Kenwood KFC-1666S Sport Series 6-1/2" 2-way car speakers

Does this come with both speakers for the front or just one?

Greetings Nick. Thank you for your question. It depends on the trim level of your Impreza. The hatchback, and sedan would not require adapter brackets, just re drill new mounting screw holes in the doors. The WRX version would either need brackets we include for free, or the cutout hole in those doors may need to be made a tad bigger, but not by much. If you purchase the speakers from Crutchfield, and your vehicle does need adapter brackets we will provide those on your order at no additional cost.

thomas Apr 17, 2025 (Staff)

m Mar 24, 2025

Will I have to remove the speaker guard off my doors to install these in a 2000 Subaru outback wagon?

Greetings M. Most all our car speakers are sold as a pair. Just to the right of the pricing, it will either say pair, or each. These Kenwood's are sold as a pair.

thomas Mar 24, 2025 (Staff)

thomas Mar 17, 2025

Will these speakers fit in the rear of my 97 Toyota camry?

Greetings Thomas. Thank you for your question. The entire door panel will need to be removed to replace speakers in the 2000 Outback. These speakers, and most other aftermarket speakers will fit under the factory grilles that are molded to your door panels.

thomas Mar 17, 2025 (Staff)

william Mar 05, 2025

What 4 channel amplifier would work well with my speakers (Kenwood KFC-1666S)? 2019 Nissan Versa note head unit?

We need to know more details about your vehicle specifically to confirm any speaker fitment, William. Please use our online Vehicle Guide in the link below to enter the specific trim details and we list the Kenwood KFC-1666S speakers if they are a good fit. If you have any questions or need help placing your order, do not hesitate to give us a call and an Advisor would be happy to help. https://www.crutchfield.com/m_399/Car-Speakers.html

bo Mar 05, 2025 (Staff)

mony Nov 21, 2024

Will 6 1/2" fit right in where my 6" were?

The Kenwood KFC-1666S speakers can handle up-to 30-watts RMS from an aftermarket amplifier, Sophanna. The Infinity DSP4425 4-channel amp in the link below is a great choice and offers DSP tuning features to tweak your system for the best possible sound quality! You will need the Crutchfield CK8 amp wiring kit in the second link below for power and ground connections when installing the new Infinity amp. https://www.crutchfield.com/p_108DSP4425/Infinity-DSP4425.html https://www.crutchfield.com/p_007CK8/Crutchfield-CK8-Amp-Wiring-Kit.html

bo Nov 21, 2024 (Staff)

michael a. Jun 21, 2024

Will this work with a different brand stereo system or does it have to be Kenwood as well?

This will depend largely on your vehicle. For details on installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on what you will need for an installation.

red Jun 22, 2024 (Staff)

hannah Jun 18, 2024

Is Kenwood KFC-S1666 Sport Series same as Kenwood KFC-S1666 interms of performance and sizes? I am puzzled cant find any data on sports series but just found them from some page. Whats sport series

Greetings Hannah. Thank you for your question. These Kenwood speakers can work with factory radios, or any aftermarket stereo. It does not have to be a Kenwood stereo.

thomas Jun 18, 2024 (Staff)

chimm Jul 24, 2023

will these work in my 1999 suziki grand vitara for front and back door speakers?

Greetings Chimm, and thank you for your question. The KFC-1666 model was an earlier edition. The KFC-1666S is the new Sport Series. Kenwood has 3 levels of speaker models. Sports are their more entry level, and most affordable, the next level up is their Performance Series, then their top level is Excelon Series.

thomas Jul 25, 2023 (Staff)

ledel Jun 22, 2023

What kind of 4 channel amp should I run for a set of 4 speakers? Wondering what power I should look for

These Kenwood KFC-1666S Sport Series 6 1/2" speakers are a fit for the front door and rear headliner speaker locations in your 1999 Suzuki Grand Vitara, Jerry. We even include a free wire harness adapter for a smooth install! The link below will pair the speaker package to your vehicle, and you get our Mastersheet install instructions with your order if you plan to tackle the job yourself, we are always here to help. https://www.crutchfield.com/I-rXYEc222/cart/EmailCart.aspx?emKey=3163653

bo Jun 23, 2023 (Staff)

johnathan Apr 28, 2023

I have a 2003 Volvo v70 Base, I know some of the cars in that year come stock with a amp some of which go up to 200W, the radio is HU-613. I am concerned that these speakers are going to get to much power since they are rated for 30W. Will these work?

