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Kicker 47KSC504 KS Series 5-1/4" 2-way car speakers

Item # 20647KSC50

Kicker designed their KS Series to be a substantial step up from your factory speakers.

Find what Fits your vehicle

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Kicker designed their KS Series to be a substantial step up from your factory speakers.

Item # 20647KSC50

Shop all Kicker 5-1/4" Speakers

About the Kicker 47KSC504

Alexander H.

Smooth detail

Kicker designed their KS Series to be a substantial step up from your factory speakers. The KSC504 5-1/4" speakers feature a polypropylene woofer that provides a natural sound with a satisfying low end. And the 3/4" silk dome tweeter prioritizes smoothness in your music's vocal and instrumental details. Kick out your stale, old sound and rediscover how your favourite songs were meant to be heard.

Smooth detail

Kicker designed their KS Series to be a substantial step up from your factory speakers. The KSC504 5-1/4" speakers feature a polypropylene woofer that provides a natural sound with a satisfying low end. And the 3/4" silk dome tweeter prioritizes smoothness in your music's vocal and instrumental details. Kick out your stale, old sound and rediscover how your favourite songs were meant to be heard.

Use factory or aftermarket power

Not planning on swapping out your factory radio or adding an amp? No problem. With the KS Series, Kicker created a highly sensitive design that conjures hefty volume even from low-powered factory radios.

Kicker prioritizes fit

These low-profile speakers feature a reduced mounting depth and minimal tweeter protrusion, making them a match for almost any car. And Kicker offers optional black grilles that'll add nice flair to your custom installation.

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Product highlights:

  • 2-way car speakers (pair)
  • 5-1/4" polypropylene woofer cone with rubber surround
  • 3/4" silk dome tweeter
  • handles up to 75 watts RMS (150 watts peak power)
  • frequency range: 45-21,000 Hz
  • sensitivity: 90 dB
  • top-mount depth: 1-3/4"
  • impedance: 4 ohms
  • grilles not included
  • warranty: 2 years
  • MFR # 47KSC504

What's in the box:

  • Two 2-way speakers
  • Two 11" Lengths of speaker wire (tinned wire on one end and female quick slides on the other)
  • 4 Red plastic wire caps
  • Eight 1-1/8" Screws
  • Quick-Start guide (English/ Spanish/ German/ French)
  • Template

Customer reviews for Kicker 47KSC504

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5.0 out of 5 stars
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More details on the Kicker 47KSC504

Pat M.

Features & specs

General
Speaker Size 5 1/4
Design 2-way
Tweeter Design 3/4" Dome
Impedance (Ohms) 4
Tweeter Composition Silk
Woofer Composition Polypropylene
Woofer Surround Rubber
Parts Warranty 2 Years
Labor Warranty 2 Years
Specifications
Sensitivity (1W at 1 meter) 90
Sensitivity at 2.83 volts N/A
Frequency Response 45 - 21k Hz
Minimum RMS Wattage 15
Maximum RMS Wattage 75
Peak Power Handling (Watts) 150
Top-mount Depth (Inches) 1 13/16
Bottom-mount Depth (Inches) 2 1/16
Cutout Diameter or Length (inches) 4 9/16
Mounting Height (Inches) 0.316
Frame Width 5.145
Frame Length 5.145
The Kicker 47KSC504 replaces these items:

Product Research

Features

Woofer Cones: The Kicker KS Series speakers feature durable polypropylene woofer cones, resistant to moisture and the temperature extremes found in automotive applications.

Dome Tweeters: The ¾" silk dome tweeters provide a smooth high frequency response with a wide dispersion pattern. The tweeters have neodymium magnets.

