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Infinity Kappa 303S

Kappa Series 3" midrange speakers

Item # 108K303S

Expand your Infinity Kappa Series component system with this pair of Kappa 303S 3" midrange speakers.

Find what Fits your vehicle

Expand your Infinity Kappa Series component system with this pair of Kappa 303S 3" midrange speakers.

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Item # 108K303S

Ships free today

In stock

Deeply discounted installation gear

$219.95 pair

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Since 1974

Years of experience making people happy.

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About the Infinity Kappa 303S

3-way your Kappa components

Expand your Infinity Kappa Series component system with this pair of Kappa 303S 3" midrange speakers. The Kappa silk dome midrange driver will hold its shape when the power's cranked up, giving you a robust midrange presence and filling in all the vocal and instrumental details. You'll hear a warmer, more lifelike presentation of your music. And these little domes handle up to 55 watts RMS, so they will definitely hang with Infinity Kappa or any other high-performance components.

3-way your Kappa components

Expand your Infinity Kappa Series component system with this pair of Kappa 303S 3" midrange speakers. The Kappa silk dome midrange driver will hold its shape when the power's cranked up, giving you a robust midrange presence and filling in all the vocal and instrumental details. You'll hear a warmer, more lifelike presentation of your music. And these little domes handle up to 55 watts RMS, so they will definitely hang with Infinity Kappa or any other high-performance components.

Crossovers included

These midrange speakers are designed to work with Kappa Series component systems which include crossovers that can be switched to 3-way mode. Infinity also includes bandpass crossovers for excellent tonal balance when incorporating these into any 3-way system.

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Product highlights:

  • 3" silk dome midrange speakers
  • grilles and crossovers included
  • 3-ohm impedance
  • handles up to 55 watts RMS (165 watts peak power)
  • frequency response: 200-15,000 Hz
  • sensitivity: 93 dB at 2.83 volts
  • warranty: 3 years
  • Our 60-day money-back guarantee
  • MFR # INFSPKKA303SAM

What's in the box:

  • 2 Midrange drivers
  • 2 Grilles
  • 2 Grille frames
  • 2 Crossovers
  • Two 20" Crossover input wires
  • Four 1-1/2" Allen head screws
  • 3mm Allen head bit
  • Eight 1" Screws
  • 8 Speed clips
  • 2 Adhesive backed Infinity logo badges
  • 2 Adhesive backed foam gaskets
  • Template on box
  • Installation manual

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More details on the Infinity Kappa 303S

Pat M.

Features & specs

General
Speaker Size 3
Design 1-way
Tweeter Design ---
Impedance (Ohms) 3
Tweeter Composition ---
Woofer Composition ---
Woofer Surround Rubber
Parts Warranty 3 Years
Labor Warranty 3 Years
Specifications
Sensitivity (1W at 1 meter) N/A
Sensitivity at 2.83 volts 93
Frequency Response 200 - 15k Hz
Minimum RMS Wattage ---
Maximum RMS Wattage 55
Peak Power Handling (Watts) 165
Top-mount Depth (Inches) 1 1/4
Bottom-mount Depth (Inches) 1 9/16
Cutout Diameter or Length (inches) 2 15/16
Mounting Height (Inches) 0.343

Product Research

Features

Midrange Upgrade: These midrange drivers are designed for use with the Kappa 603CF, 503CF, or 693C 2-way component sets (all sold separately). The crossovers included with the component sets can be set to 3-way, and they integrate with the crossovers included with these midrange.

Note: These midrange drivers are not interchangeable with previous generation models; the connection to the component set's crossover is different.

Crossovers: Each crossover has an 8" output wire attached, terminated with tinned bare wire. The wire to connect the midrange crossovers' inputs to identical plugs on the crossovers included with the 2-way component sets is included.

Crossover Dimensions:

  • Width: 4⅛"
  • Height: 1⅛"
  • Depth: 1¾"

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Customer Q&A

2 questions already asked

Q
Do the 303s speakers come with a crossover that alow them to be ran active off there own amp channel?
[ Travis  Jan 08, 2023 ]
1 answer
A
They do, Travis! These fantastic Infinity midrange speakers are designed to work with Kappa Series component systems which include crossovers that can be switched to 3-way mode. Infinity also includes bandpass crossovers if you are using these without the matching components for excellent tonal balance when using these with any stereo system. Make sure your amp does not exceed the 55-watt RMS ratings and you are golden!
[ Bo  Jan 09, 2023 ]  Staff
Q
If these 55W 303S are on the same channel as 693C components, 3-way, how can they handle 145W? I'm not understanding the physics. Wouldn't they blow? Thanks!
[ James  Dec 28, 2022 ]
1 answer
A
The combined crossover network of the 693C and 303S allows for more wattage to be used without damaging the drivers. Bass frequencies require the most power to reproduce. Mids and highs require less power to be reproduced, and as such the mid and tweeter receive less power via the crossover network.
[ Nemo  Dec 28, 2022 ]  Staff

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