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Kenwood KFC-C1739ie

6-3/4" / 7" 3-way Image Enhancer Series Speakers


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  • 170mm Image Enhancer Series Car Speakers (Fits 6-3/4" and/or 7" Locations)
  • Power Handling:
    • Peak: 340 watts per pair / 170 watts each
    • RMS: 80 watts per pair / 40 watts each
  • Mica-injected polypropylene cone woofer
  • Urethane rubber surround
  • 1-3/16" Midrange cone woofer
  • 3/8" PEI dome tweeter and supertweeter
  • Image enhancer capability reduces distortion in high and mid frequencies
  • 4 ohms impedance
  • Top-mount depth: 2-3/8"
  • 1-year Sonic Electronix warranty

Priced Per Pair

Fits 6.75", 6.76", 6-3/4", 170mm and most 7" locations

Speaker Specifications

This is the manufacturer product line of speakers.
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.
6-3/4" (Oversized 6-1/2")
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.
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.

PEI (Polyetherimide)
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.
Mica Injected Polypropylene (MIPP)
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.
170 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.
40 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".
92 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).
30 - 30000 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
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.
Cutout Dimensions
Refers to the dimensions of the hole, measured in inches or millimeters, required to contain the speaker.
5-5/8" x 5-5/8" 
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.

Specials with this Item

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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



great value

August 15, 2011

I love this unit. Works well for me.

3 of 4 found this helpful

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big improvement

September 16, 2010

cant even get these in canada...put them in '06 silverado doors. you lose any bass you had with oem speakers, but the sub fixes that, and the mids/highs are so much cleaner, no more mud!

4 of 6 found this helpful

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Great speakers.

March 3, 2012

Bought these for my friends Nissan Pathfinder as a gift. Installed it in the rear doors. Overall happy with the product. Even though these speakers are somewhat small (comparing to the 6x9 in the front doors), they produce unbelievable sound. Only complaint is that I did not know that an adapter was needed to mount it, as the speaker mounting holes did not fit the stock mounting holes of the Pathfinder. Otherwise, everything was great.

3 of 5 found this helpful

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Everett, WA

Crisp, clear sound

February 20, 2012

I've got about 75w rms going to each of these speakers. I can crank them as loud as I want and they still sound great. Probably sound even better once my in-line cross-overs get here.

3 of 6 found this helpful

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Dunnellon, FL

Good speakers at a great price

July 8, 2010

Nice speakers, good sound, fairly easy to install. The sale price and free shipping was a great deal.

3 of 7 found this helpful

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Brandon Florida

Awesome Kenwood ie series speakers!!

October 15, 2009

I put these KFC-C1739ie speakers in the front doors of my sons Acura RSX. I put the Kenwood 6.5 speakers of the same series in the rear, and all around in my daughter's Saturn. All of these Kenwood speakers sound great. My son's are running off a Pioneer head unit DEH P6400 and my daughter's are amplified (she has the Premier model Pioneer head unit DEH P640) off a Pioneer amp. Amped or not, these speakers sound great, very clean. Just look at the frequency response numbers. High quality materials too. They've been using these speakers for 6 months and still love them. They sound just as great as the day we put them in. We live on the bay in Tampa Florida. The air here is VERY humid. No problem with the speakers. Buy some!!!

2 of 6 found this helpful

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Dawsonville, GA


April 23, 2008

I absolutely love these speakers. I baught a set of these for my 2000 altima and they sound amazing. I them baught another set for the rear and the music is unbelievably clear. I have them hooked up to an aftermarket panasonic CQ7103U and it drives them. I'm going to get an amp to bring out the mids and highs. I listen to live music and these speakers shocked me at how well they recreate the peter frampton-"Do you feel like I do" break them in before you really crank them up. I will say do not put much bass to them because the woofers will peak out quickly. other than that I give them the highest rating possible.

2 of 6 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 $29.99

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

16-14 AWG Butt Connectors

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

Your Price $4.99

16-14 AWG Blue T-Tap Adapters

Allows for fast and easy splicing of wires by easily tapping into the cable.

Your Price $4.49

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!

Your Price $7.99

Dynamat Xtreme Speaker Kit 10415

Enough sound dampening for 2 speakers!

Your Price $17.95

Car Stereo and Speaker Installation Tool Kit

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

Your Price $16.99

Universal Wire Puller & Grabber

Running wires has never been easier! This wire puller allows you to run wires through those hard to reach places!

Your Price $6.99

Xscorpion 9-Piece Nylon Plastic Pry and Chisel Tool Set

Easily removes dash/trims, door clips, panels and pins, rubber grommets and vehicle emblems.

Your Price $14.99

Xscorpion WDCR2 Window and Door Clip Remover

Removes and installs handle and window crank clips.

Your Price $6.99

3 in 1 Wire Quick Splice T-Tap and Butt Connector Crimper + Wire Cutter

Used for cutting copper and aluminum wires up to 8 gauge.

Your Price $29.99

NVX SDRLR1 Sound Dampening Rubber Roller

Install your Sound Dampening with ease! This heavy duty rubber roller is designed specifically to install your NVX products!

Your Price $7.99

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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-C1739ie