Previous page Infinity 680.9cs: main picture thumbnail Infinity 680.9cs: alternate picture thumbnail Infinity 680.9cs: alternate picture thumbnail Infinity 680.9cs: alternate picture thumbnail Infinity 680.9cs: alternate picture thumbnail Next page

Infinity Kappa 680.9cs

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

  • 4.9

(20 reviews)

Read 20 reviews

Write a review

The product on this page is discontinued.

Will this fit my car?

Select Vehicle >

Specials with this product

  • Free Ground Shipping to the 48 statesdetails

Why Shop Sonic?

Enter to Win Exclusive VIP Access to the BET Event Weekend!

Customer Testimonial

I recommend Sonic for any purchase. Excellent! Thanks a lot Tiffany.

- Sun K. from Korea

See more…

Buy with the NVX SDSK2 Sound Dampening Kit and Save $10.00!


Click here to buy the combo package!

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)

Sonic Electronix, Inc. can only ship Infinity products within the United States of America.

Speaker Specifications
Speaker Size 6" x 8" (also mounts in most 5" x 7" locations)
Design 2-way Component System
Tweeter Design Dome
Tweeter Composition UHF
Woofer Composition Woven Glass Fiber
Woofer Surround Rubber
Peak Power Handling 270 watts
RMS Power Handling 90 watts
Sensitivity 93 dB
Frequency Response 40 - 25000 Hz
Impedance (Per Voice Coil) 2 ohms
Top-Mount Depth 2-1/2"
Bottom-Mount Depth 2-7/8"
Cutout Dimensions 7-1/8" x 4-5/8" 
Warranty and Return Policy
Return Policy Standard Return Policy
Parts Warranty Duration 1 year
Labor Warranty Duration 1 year
Warranty Provider Manufacturer
Customer Review Summary for Infinity Kappa 680.9cs
Average Customer Rating is 4.9 out of 5 stars:
  • 4.9
based on 20 Reviews
Share your thoughts with others:
Rating Distribution:
5 star:
.
.
95%
4 star:
.
0%
3 star:
.
.
5%
2 star:
.
0%
1 star:
.
0%
what's this?
Average Attributes Rating:
Durability
  • 4.7
4.7
Value
  • 4.9
4.9
Features
  • 4.8
4.8
Design
  • 4.4
4.4
Usability
  • 4.5
4.5
what's this?
Quick Comparison:
Most Helpful Customer Reviews:
February 15, 2012 terrible service
3 of 3 people found the following review helpful:
Review by
jjandros from Raleigh
Overall
  • 3.0
Durability
  • 2.0
Value
  • 3.0
Features
  • 2.0
Design
  • 3.0
Usability
  • 3.0
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.
Help other customers find the most helpful reviews
Was this review helpful to you?
Report Abuse | Write a Review
Share on Facebook Share on Twitter Share on Delicious
January 25, 2013 SO LOUD AND CLEAR!!! :-o
1 of 1 people found the following review helpful:
Review by
Eddie Gtz from Laredo, TX
Overall
  • 5.0
Durability
  • 5.0
Value
  • 5.0
Features
  • 5.0
Design
  • 5.0
Usability
  • 4.0
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!
Help other customers find the most helpful reviews
Was this review helpful to you?
Report Abuse | Write a Review
Share on Facebook Share on Twitter Share on Delicious
January 10, 2013 Great value!
1 of 1 people found the following review helpful:
Review by
Alex T from west fargo, ND
Overall
  • 5.0
Durability
  • 5.0
Value
  • 5.0
Features
  • 5.0
Design
  • 4.0
Usability
  • 3.0
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.
Help other customers find the most helpful reviews
Was this review helpful to you?
Report Abuse | Write a Review
Share on Facebook Share on Twitter Share on Delicious
November 13, 2012 Crisp clear good value
Review by
Alex T from West Fargo, ND
Overall
  • 5.0
Durability
  • 5.0
Value
  • 5.0
Features
  • 5.0
Design
  • 5.0
Usability
  • 3.0
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
Help other customers find the most helpful reviews
Was this review helpful to you?
