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Infinity Kappa Perfect 900

Kappa Perfect Series 6"x9" component speaker system

Item # 108PERF900

Infinity's flagship Kappa Perfect Series speakers look so good and feel so solidly built that it's a shame you...

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Infinity's flagship Kappa Perfect Series speakers look so good and feel so solidly built that it's a shame you...

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Item # 108PERF900

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$549.99

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About the Infinity Kappa Perfect 900

Put Perfect sound in your car

Infinity's flagship Kappa Perfect Series speakers look so good and feel so solidly built that it's a shame you probably won't lay your eyes on them again after they're installed, but it's a small price to pay to experience unrivaled audio in your vehicle. This Kappa Perfect 900 6"x9" component system is a heart-and-soul Infinity creation, utilizing the very best technology and materials available to their engineers.

Put Perfect sound in your car

Infinity's flagship Kappa Perfect Series speakers look so good and feel so solidly built that it's a shame you probably won't lay your eyes on them again after they're installed, but it's a small price to pay to experience unrivaled audio in your vehicle. This Kappa Perfect 900 6"x9" component system is a heart-and-soul Infinity creation, utilizing the very best technology and materials available to their engineers.

Infinity Kappa Perfect 500

Add the optional Kappa Perfect 3-1/2" midrange speaker to this system and change the crossover settings with the flip of a switch

High-definition tweeters

Prepare to hear nuance and detail in your favorite music that you never knew was there. Infinity uses edge-driven polyimide dome tweeters to achieve a frequency response up to 30,000 Hz. The "edge-driven" design creates a larger tweeter that handles more power and delivers smooth response way down into midrange frequencies as well. You'll hear a more clearly defined soundstage where you can picture the placement of every instrument.

Tweeter mounts included

While installing tweeters can sometimes prove challenging, Infinity includes versatile hardware for surface- or flush-mounting, making the job much easier in most vehicles.

Carbon fiber woofer with Plus One+ technology

Infinity uses a carbon fiber woofer that weighs less than traditional materials, so you don't need a ton of power to drive this woofer, but the oversized voice coil certainly allows for awesome power-handling if you're driving this system with an amp. Infinity's Plus One+ woofer technology extends the cone right up to the edge of the basket, giving you more surface area than with most comparable speakers. A bigger cone means more bass to complement the superior high-frequency response. The included external crossovers send the appropriate frequencies to the tweeters and woofers.

Want a 3-way Kappa Perfect system?

Infinity makes it easy to turn this Kappa Perfect 2-way component system into a 3-way system with the addition of optional 3-1/2" midrange speakers. Simply flip the switch on each Kappa Perfect crossover to a 3-way system configuration for a well-rounded sound. These speakers 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 150 watts RMS.

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Product highlights:

  • component speaker system includes 2 woofers, 2 tweeters, and 2 crossovers
  • 6"x9" Plus One+ carbon fiber woofer
  • edge-driven polyimide dome tweeter
  • mounting brackets for easier tweeter installation in factory locations
  • switchable 2-way and 3-way external crossover network in weatherproof housing
  • 3.5-ohm impedance
  • handles up to 150 watts RMS (600 watts peak power)
  • frequency response: 40-30,000 Hz
  • sensitivity: 91 dB at 2.83 volts
  • woofer top-mount depth: 3-3/8"
  • grilles included
  • warranty: 3 years
  • Our 60-day money-back guarantee
  • MFR # Perfect 900
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What's in the box:

  • 2 Woofers
  • 2 Crossovers
  • 2 Tweeters (each with 10" wire attached)
  • 2 Flush mount housings
  • 2 Plastic locking nuts
  • 2 Surface mount housings
  • 2 Woofer grilles
  • 2 Woofer grille rings
  • 2 Woofer bottom mount rings
  • Eight 1-1/8" Screws
  • Eight 1" Screws
  • Four 1/2" Flat head screws
  • 8 Speed clips
  • 4 Adhesive backed foam gaskets
  • Installation instructions

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Infinity Kappa Perfect 900 reviews

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Infinity Kappa Perfect 900

Crutchfield customer from Ocklawaha, FL on 11/14/2018

2018 Ford F-150 XLT

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Perfect fit, sounds great!

Pros:

Cons:

Crutchfield response on

1 of 1 found this helpful

Infinity Kappa Perfect 900

Marc from Texas on 9/19/2017

2010 Nissan Titan

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Great quality!

