, 2005

All I can say is Perfect is the right word for these, they are incredible. These speakers sound like you are at a concert in the front row and you'll hear everything like the artist intended it to be heard. You can't go wrong with these very High-end Component Speakers. Make sure you have at least a 70x2 amp or more to run these power hungry great sounding speakers.

CPB, Mount Crawford, Va

Get everything you’ll need to enjoy your new Infinity Kappa Perfect 6.1

Reduce ambient road noise and your vehicle's "rattles," for better sound inside your car.
You'll need speaker wire to connect your speakers to your amp.
Keep your speakers clean and dry. They compress to fit behind your speakers.
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