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Infinity Kappa 680.9cs

6" x 8" 2-way Kappa Series Component System (also mounts in most 5" x 7" location, KAPPA680.9CS)

Discontinued
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This item has been discontinued

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Kappa: The Essence of Infinity

This Infinity Kappa 682.9cf is the essence and trademark of Infinity car audio. With all the high-end engineering and technology that goes into each Kappa speaker, you will sure that you are receiving only the highest quality components. Made with a woven glass fiber woofer cone, which contributes to low cone flex, low distortion, and enhanced acoustic clarity. Due to the increased power handling of the Kappa series, the Kappa 682.9cf feature edge-driven MMD dome tweeters that allow for a seamless sonic integration between the tweeter and the mid-woofer. Using the latest in loudspeaker engineering, each of the crossovers has computer optimized voice-matched outboard passive crossovers for flawless performance.

Unipivot: Staging Made Easy

The Infinity 682.9cf features a patented Unipivot tweeter design that ensures proper imaging when the speakers are installed. With the tweeter capable of being moved, it is positional and rotational even after the final screw secures the speaker in the door. Since most speakers are installed low in the door, the Unipivot design brings the soundstage up to the listener for more accurate and enjoyable experience. Each of the Kappa coaxial speakers, such as the Infinity Kappa 682.9cf feature adjustable tweeter level control. This switch will adjust the tweeters output by 3 dB. That simple tuning can make all the difference in your system and it ensures that your Kappa speakers will deliver exactly the sound that you are looking for.

True Four Ohm Technology

The engineers at Infinity have developed a speaker that works for all applications. The True Four Ohm Technology used in these speakers make it perfect for running directly of a headunit or with an aftermarket headunit and amplifier. All of the speakers in the Infinity Reference line feature a 2 ohm voice coil. However, when you factor in the small OEM speaker wire of most vehicles and the heating in the voice coil during use, the impedance actually seen by the amplifier will increase. Infinity has adjusted the speaker to be safely connected to any headunit.

General Features:

  • 6" x 8" (5" x 7") Kappa Series 2-way Component Speakers System
  • Power Handling:
    • Peak: 540 watts per set / 270 watts each side
    • RMS: 180 watts per set / 90 watts each side
  • Woven glass fiber cone woofer
  • Rubber surround
  • Edge driven UHF dome tweeter
  • Unipivot patented rotating tweeter allows tweeter to be directed at the listener's location
  • Direct connect computer-optimized, voice-matched outboard passive crossover for superb detail and accuracy
  • Tweeter level adjustment on passive crossover to add or subtract 3 dB output
  • 2 ohms impedance
  • Top-mount depth: 2-1/2"
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty

Priced Per Complete Component System: 2 midwoofers, 2 tweeters and 2 crossover networks

Product History:

Infinity 680.9cs thumbnail
(newest, current model)
Infinity 680.7CS thumbnail
(previous model, replaced by Infinity Kappa 680.9cs)

Speaker Specifications

Series
This is the manufacturer product line of speakers.
Priced Per
Car Speakers are typically sold in pairs so you will receive 2 speakers for each speaker purchase on speakers marked "Priced Per Pair". If a speaker is marked "Priced Per Each" then the speaker is sold individually and each purchase you make will result in 1 speaker. High-powered tweeters, midrange and full-range pro audio for car speakers are typically sold per each speaker.
Speaker Size
Refers to the size of the speaker measured in inches. Every vehicle has standard application sizes. Please use our vehicle fitment guide for your vehicle's specific speaker sizes if you do not know them.
6" x 8" (also mounts in most 5" x 7" locations)
Design
The number of individual drivers in a car speaker. Speakers with 2 drivers are known as a 2-way, and 3 drivers are known as a 3-way. Component systems are often referred to as "separates" because the tweeter is not attached to the midwoofer (main speaker driver) and mounts separately in a location such as a door post. Component systems typically come with an external crossover so you can easily adjust the high and low frequencies sent to both the midwoofer and the tweeter. Center channel speakers are great for those looking to have surround sound in their vehicle.
2-way Component System
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.
Dome
Tweeter Size
Refers to the size of the tweeter. Typically, smaller tweeters produces less output with higher frequency response.
Tweeter Composition
Materials such as polypropylene, silk, cloth, and paper are the most common, where as many more recent tweeters are now manufactured with composites such as Aluminum, Titanium, Mylar, and other materials.

PEI is an acronym for "Polyetherimide" which is an amorphous, amber transparent, high-performance thermoplastic.

