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- 2%
Infinity KAPPA603CF 6-1/2" (165mm) Two-Way Component Speaker System
Infinity KAPPA603CF 6-1/2" (165mm) Two-Way Component Speaker System
Infinity KAPPA603CF 6-1/2" (165mm) Two-Way Component Speaker System
Infinity KAPPA603CF 6-1/2" (165mm) Two-Way Component Speaker System
Infinity KAPPA603CF 6-1/2" (165mm) Two-Way Component Speaker System
Infinity KAPPA603CF 6-1/2" (165mm) Two-Way Component Speaker System
Infinity KAPPA603CF 6-1/2" (165mm) Two-Way Component Speaker System
Infinity KAPPA603CF 6-1/2" (165mm) Two-Way Component Speaker System

Infinity KAPPA603CF 6-1/2" (165mm) Two-Way Component Speaker System

(47 reviews)

KAPPA 603CF - Black

KAPPA 603CF - Black

$385.00 - $403.68

in 3 offers

The lowest price for Infinity KAPPA603CF 6-1/2" (165mm) Two-Way Component Speaker System right now is $385.00 at Elite Electronics, compared across 3 retailers.

The all-time low was $384.24 on 12 Feb 2026. That's the lowest price we've ever tracked — a great time to buy.

Prices last updated 7 June 2026.

Infinity KAPPA603CF 6-1/2" (165mm) Two-Way Component Speaker System

$385.00

(47 reviews)

KAPPA 603CF - Black

KAPPA 603CF - Black

Price comparison

Price data powered by pricesAPI.io

Last updated at 07/06/2026 20:51:59

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.
Amazon.com.au

$403.68

Infinity 2-Way Component Speakers, 6.5 Inch

Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

Elite Electronics

$385.00

Infinity KAPPA 603CF 65 2Way Component Speakers

Free delivery between 10–16 June

Dick Smith AU

$399.00

Infinity KAPPA 603CF 6.5" 2-Way Component Speakers

Free delivery

Price history

Price history

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.

Reviews

14 September 2024Elizabeth

originally posted on sonicelectronix.com

-

5 January 2024Matteo

originally posted on onlinecarstereo.com/

This upgrade is a masterclass in clarity and balance. Bright, nuanced highs, precise mids, and bass that hits the sweet spot every time. The -3db crossover is a genius touch, protecting my tweeters while letting them sing. Huge step up from stock, even with the same amp. Quality build, fantastic performance – highly recommended!

19 February 2023RICARDO

originally posted on sonicelectronix.com

-

Price comparison

Updated 3 days ago
Please note: price history and price alerts are not available for some stores, including Amazon.com.au.
Amazon.com.au

$403.68

Infinity 2-Way Component Speakers, 6.5 Inch

Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

Elite Electronics

$385.00

Infinity KAPPA 603CF 65 2Way Component Speakers

Free delivery between 10–16 June

Dick Smith AU

$399.00

Infinity KAPPA 603CF 6.5" 2-Way Component Speakers

Free delivery

Price history

Price history

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.

Reviews

14 September 2024

-

Elizabeth originally posted on sonicelectronix.com
5 January 2024

This upgrade is a masterclass in clarity and balance. Bright, nuanced highs, precise mids, and bass that hits the sweet spot every time. The -3db crossover is a genius touch, protecting my tweeters while letting them sing. Huge step up from stock, even with the same amp. Quality build, fantastic performance – highly recommended!

Matteo originally posted on onlinecarstereo.com/
19 February 2023

-

RICARDO originally posted on sonicelectronix.com
30 August 2024

-

Ross originally posted on sonicelectronix.com
Awsome
21 May 2024

Awsome

oginla123 originally posted on ebay.com
Buy anything but these!
24 July 2024

First off the crossover networks are horrible and cheap . These speakers are a bit over boosted on the 4-5000k range . I made the mistake of making them a 3 way with the soft dome midrange add ons, these made that awful mid range sound much worse . I was really disappointed in these . Haven't decided on better set yet . Something cheaper might be better like the JBL or Polk

Keith originally posted on sonicelectronix.com
Came with a bad crossover
11 January 2024

Bought these expecting to receive a issue free product but during my install I discovered one of the crossovers that these speakers came with was non functional . Confirmed this by swapping crossovers and being able to get the speakers working . I requested a crossover replacement as these should have some warranty . Instead I am expected to open my door panels again remove the working equipment that I have professionally installed and return the entire speaker set to then get a replacement because of that one bad crossover . This is extremely frustrating, I am currently waiting on a response from their support team for over a week now with no response . I did not expect this from sonic electronix .

Armaan originally posted on sonicelectronix.com
Never received. They cancelled the order
17 August 2024

I’m guessing they cancelled my order because they had the item listed for cheaper than everyone else. It also took a week before they cancelled it, would not recommend this vendor.

Haley originally posted on walmart.com
Nice Clear Sound
4 December 2023

Definite upgrade from stock speakers!! Pretty easy to install with basic skills .

ERIC originally posted on sonicelectronix.com

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