Pros:

Cons:

Crutchfield response on

1 of 4 found this helpful

Save your money so you can buy the PERFECT system it's worth it

Craig from Meridian, ID on 10/15/2016

2004 Lexus RX330

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Let me first start with I would have given a 5 star if the crossover wasn't the size of my factory amp. So that said they are better sounding then some of the best speakers I've purchased in the past and I can't think of a time other then when I was younger and couldn't afford the higher end stuff that I speed the cost on my systems. The factory speakers for my 04 RX 330 had given me some big options for being I've always had the infinity brand beforehand and my local shop never said the had these just the kappa or reference. I read the specs on the perfect series, thought these handled more and looked built way better. So I got these and the 6 3/4 for my doors I wish the the 300 would of fit my dash. Got them installed no problems with the plate adapters. Was really wondering how I was going to put this monster of a crossover anywhere near the speakers or ha to run tons and tons more wire. The fit under the door panels with a little extra brainstorming and mcgivering. Dynamatted the doors inside and out and thought well it would not be that big a difference from my kappas I had. WOW the 6x9 has the ability for some higher rms power and just the factory amp was making this deliver deep bass and at little power being the source. I'll be running a lot more when I'm done so this will be no doubt the best system I might have ever had. And my last one was very nice. Definitely worth the money

Pros: Big power capabilities, 3 way crossover, tweets super bright, are made for the people who want the sound to be PERFECT

Cons: MONSTER crossover so make sure you know how to make things work before thinking they'll juatndit anywhere. And be ready to pre wire the door and have a flat place to hook all the wires up or you'll be digging the screws out of the monster as it's as big as some amps the make. Other then that not much bad to,say

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28 of 33 found this helpful

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More details on the Infinity Kappa Perfect 900

Pat M.

Features & specs

General
Speaker Size 6x9
Design 2-way
Tweeter Design Edge-Driven Dome
Impedance (Ohms) 3.5
Tweeter Composition Polyimide
Woofer Composition Carbon Fiber
Woofer Surround Rubber
Parts Warranty 3 Years
Labor Warranty 3 Years
Specifications
Sensitivity (1W at 1 meter) N/A
Sensitivity at 2.83 volts 91
Frequency Response 40 - 30k Hz
Minimum RMS Wattage ---
Maximum RMS Wattage 150
Peak Power Handling (Watts) 600
Top-mount Depth (Inches) 3 3/8
Bottom-mount Depth (Inches) 4 3/16
Cutout Diameter or Length (inches) 0

Product Research

Features

Plus One Woofer Cones: The Plus One woofer cones offer more surface area than other speakers that fit in the same size opening. This is accomplished by using a new basket design and hi-roll surround. The result is greater bass output and a significant increase in efficiency.

Terminals: The woofers' input terminals are set screws that will accept up to 14 gauge bare wire.

Tweeter Mounting: Using the included housings the tweeters can be flush mounted or surface mounted. The tweeter can pivot in the flush mount housing, so it can be directed to optimize imaging.

Tweeter Dimensions:

  Flush Mount Surface Mount
Mounting Height 0.473" 1.33"
Mounting Depth 1.383" screw depth
Frame Diameter 2.661" 2.25"
Cutout Diameter 2.125" N/A

Crossovers: The crossovers can be set to 2-way (the default position, for use with the included woofer and tweeter) or 3-way (for use with the included drivers plus the optional Kappa Perfect 300M midrange, sold separately). Each crossover also has a tweeter output level switch (choose between high and low output). The inputs and outputs are screw terminals that will accept bare wire or spade connectors up to 0.275" wide. There are four mounting holes in the base of each crossover.

Crossover Dimensions:

  • Length: 5-1/2"
  • Width: 7-15/16"
  • Height: 1-5/8"

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Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
One of the very few high quality 6x9 component sets that are optimized for use as 3-ways as well [ Kenton  Jun 04, 2019 ]

3 questions already asked

Q
On the Infinity website they claim that this system will fit my 2016 Ram 1500 regular cab base model pickup. Why does Crutchfield say it doesn't? I'd rather buy it from you guys.
[ Chuck  Jan 25, 2019 ]
1 answer
A
The 6x9 speaker fits the door opening perfectly. I believe Crutchfields site says it doesn't fit because of the tweeter not being a factory piece. I moved it around the cab with tape for a couple of days until I found a spot the sounded the best for me which ended up being on the upper part of the door panel.
[ Randy  Jan 26, 2019 ]
Q
Can someone tell me why there are outputs on the crossover for. Woofer, Mid, and Tweets. There's only the 6x9 driver and the tweeter. Hmmmm??
[ Timmm  Jul 24, 2018 ]
2 answers
A
Because Infinity also sells a 3 1/2" mid range kappa perfect that can be added for more range. I bought them and put them in the dash of my truck to replace the factory speakers.
[ Randy  Jul 24, 2018 ]
A
It comes with a 3 way crossover for adding a midrange if you decide too purchase it. If you don't buy the midrange just leave it empty.
[ JaRon  Jul 24, 2018 ]
Q
Can you tell me where the crossover points are and what kind of slope 6 db, 12 db etc? Thank You
[ Bob Kraemer  Jun 16, 2018 ]
1 answer
A
I'm afraid Infinity doesn't provide specifics about the crossover points and/or slope for the Kappa Perfect 900 component speakers. For more details on that, feel free to check out Infinity's support site directly: https://www.infinityspeakers.com/support-knowledgebase.html You can also contact a Crutchfield Advisor directly by phone (888.955.6000) or online chat to discuss further.
[ Larry  Jun 23, 2018 ]  Staff

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