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Infinity Kappa 60.9cs

6-3/4" component speaker system
For 6-1/2" and 6-3/4" openings

41 Reviews

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Our take on the Infinity Kappa 60.9cs

Infinity built their Kappa Series speakers with improved technology and high-end materials to provide you with outstanding sound reproduction. The Kappa 60.9cs component speaker system features 6-3/4" woofers with responsive woven glass-fiber cones that won't flex during a hard workout. The Plus One design offers a larger surface area for improved low-frequency output and efficiency, while longer voice coils add a little more punch to the bass. Large magnets keep the woofers running cooler by placing more steel close to the voice coils to act as a heat sink.

Infinity built their Kappa Series speakers with improved technology and high-end materials to provide you with outstanding sound reproduction. The Kappa 60.9cs component speaker system features 6-3/4" woofers with responsive woven glass-fiber cones that won't flex during a hard workout. The Plus One design offers a larger surface area for improved low-frequency output and efficiency, while longer voice coils add a little more punch to the bass. Large magnets keep the woofers running cooler by placing more steel close to the voice coils to act as a heat sink.

Textile dome tweeters
Infinity uses the same textile dome tweeters found in many of their popular home speakers with this Kappa system, so you'll hear the music the way it was recorded with minimal coloration or distortion. The tweeters handle down to 2,500 Hz, almost an octave below the tweeters in many systems, so you'll hear more definition and detail, no matter where you sit. Infinity includes mounting hardware to install the tweeters in custom or factory openings.

Premium crossover networks
The computer-optimized outboard crossover networks employ audiophile-grade components to separate highs and lows, so that the woofer and tweeter work together perfectly. You can attenuate tweeter response by 6 dB to get the perfect sonic balance if you've mounted the tweeters in a less-than-ideal factory location.

Pre-wired crossovers eliminate a time-consuming step in your installation, and terminals at the end of the crossover wires screw directly to the Kappa woofers and tweeters, leaving no chance for incorrect wiring.

Note: Infinity describes this model as a 6-1/2" speaker. Most manufacturers designate this same frame size as a 6-3/4" speaker. For simplicity's sake we list it as a 6-3/4" speaker.

Important Note: You should use an outboard amplifier to power these speakers.

Note: These woofers don't use a standard 6-1/2" speaker bolt pattern — you'll have to drill new screw holes in either your vehicle or the included bracket in order to mount them in 6-1/2" speaker openings.

Product Highlights:

  • 6-3/4" component speaker system includes woofers, tweeters, and crossovers
  • fit 6-1/2" openings with modification
  • True Four Ohm Impedance technology: speaker's 2-ohm impedance combines with speaker wire impedance for a 4-ohm load
  • compatible with virtually all factory or aftermarket car stereos
  • Plus One® woven-glass-fiber woofer cone with hi-roll rubber surround
  • 1" ultra-high frequency textile dome tweeter with I-Mount™ and Starfish™ for multiple mounting options
  • 2-way external crossover network with tweeter level adjustment
  • direct-connect crossover dongle
  • power range: 2-90 watts RMS (270 watts peak power)
  • frequency response: 45-35,000 Hz
  • sensitivity: 93 dB
  • woofer top-mount depth: 2-7/16"
  • warranty: 3 years
  • Our 60-day money-back guarantee

Bought these 3 months ago.have had no troubles or complaints other than that microscopic allen wrench.running them at 2ohm.have 250 Watts going through them. Best 360 I've ever spent on 2 pair of speakers.

Terry b., pa

What's in the Box:

  • 2 Woofers
  • 2 Grilles
  • 2 Grille rings
  • 2 Crossovers
  • 2 Tweeters
  • 2 Flush-mount cups
  • 2 Threaded flush-mount adapters
  • 2 Plastic locking nuts
  • 2 Surface-mount cups
  • 2 Starfish tweeter mounts
  • 2 Metal 6-1/2" Adapter rings
  • 2 Plastic multi-hole 6-3/4" Adapter rings (including GM/Chrysler 6-3/4G)
  • Twelve 1" Self-tapping screws
  • Six 5/8" Self-tapping screws
  • Eight 1/4" Self-tapping screws
  • Six 3/8" Flat head screws
  • Two 3/8" Bolts
  • Eight 3/16" Bolts
  • 4 Washers
  • 12 Speed clips
  • 1mm Allen wrench
  • 4 Adhesive backed foam gaskets
  • Instructions
  • Warranty information

Featured Video:


Infinity Kappa 60.9cs Reviews

Average Customer Review(s):

(41 Reviews)


GEORGE from Hackettstown, NJ on 7/2/2016

2008 Dodge Durango

I had these installed in my front doors in 2008 to improve the sound of the stock Dodge (6CD/DVD, Sirius-XM Head unit), great improvement! Last year, son gave me Kappa 2 ways for back door, nice. I installed a Kenwood KDBTC955HD Head Unit, awesome. I was going to have my trusty Alpine MRV 353 5 way amp installed, but installation plus a decent OFC kit and RCAs, I decided to wait. I love the setup as is, maybe for my BD I'll pony up the $$$ and have the Alpine installed.