Report Abuse | Write a Review
Share on Facebook Share on Twitter Share on Delicious
September 30, 2012 kappa 5x7
Review by
brino from columbia,mo
Overall
  • 5.0
Durability
  • 4.0
Value
  • 5.0
Features
  • 5.0
Design
  • 4.0
Usability
  • 5.0
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.
Help other customers find the most helpful reviews
Was this review helpful to you?
Report Abuse | Write a Review
Share on Facebook Share on Twitter Share on Delicious
View All 20 Reviews for Infinity Kappa 680.9cs
Speaker Wire
Upgrade your factory speaker wire to aftermarket speaker wire and hear the difference! Using thicker gauges, newer technology, and higher quality materials, aftermarket speaker wire is key to upgrading the sound in your car.
  Product Price Add?
20 ft. of 16 AWG KICKER X-Series Speaker Wire 20 ft. of 16 AWG KICKER X-Series Speaker Wire
Get high quality sound from Kicker's twisted-pair, true to gauge speaker wire.
$16.95
50 ft. of 14 AWG StreetWires Speaker Cable 50 ft. of 14 AWG StreetWires Speaker Cable
Streetwires Super Cable provides a zero-grip insulation for a smooth install as well as true gauge twisted wire construction.
$39.99
Sound Dampening Material
Get optimal sound from your new speakers with some high quality sound dampening material. It will keep the road noise out and the music inside the car.
  Product Price Add?
NVX SDSK2 Speaker Kit NVX SDSK2 Speaker Kit
Eliminates speaker panel distortion and reduces vibration, rattles, and squeaks!
$14.99
NVX SDRLR1 Sound Dampening Rubber Roller 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!
$8.95
Installation, Tools & Accessories
Get all of the tools and accessories to install your new speakers like a professional, or take your car to an expert and have them installed by redeeming professional installation cards.
  Product Price Add?
Car Stereo and Speaker Installation Tool Kit Car Stereo and Speaker Installation Tool Kit
Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.
$14.99
Door Panel & Upholstery Remover Tool Door Panel & Upholstery Remover Tool
The ideal tool for removing your car's door panels to replace you speakers!
$11.99
Universal Window Handle Remover Tool Universal Window Handle Remover Tool
Designed to easily remove the manual window handles without breaking any interior pieces.
$11.99
Universal Wire Puller & Grabber Universal Wire Puller & Grabber
Running wires has never been easier! This wire puller allows you to run wires through those hard to reach places!
$8.99
22-18 AWG Butt Connectors 22-18 AWG Butt Connectors
These red butt connectors are perfect for connecting the speaker wire when replacing your factory speakers!
$4.99
16-14 AWG Butt Connectors 16-14 AWG Butt Connectors
These blue butt connectors are ideal when connecting thicker speaker wire your new aftermarket speakers!
$4.99
Tone Generators and Sound Testing Equipment
Optimize your new system's sound quality by testing and calibrating all of your components with these items.
  Product Price Add?
Scosche SPL Meter Scosche SPL Meter
Monitor the noise level of your new car audio system with this SPL meter measuring from 60-135 dB.
$24.99
AutoSound 2000 CD-101 AutoSound 2000 CD-101
Low frequency test CD
$12.99
AutoSound 2000 CD-102 AutoSound 2000 CD-102
High frequency test CD specifically designed for the set-up and evaluation of sound system imaging and placement.
$12.99
AutoSound 2000 CD-103 AutoSound 2000 CD-103
Audiophile reference series test disc for evaluation of all audio components.
$12.99

Product Summary

Manufacturer: Infinity
Model number: 680.9cs
UPC: 050667110154
Weight: 9.50 lbs
Internal SKU: 6809cs
Internal product ID: 13971