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Customer Q&A

12 questions already asked

Q
What amp should be used for 2 pair of these kicker 47KSC504?
rick g  Jun 02, 2023
1 answer
A
A common choice for powering these speakers would be the Kicker 46CXA360.4T. Here's a link to that amplifier for reference: www.crutchfield.com/p_20646CX36T/item.html
zachary  Jun 02, 2023 (Staff)
Q
I'd like to replace the OEM woofers in the front doors of my 2019 Alltrack S with these Kicker 47KSC504 2-way speakers. Questions are - 1) what do I do with the stock OEM tweeters in the front pillar, 2) is there a stock external crossover, where is it located, and what do I do with that, and 3) if I just leave the existing pillar tweeters and crossovers in place, how will the new Kicker tweeters be engaged, and is there a chance I'm going to do some damage to the system? Thanks!
james  Apr 28, 2023
1 answer
A
Thank you for your question, James. You will want to contact an Advisor by phone (1-800-324-9695) or online chat to discuss compatibility with your factory system. They will be able to pull up your vehicle and see if this will integrate. If it does not, then they will also be able to discuss other options with you.
andrea  Apr 28, 2023 (Staff)
Q
will these fit on a 7 series rear deck section?
jose  Sep 17, 2022
1 answer
A
Greetings Jose, and thank you for your question. I would need a bit more vehicle information. Year, make, model, etc.
hogan  Sep 17, 2022 (Staff)
Q
Are these suitable for outdoor use on Harleyâ??s.. waterproof?
scott  Jun 03, 2022
1 answer
A
No, these are not marine/weather rated at all. The Polk DB series or MM series speakers would be more suitable for a Harley. Also, we have some custom systems for a range of Harleys. If you input the year and model on our "Find what fits your vehicle" page, that's where you can find possible options!
trevor  Jun 03, 2022 (Staff)
Q
Would these be plug and play with a 1999 7 series or would i need to do some rewiring?
fredis  Jun 01, 2022
1 answer
A
These speakers will be drop in replacements for front and rear doors in that 99 BMW 7 series, yes!
thomas  Jun 01, 2022 (Staff)
Q
Are the 75 rms for each speaker or for both ?
alberto  Mar 04, 2022
1 answer
A
Each speaker can handle up to 75 watts rms each! I have mine running off of a 2001 BMW 530i Business Cd system which says it's giving out 20 watts to each speaker and they sound good but I have a 4 channel amp that I plan to hook up to them and it's rated at 75 watts rms x4 so I can't wait to hear them powered by this amplifier!! These Kicker 5 1/4 coaxial speakers are a great choice bc of their high sensitivity they are very adaptable to any power source!! I hope that clears up any confusion or other answers. If not ask me I have been doing car audio for over 25 years
brian  Mar 05, 2022
Q
How well do these speakers work with a 2019 factory head unit. It is not the top of the line factory unit?
tom  Feb 10, 2022
1 answer
A
We have not received any answers from other customers on your question. I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They should be able to help answer your question.
kenneth  Feb 14, 2022 (Staff)
Q
Does one set come with front and back?
brayden  Aug 16, 2021
2 answers
A
No!! 2 speakers per set!!
brian  Aug 17, 2021
A
Set, 2 speakers .
daniel a  Aug 16, 2021
Q
Is there a dimensioned drawing available?
doug  Jun 27, 2021
1 answer
A
You can find the dimensions on page 4 of the owner's manual along with a picture diagram on page 8: https://pdf.crutchfieldonline.com/ImageBank/v20200524011600/Manuals/206/20647KSC27.PDF
allison  Jul 12, 2021 (Staff)
Q
can you confirm the overall diameter including grilles?
doug  Jun 27, 2021
1 answer
A
There are not grilles included with these speakers. They are sold separately. The outdiameter of them is 6.2" https://www.crutchfield.com/p_20647KSC5G/Kicker-47KSC5G.html
thomas  Jul 08, 2021 (Staff)
Q
I have 2 pair of these running off a 4 channel kicker amp and at high volume the tweeters cuts out n then when i lowered volume they come back on, what can i do to prevent this?
dj black  Apr 08, 2021
1 answer
A
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer.
kristina  Apr 20, 2021 (Staff)
Q
Are these water resistant?
derek  Jul 21, 2020
1 answer
A
I believe they are not but I had left all my windows and my sunroof open and it poured rain extremely hard overnight and the next morning I wen to my car which had puddles in it so I thought I was doomed but to my surprise when I turned on my stereo all 4 of the Kicker speakers were playing just fine!! It has been 2 weeks since the rain and they are still sounding amazing!! These speakers sound great considering I am running them off a factory '01 BMW amplifier with the other 6 stock speakers!!! I'm ordering a 4 channel amp so I can really make these speakers crank, but even as they r powered now they sound pretty loud and clear!!! They r a great choice for 5 1/4 speakers!!!
brian  Jul 22, 2020
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