Pros: Made OEM H/U shine. Got them open box for a discount! WOW!

Cons: Not much bass.

Infinity Kappa 60.9cs from Maryland on 9/24/2012

Crutchfield Customer Review (What's this?)

Good sound. The mid range is now alive. I got these because they were 2 ohm and wouldn't reduce volume for the factory sytem and to require less power when I get aroung to installing an amp. Bought for front doors on my Ram 2500. Didn't use crossovers because Alpine system already installed in line. I'm no pro installer, but everything went well with the Scoche 6x9 to 6.5" adapters. I'm not a fan of the seperate speaker terminals. They were in the way and much more difficult to connect than std ones, especially since I had the connectors for the factory ones. Crutchfield says these do not fit front doors only back doors. The only thing I did different from what I've seen others do is place hole for tweeter on Scoche adapters to the bottom instead of top. A very minimal difference which may have help it clear the reinforcement for the windo bracket. I haven't installed to tweeters in the headliners yet. I had already upgraded the dash speakers so I didn't need anymore tweedance up front.

Pros: Sound quality

Cons: wire connector blocks may be a better connection, but in my case made installation more difficult.

High Power Listening

FoxThunder from Lansing, MI on 8/22/2012

Crutchfield Customer Review (What's this?)

Install was a breeze, beware the tweeters are huge, also note Crutchfield has the impedance of this set at 4ohms when they are 2ohms, which is some what of a bonus as they will allow more power from the connected amplifier, I have these connected to a Orion XTR5004 80watts RMS x4 @ 4ohms but with the 2ohm it's 125watt RMS, so with that being said I have to adjust their level down a bit about -4 to -5 to balance them out with the rears, these comp where installed in a 02 Oldsmobile Bravada, so I had to custom mount the tweeters, so use a Hole Saw slightly bigger than 2 - 1/8, a nice feature with the tweeters is the ability to point them where you want for better sound imaging, now the sound of the tweeters are between what a aluminum like tweet and a silk dome tweet would sound like not to soft not to sharp, My Head Unit is a Pioneer DEH-80PRS I pretty much can get what I want out of the tweeters if I want them soft or sharp the option is their, the mid woofer is OK, the Bravada's doors are pretty well sound deadened and the mid's are just OK not great, a bit soft at low to moderate listening levels, but at higher listening levels you think you had a different set of speakers, I have these X-over at 100hz /12db, using a DD1 to make sure their is absolutely no distortion from head unit and amplifier this comp set shines at about 3/4 volume they just come alive from their any higher and your asking for some hearing loss :) I am happy with the Infinity Kappa 60.9cs.

Pros: Tweeters can be made quieter or louder with a push of a button, tweeters can be adjusted in many ways even once installed, this component set has a impedance of 2ohm not 4, so they make better use of a amplifiers power, with a good Amplifier and Head Unit these components get to jump'n, Crossovers are not too big and are nice to look at so can install inside your vehicle.

Cons: Tweets are huge need to cut a big hole in door, wiring tweets was a real pain the allen wrench & screws are way to tiny, striped one screw on one of the tweets had to drill out to wire :( components are rated at 2ohms not the 4 that is listed, so your going to have to adjust them down either buy amplifier gain or though Head Unit to balance out the sound stage, woofers mid bass is a bit soft at low to mid levels of volume, at mid high to high levels they simply just rock plenty of every thing.


Scooby411 from Pikesville MD on 8/9/2012

Brought a pair of these speakers for a 2005 Misubishi Galant GTS WOW!!!!!!!!!!!!!!!!!!!!!!!. I love detail in music and these speakers are the very best i'v heard the highs that the sparate tweeter produced felt like i could shatter my car windows. The same tweeter also produced incredable mid rang detail as well i have no problems with these speakers what so ever. have resently brought another car 2010 Nissan Maxima with a Bose stereo system that sounds great but i'm still going to change out the speakes for two pairs of these infinity speakers cant wait to hear them in my new car.

Pros: better detail in sound highs mids and lows

Cons: none


Terry b. from pa on 5/31/2012

Bought these 3 months ago.have had no troubles or complaints other than that microscopic allen wrench.running them at 2ohm.have 250 Watts going through them. Best 360 I've ever spent on 2 pair of speakers.


Cons: Very large crossover networks, small Allen wrench strips or breaks.

