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Kenwood KFC-C1055S

210W 4" Sport Series Dual Cone Speakers

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with warranty A Pair

Order within 18 hrs 59 mins to ship 4/28

Arrives by Thursday, May 4 to zip 20147

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Kenwood KFC-C1055S

210W 4" Sport Series Dual Cone Speakers


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Eliminates speaker panel distortion and reduces vibration, rattles, and squeaks!



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General Features:

  • 210W Sport Series 4" Dual Cone Speakers
  • Power Handling:
    • Peak: 210 watts per pair
    • RMS: 21 watts per pair
  • Polypropylene woofer cone
  • Steel basket
  • Cloth surround
  • Ferrite magnet
  • 4 ohms impedance
  • Frequency Response: 45-20,000 Hz
  • Top-mount Depth: 1-11/16"
  • Sensitivity: 90dB
  • 1-year Sonic Electronix Warranty

Priced Per Pair

Product History:

Kenwood KFC-C1055S thumbnail
(newest, current model)
Kenwood KFC-1054S thumbnail
(previous model, replaced by Kenwood KFC-C1055S)
Kenwood KFC-1052S thumbnail
(previous model, replaced by Kenwood KFC-1054S)

Speaker Specifications

This is the manufacturer product line of speakers.
Sport (Kenwood)
Priced Per
Car Speakers are typically sold in pairs so you will receive 2 speakers for each speaker purchase on speakers marked "Priced Per Pair". If a speaker is marked "Priced Per Each" then the speaker is sold individually and each purchase you make will result in 1 speaker. High-powered tweeters, midrange and full-range pro audio for car speakers are typically sold per each speaker.
Speaker Size
Refers to the size of the speaker measured in inches. Every vehicle has standard application sizes. Please use our vehicle fitment guide for your vehicle's specific speaker sizes if you do not know them.
The number of individual drivers in a car speaker. Speakers with 2 drivers are known as a 2-way, and 3 drivers are known as a 3-way. Component systems are often referred to as "separates" because the tweeter is not attached to the midwoofer (main speaker driver) and mounts separately in a location such as a door post. Component systems typically come with an external crossover so you can easily adjust the high and low frequencies sent to both the midwoofer and the tweeter. Center channel speakers are great for those looking to have surround sound in their vehicle.
Dual Cone
Tweeter Design
Designs such as cone, dome, semi-dome, balanced dome, and whizzer are most popular. Cone tweeters are simple, efficient and typically are the most reasonably priced. Dome tweeters are used in most home speakers, and provide a smoother and more accurate sound. Semi-dome design is one with a dome placed inside a cone. A Balanced dome driver is a semi-dome with equal reproduction area given the cone and dome portions of the driver. A whizzer tweeter is a separate tweeter cone driven by the voice coil of the woofer.
Tweeter Size
Refers to the size of the tweeter. Typically, smaller tweeters produces less output with higher frequency response.
Tweeter Composition
Materials such as polypropylene, silk, cloth, and paper are the most common, where as many more recent tweeters are now manufactured with composites such as Aluminum, Titanium, Mylar, and other materials.

PEI is an acronym for "Polyetherimide" which is an amorphous, amber transparent, high-performance thermoplastic.

Woofer Composition
Lightweight woofer cone materials are essential for efficient operation. Poly cones produce exceptional sound and are sturdy against various changes in temperature. Paper cones are very efficient, and when treated for moisture resistance, will perform at a high level. Poly refers to polypropylene, which is thermoplastic or fibers that are polymers of propylene. IMPP refers to injection molded polypropylene, a commonly used process and material in speakers.
Woofer Surround
A speakers surround is part of the suspension system. The surround protects the cone and prevents it from being displaced as it flexes out from the basket. It is usually made of a durable material like treated foam or rubber in order to withstand the strenuous job of producing bass frequencies.
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
210 watts
RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
21 watts
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
90 dB
Frequency Response
The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
45 - 20000 Hz
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
4 ohms
Shallow Mount Installation
This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.

Top-Mount Depth
The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.
Cutout Dimensions
Refers to the dimensions of the hole, measured in inches, required to contain the speaker.
Hi-Res Audio Compatible
This feature refers to if the product is capable of Hi-Res Audio (HRA) playback.
Speaker Grilles
A grating or screen of metal or plastic bars or wires, mounted in front of a speaker as protection. If yes, the speakers will include matching speaker grilles. If no, there are no grilles included.
Number of Speakers
This is the number of speaker that is included in the package. Each purchase will result in receiving the number of speakers indicated here. Please note that some items will have multiple woofers in the same enclosure. For sets of component speakers, this number will refer to the number of sets of speakers (For example, 2 would indicate the purchase includes 2 woofers and 2 tweeters).

Please refer to the product image and description for further details about the speaker.