UHF
Woofer Composition
Lightweight woofer cone materials are essential for efficient operation. Poly cones produce exceptional sound and are sturdy against various changes in temperature. Paper cones are very efficient, and when treated for moisture resistance, will perform at a high level. Poly refers to polypropylene, which is thermoplastic or fibers that are polymers of propylene. IMPP refers to injection molded polypropylene, a commonly used process and material in speakers.
Woven Glass Fiber
Woofer Surround
A speakers surround is part of the suspension system. The surround protects the cone and prevents it from being displaced as it flexes out from the basket. It is usually made of a durable material like treated foam or rubber in order to withstand the strenuous job of producing bass frequencies.
Rubber
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.
270 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.
90 watts
Sensitivity
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).
40 - 25000 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
Shallow Mount Installation
This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.

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.
2-1/2"
Bottom-Mount Depth
The depth when installed from the bottom of the mounting surface. Measured from the bottom of the speaker's magnet to the top of the mounting holes on the rim of the speaker.
2-7/8"
Cutout Dimensions
Refers to the dimensions of the hole, measured in inches, required to contain the speaker.
Cutout Dimensions
Refers to the dimensions of the hole, measured in inches or millimeters, required to contain the speaker.
7-1/8" x 4-5/8" 
Speaker Grilles
A grating or screen of metal or plastic bars or wires, mounted in front of a speaker as protection. If yes, the speakers will include matching speaker grilles. If no, there are no grilles included.

Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
95%
4 Star
0%
3 Star
5%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.7
Value
4.9
Features
4.8
Design
4.4
Usability
4.5
jjandros

Raleigh

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Durability
Value
Features
Design
Usability
terrible service

February 15, 2012

If you are going to under power these speakers then you should be fine. However, my personal experience with this product has been pretty awful. I've had these speakers running at 90 watt rms each for about three weeks. I Never turn my volume all the way up and yet the tweeters already sound terrible. I usually listen to my radio at about 40-50% volume. The first week I had these speakers they worked outstanding. However, after about a week I started to here a baffle, I thought it might be a panel shaking so I forgot about it. I'm now at the three week mark after install and the tweeters sound awful. When a song with no bass comes on it's fine but when something like "Candy Shop" for example comes on it's distorted and crackles. I'm running 682.9cf in the rear and this has lasted 8 months so far (pretty nice product). My real beef has to be with the service. SAVE YOUR RECIEPT! There's always a fine print with warrantys and Infinity is no different. I ordered these componenets a few months ago and installed three weeks ago after getting the car all set up. I beleive that either the crossovers or the tweeters are bad (probably the filter on the crossover). However, Infinity doesn't do replacements, only the dealer you buy it from. And they can't sell replecement parts such as just the crossovers and tweeters. The 680.9cs has it's pros and cons. The woofer design is amazing and gives great mids! However, the crossover is huge and gives the tweeter too much low frequency which destroyed my tweeters. I recommend the 682.9cf by Infinity If your looking for good sound without a headache. It's cheaper, sound just as good and I havn't had a problem with them after 8 months of being amped to the RMS spec.

3 of 3 found this helpful

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Eddie Gtz

Laredo, TX

Overall
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Value
Features
Design
Usability
SO LOUD AND CLEAR!!! :-o

January 25, 2013

THESE COMPONENTS ARE AMAZING! I have 2 sets of these on a 2005 Lincoln LS, and may I say, WOW!! they are very power hungy, I have them hooked up to an Infinty kappa four amp.. I would highly recommend this product.. The tweeters are pretty big so mounting space may be an issue.. but overall these Speakers are Loud and Clear and the price is awesome.. thanks, Sonic!

1 of 1 found this helpful

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Alex T

west fargo, ND

Overall
Durability
Value
Features
Design
Usability
Great value!

January 10, 2013

Best sounding speakers for the price I already reviewed this earlier I am the Alex T from west fargo. These speakers still sound great. They work well even in extremely cold temperatures. They still have great mids and highs without a change in sound depending on the temp! With the lower impedance and high sensitivity these get loud with little power! I love these and if i had the money i would install them for my rear door speakers! The bass response is still limited but they are good down to about 80hz. Im sure these would be much more bassy in a rear deck of a car instead of doors. As i mentioned earlier tweeters are hard to install but the wires haven't fallen out yet so the tiny screws seem to work.

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Alex T

West Fargo, ND

Overall
Durability
Value
Features
Design
Usability
Crisp clear good value

November 13, 2012

These are amazing for the price. i bought them when they were 180$ and that was a good deal. These are comparable to speakers in the 300-400$ range. If you plan on replacing factory speakers without installing a subwoofer might want to think otherwise. Bass response under 100hz is weak. Tweeters are large yes but if i can make them fit in my ford focus you can probably fit them in your car with a little modification. Only complaint is that the terminals on the tweeters have extremely tiny screws and its difficult to screw in the wires without striping the screws. Have them powered off of a pioneer head unit it works great. Definitely buy these are worth every penny

0 of 0 found this helpful

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brino

columbia,mo

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Value
Features
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Usability
kappa 5x7

September 30, 2012

Speakers are by far the best I have ever bought. I had the 68.2 kicker components an they do not stand a chance against the kappas. The only I would change is put a bigger set screw on twetters.