I love my car again

Friction Jack from Southern Oregon on 5/23/2012

My 1998 Neon has a lot of road noise. It has always been a challenge to overcome it (even with Dynamat) yet these speakers are so clear, the road noise literally falls behind it and I can't hear it anymore. Upgrading to these speakers actually upgraded my whole car. I had a set of new Alpine SPS-610 up front, and after suffering with them for 3 months, one died and I new I wanted something better. The Infinity Kappas were a great choice. They deliver the full range of music with clarity - way beyond my volume tolerance. They are powered by an Infinity Kappa Five, along with a set of 6x9 Alpines in the rear. The Infinity Kappas make the Alpines sound like there's a pillow on them. Upgrading those next. For first generation Dodge/Plymouth Neon owners: The giant tweeters (with the cup that allows you to aim them) slipped right into the factory location. Couldn't have been easier. In fact I had a harder time finding a home for the crossovers. Woofers needed extra 1/2" spacing to clear the windows.

Pros: Clarity, quality of build, materials.

Cons: The tweeters' speaker wire set screws are too tiny. The allen wrench is so tiny and thin that it's fragile, yet there is room for a much larger head on the set screw. The contact between the screw and wrench is so fragile that you simply can't torque the tiny screw enough to create a trustworthy connection. I snapped one end of the wrench opening the screw (the factory has them in there TIGHT!) and stripped the other end tightening them down.

Infinity Kappa 60.9cs

Anonymous from catskill,ny on 5/11/2012

GREAT SPEAKER'S, make sure their hooked up to an amp and you will fall in love with these.

Pros: everything

Cons: nothing


Chris from Burkburnett, TX on 4/22/2012

I got these as a Christmas present from my parents. I had done some research and have always loved Infinity products, so I knew I wanted these. They did not let down at all! Very crisp clean highs from the tweeters, and the woofers handle a pretty good amount of bass. The only issue I had with these was installation, but not because of the product, it was my car. The tweeters are a bit of a pain to install in an 08 Civic. Other than that, no complaints. I love these!

Pros: Good bass, Clean crisp highs.

Cons: NONE

Love this speakerS

TobeMac from on 4/11/2012

I have these speakers in the rear doors of my car. They sound AWESOME!!! The sound is very crisp and clear. I have my radio set @ 60 htz for bass and these speakers handles it beautifuly. In turn it creates a wonderful mid range sound with some bass. They handle alot of power.

Pros: Beautiful sounding speakers, very crisp and clear, awesome mid range and good bass

Cons: the tweeters are by far the biggest ones I HAVE EVER SEEN, THERE HUGE!!

Kappa Component

The One from Houston TX on 1/27/2012

I just had New Kappa Component installed into my 2011 Tundra I went into Car Toys just wanting to get my amps put on my factory system and was not expecting to by any speakers, but the sales clerk insisted that I at least consider replacing the speakers, so I listened to a couple of different sets and said screw it give me a pair of course we all know what comes next the up grade sell and I stood around for the next comparison demo "people the days" is what went through my head he told my that my truck came with six speakers and I would need a component set for it to "sound proper" I was getting annoyed so I gave him a number that I was willing to spend and told him just make it sound good... So he said my truck deserved these and I should spend the extra "$240.00 a set out his dam mind" so I told him to find something... Well I returned the next day to pick up my truck to find the best sounding truck I have ever heard and could not beleive the clarity, it went perfect with my bass... Well along comes the bill it was FIVE HUNDRED DOLLARS over what I told him I was willing to spend and was ready to tell him to remove the when he brought out the adjusted price "Manager hook up" which was $25 less then I was willing to spend.. He said he owns a Tundra and he replaced his old series with the new ones and was awed how great they sounded so he said the hook up wasn't for me like he told me at the start "MY TRUCK DESERVED THEM" Lol boy was he right SO ALL IN ALL SPEND THE MONEY

Pros: Greatest Sound I've ever heard and the sound travel's with stock system I didn't have to replace my factory radio to get better sound major plus...

Cons: I have non but from all the reviews I've read installing them can be a challenge so if you're not good with things like that have a pro do it find a place where u buy them they will install them like Best Buy I have non but from all the reviews

Good Speakers

NetMatrix from Illinois on 1/26/2012

2002 Mitsubishi Eclipse Spyder
Crutchfield Customer Review (What's this?)

These are great sounding speakers, and they are worth the purchase.

Pros: The sound great, and fairly easy to install.

Cons: With my Eclipse I have a factory amp, and you have to install an after market amp to use the cross over correctly. The price is also a little high on these as well, and gets expensive to replacy the factory speakers.

Infinity Kappa Component System

Robert from Lee's Summit, MO on 1/26/2012

2003 Chevrolet Silverado 1500
Crutchfield Customer Review (What's this?)

The Speakers sound very good and were easy to install. The only problem I had with the install was the "cheesy" little Allen Wrench that was sent out for the speaker hook-ups on the Tweeters. The Allen Wrench is of poor quality and will not fit the lugs on the Tweeters! Normally this would not be a problem, but the lugs are so small you would have to have the equivalent to a Precission set of Allens to fit it!

Pros: Very good sound reproduction with nice crisp and clear sound throughout the decibel range. Very good for the price!

Cons: Poor quality hook-ups on the tweeters (too small).

