Garage
Shop

Infinity Kappa 50.9cs

5-1/4" 2-way Kappa Series Component Speakers System (KAPPA50.9CS)

Infinity
Shop all Infinity
Product videos
highlight-star-icon

5.25" Kappa Series 2-way Component Speakers System • 225W Max • 85W RMS • Woven glass fiber cone woofer • Rubber surround • Edge driven UHF dome tweeter • Direct connect computer-optimized, voice-matched outboard passive crossover

Learn more about the 509cs

Good news and a little bad...

This item has been discontinued

But you may be interested in the newest model that's available.

5011cs thumbnail

Infinity Kappa 50.11cs

OUR PRICE: $159.95

View item

Product Highlights


5.25" Kappa Series 2-way Component Speakers System • 225W Max • 85W RMS • Woven glass fiber cone woofer • Rubber surround • Edge driven UHF dome tweeter • Direct connect computer-optimized, voice-matched outboard passive crossover

Description


Infinity brand icon

Authorized dealer

Buy with the Infinity 52.9I Speakers + Infinity 120.9W Sub + RE Audio XTX500.5 Amp & Save $50.00!


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:

  • 5-1/4" Kappa Series 2-way Component Speakers System
  • Power Handling:
    • Peak: 450 watts per set / 225 watts each side
    • RMS: 170 watts per set / 85 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 ohm impedance
  • Top-mount depth: 2-3/16"
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty

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

Product history:

Infinity 50.11cs thumbnail
(newest, current model)
Infinity 50.9cs thumbnail
(previous model, replaced by Infinity Kappa 50.11cs)
Infinity KAPPA-50.7CS thumbnail
(previous model, replaced by Infinity Kappa 50.9cs)
Infinity 50.5CS thumbnail
(previous model, replaced by Infinity Kappa 50.7cs)

Best selling similar products

Reference 5030cx small

Infinity Reference 5030cx (REF5030CX)

• 195 watts Peak Each, 65 watts RMS Each
• 3/4" Textile Edge Driven Dome tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

(2)

$99.95

List price $249.95

REF507CF small

Infinity REF507CF (INFSPKRF507CFUS)

• 195 watts Peak Each, 65 watts RMS Each
• 3/4" Textile Edge Driven Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

$219.95

List price $249.95

VSP525KIT small

NVX VSP525KIT

• 375 watts Peak Each, 125 watts RMS Each
• 1" Silk Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB
• Mounting Depth: 2.04"

(27)

$99.99

List price $119.99

R152-S small

Rockford Fosgate Prime R152-S

• 80 watts Peak Each, 40 watts RMS Each
• 1" Mylar Balanced Dome tweeters
• Mica Injected Polypropylene - MIPP cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB

(26)

$79.99

List price $79.99

TERMINATOR52 small

MTX Audio TERMINATOR52

• 70 watts Peak Each, 35 watts RMS Each
• 1" Mylar Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 83.6 dB

(5)

$39.99

List price $129.95

PR503CF small

Infinity Primus 503CF (PR503CF)

• 150 watts Peak Each, 50 watts RMS Each
• 3/4" Silk Edge Driven Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 91 dB

(1)

$119.95

List price $149.95

XED525C small

Cerwin-Vega XED525C

• 250 watts Peak Each, 30 watts RMS Each
• 1/2" Metal Balanced Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

(8)

$59.99

List price $71.99

Kappa 503CF small

Infinity Kappa 503CF (INFSPKKA503CFAM)

• 240 watts Peak Each, 80 watts RMS Each
• 3/4" Silk Edge Driven Dome uni-pivot and angled tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

(1)

$279.99

List price $449.95

DB5252 small

Polk Audio DB5252 (DB 5252)

• 300 watts Peak Each, 100 watts RMS Each
• 3/4" dual Silk Dome tweeters
• UV-Resistant Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

(4)

$200.00

List price $209.99

51KSS504 small

Kicker KSS5 (51KSS504)

• 200 watts Peak Each, 100 watts RMS Each
• 1" Silk Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

(2)

$249.99

List price $279.99

Specifications & Details


Speaker Specifications
Speaker Size
5-1/4"
Design
2-way Component System
Tweeter Design
Dome
Tweeter Composition
UHF
Woofer Composition
Woven Glass Fiber
Woofer Surround
Rubber
Peak Power Handling
225 watts
RMS Power Handling
85 watts
Sensitivity
93 dB
Frequency Response
55 - 35000 Hz
Impedance (Per Voice Coil)
2 ohm
Top-Mount Depth (Mounting Depth)
2-3/16"
Bottom-Mount Depth
2-8/16"
Cutout Dimensions
4-3/4" x 4-3/4" 
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

50.9cs

Weight:

6.50lbs

Internal SKU:

509cs

Internal Product ID:

13968

Product and How-to Videos


Customer Ratings & Reviews


Infinity Kappa 50.9cs thumbnail image

5 star
100%
4 star
0%
3 star
0%
2 star
0%
1 star
0%



Durability
5
Value
5
Features
5
Design
5
Usability
5

Customer Reviews

Sort by:

Loading...

WOOOW!

I just got this installed in my car, I run them with crunch amp. and these are really loud and clear. I have never had so good speakers and never heard better.

By Sladjan on December 29, 2009

11 found this helpful




OPTIHC3502 small

Lanzar OPTIHC3502 Opti HC Series

2-Channel Digital High Current Power Amplifier

$179.99

List price $519.99

PPMCL30 small

Pyle Pro PPMCL30 (PPMCL-30)

30 ft. of 12 Gauge Professional Symmetric Microphone Cable, XLR Female to XLR Male

$9.99

List price $24.99

S.52 small

Precision Power PPI S.52

5-1/4" Sedona Series 2-way Car Speakers

(3)

$19.95

List price $44.95

WRI-P small

PAC WRI-P

Wireless Remote Control Adapter for Pioneer Head Units with a Wired Remote Control Input

$33.99

List price $34.95

ZX2500.1 small

Kicker ZX2500.1

ZX-Series Class D Monoblock Amplifier 06ZX2500.1

(15)

$663.28

List price $1699.99

SL60 small

Boston Acoustics SL60

SL Series 6-1/2" 2-way Component System (SL-60)

(4)

$199.99

List price $399.99

DCT282 small

Lanzar DCT282

4000W Max, 2-Channel, District Series Class AB Car Amplifier

(3)

$159.99

List price $459.99

82-4600 small

Metra 82-4600

Universal Aftermarket 6-1/2 Inch Speaker Installation Kit

(7)

$29.99

List price $37.99

Related Searches


Save up to 10 different vehicles in your garage

Add vehicle
Loading...
Identify your vehicle and submodel details
  • Owner's manual
  • Vehicle's insurance card
  • Vehicle registration
  • Vehicle produced after 2005: Inside driver's side door
  • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
Car Info Side Door Icon
Vehicle Registration Icon
Vehicle Insurance Icon

Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.