0 of 0 found this helpful

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kiwi

Canada

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Value
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Usability
Infinity Kappa 680.9cs SPEAKERS

July 23, 2012

I purchased these speaker for my Escape and puchaced a new Stereo
What great sound would recomened these speakers to any one who want great sound tweeters are great

0 of 0 found this helpful

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Hammered 150

Watsonville

Overall
Durability
Value
Features
Design
Usability
Crisp and clear

July 10, 2012

These speakers are crisp clean and clear even at high volume levels. Would recommend them to anyone who loves clean highs and clear
mids. Perfect fit in my 2009 f150. Would have preferred a bigger set screw on the tweeters.

0 of 0 found this helpful

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Mike

Michigan

Overall
Durability
Value
Features
Design
Usability
Best for the money

August 30, 2011

I have tried many different speakers over the years and for the money these are simply amazing. Great clarity, power handling, and value. The tweeters are a tad large compared to some and the crossover are a bit bulky but all hid in the door panels fine with some thought. I would get them again without hesitation. I have 5x7 components with 90 rms to each.

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Stephen

Santa Clarita, CA

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Durability
Value
Features
Design
Usability
still going strong

August 25, 2011

Great speakers, great seperations all around excellent sound. You must have at least the rated power to push them. Very happy with what i have. I wish they (infinity) will find a way to get more sound out but, so far its great. If and when they manage to do that, more sound that is, i will be the first ordering them. There is always the need for more clean mid bass, without having to modify your vehicle. You people in engineering, get to work!!

0 of 0 found this helpful

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Spungus X

NJ

Overall
Durability
Value
Features
Design
Usability
I'm impressed!

August 12, 2011

Wow, I'm very impressed! Sound nearly, if not just, as good as the Diamond Audio Hex's in my other car. Better bass than the Diamonds (both Miata's so this is a true apples to apples comparison). Keep in mind, this review is after hearing the speakers the first time after my purchase. They will sound better after they break in. The size of the tweeters made the install tricky; nothing a Dremel couldn't fix. For the money (I paid much less than $250), I don't think there is a better speaker available. As usual, Sonic is THE place to buy car audio. Thank you Sonic!

0 of 0 found this helpful

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VICTOR

LAS VEGAS, NV

Overall
Durability
Value
Features
Design
Usability
Good product

May 21, 2011

These speakers sound crystal clear. Really good highs.

0 of 0 found this helpful

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Jerms

escondido, california

Overall
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Value
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Usability
amazing!!!!

June 25, 2010

the tweeters on this are pretty amazing, if you mount them in the right spot the mids and highs match pin point. I'm very satisfied with this product. The best part is that they aren't even amped yet so I'm waiting to see how they sound after the upgrade.

0 of 0 found this helpful

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Gregory

Germantown, MD

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Value
Features
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Usability
Great Sound

June 18, 2010

Anyone who is in the market for some great speakers should try Infinity Kappa's. These are some of the best that you can buy. The sound is unbeliveable and you can find them at a very reasonable price. Sonic has them at a fair price and also with a good warranty.

0 of 0 found this helpful

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Wesley

League City, TX

Overall
Durability
Value
Features
Design
Usability
Big Tweeter

January 17, 2010

I returned them before installation because of the unsightly and awkwardly big tweeters. I know the component system is high quality because I had the coax version already installed. I sent these back and ordered the more conventional looking reference comp.'s instead. I am happy with the ref.'s appearance, however the mid bass doesn't hit as hard as the kappas.

0 of 0 found this helpful

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Brad

Iowa

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Value
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Usability
Kappa 680.9cs Components

November 15, 2009

Here's my system for a clearer picture of what you may experience...
Head unit: Pioneer DEH-P7600MP
Amp: Infinity Kappa 4-channel (111w x 4)

These speakers are definitely a step up from my last set of Kappas (which I believe I bought in '03, but don't remember the model number). The magnets are almost twice as heavy, which produces some great bass, and the highs from the separate tweeters is incredible. I heard frequencies I've never noticed before from songs I've heard a hundred times.

Overall, highly recommended after 6 months of use.

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Enox

Donna, TX

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Value
Features
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Usability
COMPONENT

September 15, 2009

i had the previous version of this component system, and can barely hear the difference. other than the great sound quality is that mine came with a messed up tweeter, it sounds very very harsh. i would still recommend them tho...

0 of 0 found this helpful

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Todd

Ridgewood, VA

Overall
Durability
Value
Features
Design
Usability
Best Speaker I've Had

February 2, 2009

These speakers are great! The first thing I have done to my car was change the head unit then speakers and my car is just as loud and crystal clear as I wanted them to be. I would definitely recommend these speakers to anyone who wants there system to blast as such a great price.