Great speakers

CaseuC from Noru Dakota on 1/24/2012

1995 Pontiac Firebird
Crutchfield Customer Review (What's this?)

At first I was not happy at all with these speakers. I purchased three sets and hooked then up front mid and back of my 1995 Pontiac trans am with three kenwood 350w amps pushing it. Speakers sounded very weak with no mid or bass. Just last night I got the time to set up the filters and sensitivitys correctly. Made a world of difference, speakers are lively and sound great. Capable of all ranges, even some decent bump when hooked up as a sub. I love my infinities now.

Pros: Great sound, versatile.

Cons: Pricey if you want to redo all your speakers.

Clean Crisp Sound

MichaelB from Rowlett, TX on 9/8/2011

I installed these speakers in the front doors of my 2001 Yukon with very little modifications. Combined with a pr. of Kappa 62.9i in the rear doors and a Polk Audio db840DVC subwoofer mounted in the factory sub box, this combination sounds incredible. I did set the Kappa's at the -2db setting but they are still very clean and crisp. You can truly appreciate your music when you can hear and distinguish each instrument. The subwoofer has plenty of bass without rattling the vehicle but I do recommend removing the factory carpet jute from the sub box and adding 4-6 oz of polyfil. You will be very happy with this combination.



Infinity Speakers Will NOT disappoint

Zane from Mattoon, IL on 8/2/2011

There is a reason why Infinity is known for their loud speakers; especially the Kappa Series. Just like all other Infinity products, these are amazing. I am currentyl running them off my Infinity Kappa Four amp. Pros: Stunning clarity. Loud AND clear. Good bass (unlike others say) and crisp highs. Looks great. Installation accessories. Cons: Gotta be honest, the magnet and tweeters are rather large, so make sure you have room. I did not, but I wanted them so bad that I made modifications anyway.



No good with amp power

Matt K from Albuquerque, NM on 7/27/2011

I hooked these up for front stage in conjuction with a matching set of Kappa 62.9i 2-ways for rear fill to my old school Soundstream Continuum amp, along with an old school round Kicker Solobaric 12" sub in a .90 cubic foot sealed box, and a Kenwood Excelon CD receiver. Everything sounded great at first...but I noticed that the sound was out of balance, and discovered one of the mid-bass speakers in my components was completely dead after only 1 1/2 month! I sent it back in for a replacement, and ran a pair of cheap Pioneer speakers in place of the Kappa front components in the meantime. I reinstalled the Kappa components again last week (after 6 months with the Pioneers) and found one of the rear Kappa 2-ways was blown too. I replaced it, and had one week of good sound. Now one of the front components is distorting & good. I switched out amps to be certain it wasn't an amp issue. Checked impedence on all wiring, everything checked out good, except the Kappa 60.9cs mid-bass...blown voice coil.



Install pain = worth it

Josh from Des Moines, IA on 4/21/2011

First - the other reviewers are right about install difficulties. The tweeters are massive and I doubt they will fit in most factory tweeter pods - they don't fit in a 2000 Subaru Outback's, that's for sure. I had to cut holes in the door panels, AND use spacers because there wasn't enough depth behind said panel. Also had to use an adapter for the woofer due to different bolt pattern (and needed a spacer there as well, to clear the window glass when it's down). And yes, the allen key for the tweeter is impossibly tiny. You will feel a deep, dark sense of despair if you think you've lost it. And there was no good place for the crossovers (had to put them in the door cargo pockets, heh), although that's true of most component sets. In all fairness, Crutchfield did warn me they weren't a fit. They were correct, there's no way these things would have ever gone in without the modifications I made. If you get them installed though.... wow. There's just no substitute for Infinity Kappas. I'm hearing new notes in nearly every song I listen to. On one particularly good recording the saxophone is so clear I swear I can feel the instrument's reed vibrating. I was skeptical about them moving away from the CMMD material in the previous Kappas (I loved my old CMMD Kappas and would have kept them, but they were 5x7's and wouldn't fit in anything but a Ford or Mazda) but they don't seem to have lost anything.



Great audio quality

DeltaB from OKC, OK on 3/5/2011

2003 Sorento. Replaced factory audio with AVQ-P4300DVD and these Kappa series, and all I can say is the difference is night and day. Reworked the opening of the factory tweeter to insert Kappa tweeter from rear. Very little effort in installation resulted in a very fine sounding rig. I used to work for Altec-Lansing Professional here in OKC, and know what pro audio can and does sound like, and these Kappa's are truly a fine buy. Many, at first, feel the tweeters are too bright, but when properly EQ'ed they are truly linear and reproduce sound with clarity and definition. Properly positioned, they create an incredible soundstage rivaling my home theater. I am well pleased!



Infinity Kappa 60.9cs

rtw from Salt Lake on 2/1/2011

This is an awesome set of speakers at a reasonable price. Installed them in the jump seat area of a Toyota Tacoma. The high and mids are perfectly clear and separated. The bottom is quite solid, so, with a power amp, I barely notice there is no sub.