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
2 Star
1 Star

Average Attribution Rating



Decent Sound for the price

November 3, 2014

I was looking for a cheaper set of speakers to replace the factory set on a 1994 Sidekick. Wasn't expecting the speakers to sound spectacular. Very decent sound for the price. No lows of any sort but the mids and highs are okay.

25 of 29 found this helpful

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Greenville, SC

Great Value, Balanced Sound

June 21, 2014

I didn't see any other reviews for this speaker on the internet, so I figured I'd give these a shot since they are from a reputable company, new, and a great value. Here is my story, and review...

The stock speakers in my 2010 BMW 135i are terrible. The speakers were very shrilly, and prevented me from being able to enjoy my music at louder volumes. Once I installed these Kenwood KFC-C1055s's into my car, there was a very noticeable difference. The sound was louder due to the speaker being more efficient, and the sound was very balanced too! My car came with the base system, which does not include tweeters, and I do not feel like I need to install tweeters in my car after I boosted the treble some. These speakers are a wonderful value for the sound they produce! These speakers will work best running off of your head unit due to their low power handling. However the efficiency of the speakers allow them to produce a lot of sound per watt with an efficiency rating of 90dB.

Now onto the look and design of the speaker. The speakers are pretty low profile. They are designed in an okay manner, they look nice and professional, but they aren't something you'd want to show off due to the speaker cone design looking kind of cheap. They have a nice weight to them though, and the speakers have nice slide on connectors for when you need to install the speaker. This way you don't have to hold the door panel up while you solder the connection (I've had to do that before, and it's not fun).

Durability, Features, and Ease of Use:
The durability of the product seems to be pretty good. I've already pushed them with my head unit, and they haven't skipped a beat or distorted at all. The Features of this product are limited, since it is a value speaker... It doesn't come with any grills, (but I knew this before buying it, and grills are usually distasteful.) it does come with the easy connect and disconnect wires, the quick mounting hardware, and templates on the box. And ease of use is pretty high. The instructions on the back of the box were very informative if you required them for learning how to wire the speaker in different resistance setups, or learning how to use the mounting hardware.

Overall, I give these speakers 5 stars. They sound amazing in my setup (crossovered at 150hz). Run them off of your headunit since an amp won't provide any real benefit for their low power handling. I hope you all enjoy these as much as I have been if you do decide to buy them!

25 of 31 found this helpful

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Accessory Tools and Products

Accessories added

Streetwires 50 ft. of True Spec 16 Gauge Speaker Wire

You need speaker wire to connect your speakers!

Your Price $24.99

Belva 23 ft. of True Spec 16 Gauge Speaker Wire

100% Copper Clad Aluminum, PVC blended jacket for easy installation and high strand count for maximum audio quality

Your Price $12.99

Car Stereo and Speaker Installation Tool Kit

Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.

Your Price $20.99

NVX XTGSP2 Tone Generator and Speaker Polarity Tester

Perfect for safely troubleshooting and testing audio systems

Your Price $19.99

Xscorpion WDCR2 Window and Door Clip Remover

Removes and installs handle and window crank clips.

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Universal Wire Puller & Grabber

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Encore Universal Four Door Power Door Lock Kit

Add Power Door Locking and Unlocking while you have the Door Panels removed

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NVX SDSK2 Speaker Kit

Eliminates speaker panel distortion and reduces vibration, rattles, and squeaks!

Your Price $14.99

Stinger Roadkill Speaker Kit

Use this to eliminate rattle from your speakers!

Your Price $10.99

NVX Sound Dampening Rubber Roller

Install your Sound Dampening with ease using this heavy duty rubber roller!

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4" x 6" to 4" Speaker Adapters

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XTC 4" Round Foam Speaker Baffles

Creates a tight, acoustic seal behind the speaker to enhance the sound quality.

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16-14 AWG Butt Connectors

These blue butt connectors are ideal when connecting thicker speaker wire your new aftermarket speakers!

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16-14 AWG Blue T-Tap Adapters

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16-14 AWG Quick Disconnect Connectors

These blue quick disconnect connectors make it easy to connect and disconnect speaker wire your to your new aftermarket speakers!

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Browse 1 question and 9 answers
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Why did you choose this?
Sonic Electronix Store
Gift for my brother who has a project truck
Jodi W on Dec 4, 2016
I drive a garbage truck twelve hours a day. Speakers are shot. Company won't replace, went with well respected name brand at a low price.
John M on Jun 15, 2016
good speakers
Jesse J on Aug 18, 2016
In restoring a classic automobile, keeping by auto's originality is of utmost importance to me. Clearly, Mercedes Benz no longer stocks a 4" shallow dash speaker for my 1983 sedan, but the Kenwood KFC line offered an exact alternate product that will not require any dash depth modifications for installation. Thank you, SonicElectronix!!!
Robert R on Nov 1, 2015

Product Summary


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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Kenwood KFC-C1055S