0 of 0 found this helpful

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lewog

brookfield, WI

Overall
Durability
Value
Features
Design
Usability
Crisp, Clear, and Loud

December 20, 2008

I needed some better midrange to keep up with my W7 at high volume levels. These speakers do the trick. There is no need whatsoever for anything more (expensive) then these. I'm running an Eclipse 50.4 to these and some reference 6x9's(rear). Overall this combination is more than enough.

0 of 0 found this helpful

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Sathish

India

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Value
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Infinity Kappa 680.9cs on my Ford fiesta

November 26, 2008

I got these speakers for my ford fiesta, powered them with the JBL 1004e. If you are looking for SQ these speakers are worth every penny spent. The clarity levels of these speakers are simply amazing.

0 of 0 found this helpful

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Ken

Canada

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Value
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Usability
Infinity Kappa 680.9cs's are Fabulous in my 2010 F-150 Supercrew

October 18, 2010

Bought 2 pairs, one set for the front doors and one for the back. Tagged them up with Pioneer GT300 Amps (one front/one Back) - the Pioneers take a high power input so I could keep the satellite radio and Ford Sync system - cut the original speaker lines and spliced into monster cables back to the amp. Enough room to push the amp out monster cables below the rear door wiring harness, through the rubber boot into the back doors but no such luck on the front doors (I ran the monster cables from the amp back up to the cut wires and used the Ford wiring to get power back to the front door speakers) . Front woofers need 1/4 inch(+) spacers, otherwise the power windows will lightly bump the speakers, back speakers are OK. Tweeters are swivel flush mounted at the top front front of the door panels - up by the vents on the front - drill with a circular bit from the back side of the panel so you are sure to have enough room to get the plastic nut on. Scosche power lines make it from battery straight back to the firewall through a pre-existing hole (pull the factory grommet plug and replace with the Scosche grommet hole cable protector) down into the passenger side wiring tray underneath the plastic Ford covers all the way back to behind the rear seat where I mounted my power distribution block to power both amps. Note: I stole switched power from the rear power window terminal (I don't have a power back window). This was a massive improvement over the factory Ford setup. Only downside was the size of the crossovers which I mounted on the outside of the door panels just below the armrests on the speaker covers. Just have to build my Pioneer TS-SW251 subwoofer speaker box and install my Kicker KX2 crossover and another Pioneer power AMP and I will be completely happy. I live in Canada but the Sonic folks were just great to deal with. Picked this up at their shop just across from Six Flags Magic Mountain.

0 of 2 found this helpful

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Accessory Tools and Products

Accessories added

NVX 25 ft. of True Spec 12 Gauge Speaker Wire

100% OFC wire with EnvyFlex metallic jacket insulates and protects against damage from extreme conditions.

Your Price $39.99

Streetwires 25 ft. of True Spec 12 Gauge Speaker Wire

You need speaker wire to connect your speakers!

Your Price $44.95

12-10 AWG Butt Connectors

These yellow butt connectors are ideal when connecting thicker speaker wire your new aftermarket speakers.

Your Price $6.99

12-10 AWG Yellow T-Tap Adapters

Allows for fast and easy splicing of wires by easily tapping into the cable.

Your Price $4.49

12-10 AWG Quick Disconnect Connectors

These yellow quick disconnect connectors make it easy to connect and disconnect speaker wire your to your new aftermarket speakers!

Your Price $6.99

NVX SDDK12 Door Kit

Eliminates speaker panel distortion and reduces door vibration, rattles and squeaks!

Your Price $49.99

Dynamat Xtreme Door Kit 10435

Enough sound dampening to cover most doors!

Your Price $69.95

Stinger Roadkill Door Kit

Use this to eliminate rattle from your doors!

Your Price $46.99

Car Stereo and Speaker Installation Tool Kit

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

Your Price $14.99

Xscorpion 9-Piece Nylon Plastic Pry and Chisel Tool Set

Easily removes dash/trims, door clips, panels and pins, rubber grommets and vehicle emblems.

Your Price $14.99

Xscorpion WDCR2 Window and Door Clip Remover

Removes and installs handle and window crank clips.

Your Price $6.99

3 in 1 Wire Quick Splice T-Tap and Butt Connector Crimper + Wire Cutter

Used for cutting copper and aluminum wires up to 8 gauge.

Your Price $21.99

NVX SDRLR1 Sound Dampening Rubber Roller

Install your Sound Dampening with ease! This heavy duty rubber roller is designed specifically to install your NVX products!

Your Price $7.99

Product Summary

Manufacturer

Model Number

680.9cs

UPC

050667110154

Weight

9.50lbs

Internal SKU

6809cs

Internal Product ID

13971

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 680.9cs

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