Really Nice

DurangoJoe from Charlotte, NC on 1/28/2011

2001 Dodge Durango
Crutchfield Customer Review (What's this?)

I replaced a year old pair of Infinity 6020cs with these 60.9cs speakers in my Dodge Durango. I was not expecting a major upgrade in sound, but since they were newer and the tweeter wasn't going to fit in the stock tweeter location in back, I put these in front and moved the 6020's to the back seat. How wrong was I? These are head and shoulders better. Much more solid and lifelike sounding. The only con I can think of of these is that the tweeter is a bit on the large side. It probably won't fit in the factory location in most cars that have a factory tweeter location. But perhaps that is part of why they sound so nice. Anyway, if you are considering these vs. cheaper Infinity speakers, I say these are definitely the way to go. you'll notice the difference.




RAY.F from SOUTHBRIDGE,MA on 12/5/2010

I HAVE BEEN A INFINITY KAPPA COMP USER SINCE 2000. I can say these comp sets are the best I have heard and owned.I have heard everything from boston to jl audio, for the price the sq quality you get at 90wrms is outstanding.I run a alpine pdx-4.150 ( 4 x 150wrms) at norm setting for gain and wow the clairity is just amazing, mid bass in right where it should be very responsive and you feel like your right next to the drum beats that accure,the tweeters are a bit piercy but I think its because I have them mounted in my stock mirror location, which is why they are piercy I think, I plan to move them to my kick panels to solve this problem, but you hear things you wouldn't hear from any other speaker set. The power handling is well over the rated power recommondations ( 90wrms - 270w peak ). I play my highs at 125hz front and 60hz rear and 3/4 volume at 150wrms is definity no problem. So dont hesitate to pick these up, you will not be disappionted unless you hooked them up wrong then its your bad. I hope this help people to buy this product without hesitation. No I dont work for an infinity dealer or company, just and average guy buying good quality product from a quality company



2 Pairs in a 300zx

alexander1225 from Florida on 11/4/2010

These speakers are the best i have heard. They blow most anything i have ever heard. I have them hooked up to a Kappa 5 amp with a Kappa 10 sub in a sealed box and let me tell you this is the best combination. They deliver crisp and very clear highs, solid and "just right" mids and some bass(that's why i have a sub though). I do recommend you use a subwoofer in most cases and a amp no matter what with these. The highs will over power the bass all day long. Comes with many ways to mount the tweeters and poor instructions, but that's expected with such a straightforward project. Again some of the best speakers money will buy you today.



''Big Sound''!!

Steve from Shepherdsville,Ky on 11/2/2010

Crutchfield Customer Review (What's this?)

I am well pleased with the these Infinity Kappa's component speakers I purchased from Crutchfield!! I hear things in music that I have never noticed before. I am very satisfied with the service that was provided to me and the tech support that I received as well. Crutchfield is very helpful with ''All'' the products I purchased and never tried to sell me something that I didn't need!!! Great place to shopped!!



Installation Notes

Womakin from Charleston, WV on 9/28/2010

Chose two Infinity 60.9cs 2-way component systems sets with a pair in the front doors and a woofer in the rear door and its tweeter in the very back pillars of a 2002 Yukon XL. The Infinity's have a very high Sensitivity (93 db@1 watt@1meter), therefore they are very miserly when it comes to power. The rule of thumb is every 3 db increase in volume requires a doubling of wattage so they are way ahead of say a speaker with a sensitivity of say 87. They are crystal clear and indeed I hear stuff in the music I don't hear in other systems. The tweeters come with like (5) ways to mount them and the one that I love and worked for me was a threaded cylinder that has a mating basket that fits in it.. The cylinder permits varying the depth of the mount (out or into the plane) by inserting homemade spacers and the basket allows aiming the tweeter at what looks like up to 45 degrees! The tweeters I replaced up front are now directed right toward the front passengers, very powerful stuff. The speakers come with their associated passive crossovers. These things are clunky at best and I ended up putting a set under each rear seat. They could have been made with the corresponding components (for example the coil) being put with its driver (woofer) as an assembly which I would have liked since I could have freed up space for amps etc.. Regardless, they work very well as evidenced by well balanced sound.



More than I asked for

Anonymous from Tampa on 9/20/2010

Crutchfield Customer Review (What's this?)

I have a 1997 Chevy extended cab pickup and these are in the doors. I had to make a hole in the door panel for the tweeters because they are about 1.5 inches in diameter and doidn't fit in the factory location. I have them hooked up to a 60 watt x 4 channel JL amp in bridged mode and they sound amazing. The tweeters actually hurt my ears from the volume and clarity. And they a clear at loud volumes. I listen to heavy metal, and these things do the music justice. People roll their windows up when they have to sit next to me at an intersection now. They are a little pricy, but I considered that I probably would not have to buy another set of door speakers for a very long time so I had no issues with getting them. If you are serious about music and want your tuens to sound good, loud, and crystal clear, fork out the extra cash and get these. You will not be disappointed at all.



