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Kicker KSC404 (47KSC404)

150W Peak (75W RMS) 4” KS Series 2-Way Coaxial Speakers with Silk Dome Tweeters

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• 150 watts Peak Each, 75 watts RMS Each
• 1/2" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Learn more about the 47ksc404

Good news and a little bad...

This item has been discontinued

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Description


Kicker brand icon

Authorized dealer

Product Details:

  • 4" KS Series 2-way Coaxial Car Speakers
  • Power Handling:
    • Peak: 300 watts per pair / 150 watts each
    • RMS: 150 watts per pair / 75 watts each
  • Polypropylene cone material
  • Rubber speaker surround
  • 1/2" Silk Dome Tweeters
  • High power handling
  • Thin-mount design
  • Neodymium magnet motor structure
  • Top-mount Depth: 1-13/16"
  • Cutout Dimensions: 3-3/4"
  • Impedance: 4 ohm
  • Frequency Response: 60 - 20000 Hz
  • Sensitivity: 88 dB
  • Grilles not included
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

  • Priced Per Pair

Product history:

Kicker 51KSC404 thumbnail
(newest, current model)
Kicker KSC40 thumbnail
(previous model, replaced by Kicker KSC4 (51KSC404))

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Specifications & Details


Speaker Specifications
Series
KS Series
Priced Per
Pair
Number of Speakers
2
Speaker Size
4"
Design
2-way Coaxial
Tweeter Design
Dome
Tweeter Size
1/2"
Tweeter Composition
Silk
Woofer Composition
Polypropylene
Woofer Surround
Rubber
Peak Power Handling
150 watts
RMS Power Handling
75 watts
Total PEAK Per Pair/Set
300 watts
Total RMS Per Pair/Set
150 watts
Sensitivity
88 dB
Frequency Response
60 - 20000 Hz
Impedance (Per Voice Coil)
4 ohm
Shallow Mount Installation
Yes
Magnet Type
Neodymium
Top-Mount Depth (Mounting Depth)
1-13/16"
Bottom-Mount Depth
2-1/16"
Cutout Dimensions
3-3/4"
General specifications
Marine Certified
No
Hi-Res Certified
No
Color
Black
Illumination
None
Speaker Grilles
Yes
What is in the box?
Paperwork
User manual
Warranty/Registration card
WITB: Speakers
Speakers (2)
Grilles (2, attached)
Speaker mounting brackets (2)
Mounting screws (8)
Mounting clips (8)
Speaker connection cables (2)
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

KSC40

Weight:

2.60lbs

Internal SKU:

47ksc404

Internal Product ID:

178879

Customer Ratings & Reviews


Kicker KSC404 (47KSC404) thumbnail image

5 star
67%
4 star
0%
3 star
33%
2 star
0%
1 star
0%



Durability
5
Value
5
Features
5
Design
5
Usability
5

Customer Reviews

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The following review is for 51KSC404, which is a part of the bundle you are viewing.
By Roger on April 7, 2025 Checkmark Icon Verified purchase

2 found this helpful


Great Plug and Play Speakers for 2024 Jeep Wrangler Willys

The following review is for 51KSC404, which is a part of the bundle you are viewing.

I just bought a 2024 Jeep Wrangler Willys with the basic stock speakers. The sound was horrible and I was looking for an inexpensive upgrade option. I found a thread about people using Kicker speakers that were plug and play, so I gave these a try. They were extremely easy to install and they are 1,000% times better than the stock speakers. I can't recommend enough.

By Derek on July 10, 2025 Checkmark Icon Verified purchase


The following review is for 51KSC404, which is a part of the bundle you are viewing.
By Seth on March 2, 2025 Checkmark Icon Verified purchase
2006 Subaru Impreza WRX STi




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

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