Just Awesome

Jim from Fort Collins on 9/19/2010

I made use of the local store to pick out my speakers. So I thought these speakers were the best, before I knew they came with tweeters. Soon as local guys started talking about 100++++ per speaker install fee, here I am. (also remember they will charge you more if you want new wiring too!!) I listen to metal to techno. The speakers paired with my subwoofer.. wow.. clear... I mean, clear. I'm a complete audiophile, I own two sets of klipse ear buds audiophile. When I say these are clear they are clear. Though I would never run this without a sub. What really impressed me was the crossovers had a button. Oh great I'm going to hit that when I toss them inside a panel. Nope, they unscrew and are easily tucked inside. That is smart engineering.



Infinity Kappa 60.9cs

Paul from Baton Rouge on 8/31/2010

This sound great. I have them in my Dodge Ram.



great infinity components.

Justin from wisconsin on 7/25/2010

the tweeters are big. very big. I have a 2009 pontiac g6 and the tweeters had no chance of fitting in the factory locations. Fortunately I surfaced mounted them and now the tweeters point right at my face, which is awesome. the bolt pattern on the woofers is not standard but i was able to get 3 screws to catch the sheet metal and they're solid. I have these kappas powered by a kenwood x600f, 600Wx4 amp. perfect combo, the kappas get all the 2ohm power they need, and the amp is running ice cold because it has so much room to spare. I bought this amps brother for the sub, x1200m and alpine type x 12" Unfortunately the mono amp is an RMA so for now I am giving these components everything down to 50hz and the bass is tight. very loud, extremely clear, and great imaging. can't go wrong with kappa.



Infinity Kappa 60.9cs

Anonymous from Hatfield PA on 6/3/2010

2004 Jeep Grand Cherokee
Crutchfield Customer Review (What's this?)

I have always been a fan of the Kappas. It didn't get 5 stars because of the insanely small allen key used to connect the tweeters. Besides that excellent product. Great Sound.



why Infinity, why?

chris9510 from St Louis on 5/4/2010

2007 GMC Yukon XL
Crutchfield Customer Review (What's this?)

In my last truck, I owned the infinity Kappa 6.5 component system. With the tweeters on -6db, the speakers sounded good. Easy to install in factory locations, even tweeters were nice and small. Why go and change a good thing? Too bad I didn't notice how big those tweeters were in this model. Look at the picture with all the components together, those things are huge! In my new car I could have fit last year's model tweeters in the factory location, not this year. For instance, to flush mount you need to cut at least a 2.5" diameter hole, with 2.5" depth needed. Comes with the smallest allen wrench known to man. Use the allen wrench to loosen the set screws for the tweets, but don't try to use any speaker wire over 18 ga, or it won't fit. I misplaced the allen wrench 3 times, it is so small it's hard to see when you put it down. I freaked and cried once. And what's up with those dongles hanging off the mids? Come on man, don't need those rattling around in my door. They used aluminum set screws to boot, they like to strip, ridiculous. Beyond the installation nightmare, it sounds good. Got the tweets on -6db again, way too bright with them full on. It was such a pain to install I'm leaving them in. Already surface mounted the tweets anyway, not taking those out. On second thought, I should take the tweets out and mount LCD screens behind those huge holes.



Infinity Kappa 60.9cs

moses from lawton ok on 2/17/2010

2010 Chevrolet Silverado
Crutchfield Customer Review (What's this?)

great speakers, the best these thing make your music sound like your in a studio.



All-around all-star

Carlson from Richfield, MN on 9/12/2009

These Kappa components are phenomenal all around performers. They have a hefty midrange and really do a great job of handling bass. I can really see where Infinity's research has paid off on their drivers; very little distortion. An amp is pretty much a necessity to get your money worth from any good speaker set. High quality components require high power to drive them and to achieve balanced sound. I have 400W RMS/pair and they love it. The tweeters are powerful, but I keep them set at the flat level on the crossover, and a slight tick down on the treble on my headunit. Turning the crossover to -6db took away too much in my opinion. With a good amp like I have on them, the sound is very balanced. Those complaining of the highs being too harsh, well... that's what you get when you run these speakers off headunit power; there just isn't enough juice to drive the woofers to keep up with the tweeters and you get a hallow sounding speaker with bright, tingy highs. Invest in a good amp. I run a component set in my front doors, and 2 way kappas in the rear doors and rear deck. Everyone that's been my car (Altima) is blown away at the sound and shocked I don't have a sealed 10" in the trunk. The amplifier I am using is an Orion HCCA 275G4 supplying 200 watts RMS/speaker crossed over at 50hz.



ears ringing

honda element from fullerton, CA on 6/30/2009

the speakers are an intense improvement from the Alpine R 6.5 coaxials i had in my door before but one thing you should be aware of, the the tweeters are brutally over-bearing. which are great for old-school hip hop but playing rock or anything that requires some good mid range. eh.



Infinity Kappa 60.9cs

rnd from Boston, MA on 4/23/2009

Ok, I'm actually pretty impressed. I installed these in a noisy old convertible sportscar in the doors (with added soundproofing / matting). My head unit only has simple treble & bass controls (no crossover centering etc.) and I'm running them through a 40wx2 rms amp. As has been mentioned, the tweeters are very bright. I pressed the -6db button right off the bat and they can still be shrill at times. The midrange and bass is surprisingly good. The lows are good enough to vibrate my body! The sound doesn't take over a hi-fi home system, but I'm more than pleased with it for car audio. Bonus - the speaker grills don't look like they belong in a spaceship.



Infinity Kappa 60.9cs

Clayton from portland, or on 3/18/2009

I installed these about three months ago and frankly I'm a little dissapointed with them. First off, This is the second pair of kappa's that I've owned and it seams that when infinity switch to woven glass for their mids and changed the tweeter they took a step back in sound quality. I'm currently running 100watts rmsX 2 channels@ 2ohm, They are mounted in the stock location (dynomated doors inner and outer,) with Pioneer head unit (mid level.) These speakers are not well matched and are really unbalanced with tweeters overpowering the mids ( if you have a top of the line head unit like an alpine 9887 you can overcome all of the tweeters shortcommings). I've noticed that i have to really dial back the gain or the tweeters will start to distort and sound terrible. The mid bass seems to be able to handle allot of power with out distorting. When I set the high pass at 125 hz there is 0 distortion but mids seem to lack a little bit in response and detail. I have the tweeters set at -6db and they're still very harsh. Currently there mounted 1.5 inchs above the mids. Over all this isn't a bad component set, but for the price There are better options out there.




Kevin from Eastern NC on 3/10/2009

I purchased these components for my front doors and their 2-way, full range equal for my rear doors in my Dakota Quad Cab. I do have these amped up using a MTX X704 4-channel amp,running a 2ohm load.So ,it is a total of 105 watts/channel available to these Kappas!! Sound is amazing!! Highs are unreal,mid-bass is super,lows are good(considering it is a 6 1/2"). I will confess,I do have a 10" sub (MTX) in the back as well. Therefore,I am using these Kappas for mids and highs. If you are wondering, yes,they will run you out of the truck!!! As a stand-alone set-up (no sub) they are great. You will need more watts than most head units supply,an Amp is strongly recommended. The only downside to this story is the tweeter,it was too thick to do a flush mount,therefore had to settle for a top mount.Make sure you have plenty of depth to do a flush mount,and room for the housing too.



06 Silverado ext cab

Travis from Oklahoma City, OK on 11/15/2008

2006 Chevrolet Silverado 1500
Crutchfield Customer Review (What's this?)

I installed these w/ an Alpine 9886 receiver--18Wx4 RMS. They're 2 ohms, so use the available power more efficiently. The bass isn't bad, the highs are clear. I may add a sub (or two) for punchier, more solid bass, but these definitely suffice for now (my music varies from Randy Travis to Megadeth). The install wasn't the easiest, but that's me being meticulous... I mounted the woofers and tweeters on the door panels (factory was tweeters on the panels, woofers in the doors), and crossovers inside the doors, using a hole originally used for a door panel fastener (covered by the dash when the door's closed). I cut the door panel a bit for the tweeter mount and covered the entire area with dynamat (to cover leftover factory holes as well as for matting benefits). There really was no good place for the crossovers...creativity is key (my experience with any crossover install). Also, replacing factory components, I only used the woofer's lead; the tweeter's lead is now just hanging in the door. Somehow the separate highs/lows aren't filtered when the tweeters' wires aren't's like Positraction--it just works. Overall, I am thoroughly pleased with the sound. I originally planned to add an amp to power them since 18x4 from the head unit doesn't seem like a lot. However, I don't know I need it; the 2 ohm rating really helps use the internal amp most effectively. I recommend these speakers, especially if you want component-quality sound powered by just your head unit.




Rodney from Watsonville, CA on 9/13/2008

2000 Chevrolet Impala
Crutchfield Customer Review (What's this?)

I replaced my Alpine Type-S SPS171A components with the 60.9's. Big time difference. These speakers rock. You will know what I mean when you turn the volume knob clockwise.




David from San Jose, CA on 9/3/2008

2000 Dodge Dakota
Crutchfield Customer Review (What's this?)

2000 Dakota. 2 stars for the terrible literature. A few micro diagrams with ZERO text explanation for installation instruction. A few bags of screws went unused. Mostly for the assumed optional install methods. Woofers looked easy enough to install but ended up the screws I did use I had to screw in and then cut off the back side. Tweeters require custom cutting or creative strapping to panel (i cut). Regarding sound quality. Seems the highs are over ambitious (but overall OK), but I returned my receiver for different reasons of lameness. Kenwood eXcelon KDC-X592 is pure unnecessary complication of interface. We will see how it goes off a new receiver.




Dennis from Bedford Hts OH on 8/26/2008

Crutchfield Customer Review (What's this?)

They are great. Very clear, you can hear every member of the band. Sounds good with the windows down while driving on the freeway. But I will need more power.



Infinity Kappa 60.9cs

Dewayne from Atlanta on 6/16/2008

I had the infinity 2 way reference series in my car and I upgraded to these. These speakers are amazing. They are louder, clearer, and give you more sound detail. I can not imphasize how clear and cripy they are. They sounded better right out the box and I haven't even broken them in yet. Even songs you may not care about sound good through these You will need power though, I am running them off a 2 channel, 2ohm 200 watt RMS per channel Sony amp. (One thing to note, the tweeters are huge and they may not fit your factory location if you have one.)




Hands-on research

Features and Specs

Speaker Size
Design 2-way
Tweeter Design Dome
Impedance (Ohms) 2
Tweeter Composition UHF Textile
Woofer Composition Woven-glass fiber
Woofer Surround Hi-roll rubber
Parts Warranty 3 Years
Labor Warranty 3 Years
Sensitivity (1W at 1 meter) N/A
Sensitivity at 2.83 volts 93
Frequency Response 45 - 35k Hz
Minimum RMS Wattage 2
Maximum RMS Wattage 90
Peak Power Handling (Watts) 270
Top-mount Depth (Inches) 2 1/2
Bottom-mount Depth (Inches) N/A
Cutout Diameter or Length (inches) 5 1/8

Product Research


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

Woven Glass Fiber Woofer Cones: This woven-glass-fiber material is very light and extremely stiff, minimizing cone flex. This results in very low distortion and improved clarity. The woofers have set screw input terminals that will accept up to 10 gauge bare wire.

Woofer Size: This component set is marketed as having 6-1/2" woofers; they will fit in standard 6-1/2" speaker openings, but do not use the standard 6-1/2" speaker bolt pattern. In order to install them in standard 6-1/2" speaker openings you must drill new screw holes. If new holes are drilled in the mounting surface of the car, no bracket need be used. If drilling in the car is not an option, the flange on the included metal bracket is wide enough to accommodate new holes being drilled; either in a standard 6-1/2" three hole pattern or a Ford non-symmetric four hole pattern. When using the bracket the depth becomes 2.279" and the mounting height becomes 0.651".

Edge Driven UHF Dome Tweeters: Each speaker has an Edge-driven UHF dome tweeter. The benefit is increased power handling and reduced distortion at high output. This technology also allows for better integration with the mid/woofer. The tweeter wire terminals are set screws, tightened using the included 1mm Allen wrench; they accept bare wire up to 14 gauge.

High-Output Design: The high output 2-ohm voice coil design compensates for the high in-line resistance of small gauge factory wiring and extracts every watt from factory receivers, increasing overall system output and efficiency (relative to 4 ohm speakers). The speakers also benefit from increased power when you upgrade the wire and add aftermarket amplifiers, designed to power a 2-ohm load.

Crossovers: Kappa speakers include computer-optimized, voice-matched crossovers, using audiophile quality air core inductors and polypropylene capacitors. The crossover slope is 18 dB/octave. Each crossover has a tweeter output switch; choose between flat and -6dB.

Crossover Connections: Each crossover has set screw input and output terminals that will accept up to 10 gauge bare wire.

Crossover Dimensions:

  • Length: 4-3/4"
  • Width: 3-1/2"
  • Height: 1-3/8"

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): Once the Starfish bracket is trimmed, it is screwed to the mounting surface behind the grille panel. Then, the tweeter is inserted into the bracket and locked into place.
    • Flush Mount (behind grille panel): Once the Starfish bracket is trimmed, it is dropped into the cutout in the mounting surface behind the grille panel. Then, the tweeter is inserted into the bracket and locked into place.
    • Bottom Mount (to grille panel): Once the Starfish bracket is trimmed, it is secured to the underside of the grille panel. The tweeter must be inserted into the bracket and locked into place before the bracket is mounted.
    • Flush Mount (in-dash location): Once the Starfish bracket is trimmed, it is dropped into the cutout in the dash. Then, the tweeter is inserted into the bracket and locked into place.

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 1.316" 0.693" 1.328" 0.624" N/A 0.624"
Depth 0.552" (screw depth) 1.311" 0.552" (screw depth) 0.692" 1.370" 0.692"
Frame Diameter 2.216" 2.855" 2.221" 2.221" 2.221" 2.221"
Cutout Diameter N/A 2.360" N/A 2.221" N/A 2.221"

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 verify what’s in the box, 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.

Staff Reviews

Product reviews from the Crutchfield Labs

Video: Infinity Kappa car speakers
by Robert Ferency-Viars

Infinity Kappa is Infinity's high-performance line of car speakers. They're designed and built to give you excellent sound, especially in an amplified system.

What are the Labs?