Great question, Johnathan. These Kenwood KFC-1666S can handle 30-watts RMS, and are a really great choice for aftermarket or factory radios and amplifiers that do not exceed the 25 to 30-watt RMS range. If you have plans for an amplified system, I advise using a speaker with a little more power handling like the JBL Club 620F's in the first link below. The Kenwood KAC-M1814 in the second link below would be a great call! https://www.crutchfield.com/p_109CL620F/JBL-Club-620F.html https://www.crutchfield.com/p_113KAM1814/Kenwood-KAC-M1814.html

bo Apr 28, 2023 (Staff)

athanasius Aug 30, 2022

Do you still get the free hardware you need to install them ?

Unfortunately we do not have a precise RMS wattage rating for the individual channels of your factory amplifier. It is unlikely that these speakers will suffer due to overpowering, but we're happy to make recommendations for speakers to handle more power while also working with your factory system. Please give our advisors a call at 1-800-324-9695.

zachary Aug 31, 2022 (Staff)

david Aug 21, 2022

I'm replacing my rear deck 6.5s with these in my 2016 Challenger, how do I attach the speaker grille when the scosche mounting bracket uses the 4 holes to have a screw go through the backside and locks with a washer/nut on the top of the speaker, but none of the provided screws are long enough to go from the bracket > speaker > grille? The picture on the bracket instructions doesn't have a grille on the speaker it's demo'ing.

We do recommend including the appropriate installation gear on your order for aftermarket speakers. You may find these parts as well as all of the items we carry to fit your vehicle by using our Outfit My Car tool: http://www.crutchfield.com/car/carselector.aspx For additional details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle.

zachary Aug 21, 2022 (Staff)

william May 10, 2022

I have an 05 GMC Envoy. It has Component speakers. Do I need to modify the wiring to use these? I don't understand crossovers and such, I'm an OLD GUY!

Typically we do not use grilles included with the speakers when installing into stock locations. Our technical support team is happy to help with items ordered through us. Their number is included on the order invoice.

zachary May 15, 2022 (Staff)

james Apr 05, 2022

does it work with pioneer system?

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 these will integrate. If it does not, then they will also be able to discuss other options with you.

kenneth Apr 09, 2022 (Staff)

timothy Mar 12, 2022

Im wondering about if kenwood kfc 1666s are good speakers to put in my nissan versa 2018 and if its a good volume for the car ?

If Crutchfield sez it will fit in your vehicle it should work. You may have to change the plugs but they should work.

eric Mar 12, 2022

mahoogny Oct 26, 2021

Is it worth it to buy 4 and replace all four doors?

I love mine great sound

herbert Oct 26, 2021

alex Oct 17, 2021

4 answers

In my case it was worth it. I was replacing the head unit and wanted crisper sound so I decided to replaced all 4 factory speakers at the same time. For $50 a pair they are an economically good choice.

james Oct 17, 2021

Yes any aftermarket speaker is going to sound better than factory. I bought the cheapest set and the quality from old to new was significant

frank Oct 17, 2021

Yes, they are good speakers.

holly Oct 17, 2021

Definitely an improvement from stock not anything special but definitely get the job done

sean Oct 17, 2021

I read a review that said the speakers would sound bad If your car stereo doesn't have good watts per channel like 6 - 12 (RMS). I looked up my stereo and couldn't find the rms but could find that it's 75 peak watts. Would this be a good speaker for my stereo? (I don't have an oem stereo)

tri Oct 16, 2021

do this speakers fit my 2003 jeep liberty limited rear doors?

The typical aftermarket radio outputs 14W RMS or higher. However, not all do and more information is needed to give a confirmation either way. I recommend contacting an advisor by calling 1-800-324-9695 to check

jason Oct 20, 2021 (Staff)

adalberto Sep 02, 2021

Should I or do I need to replace any standalone tweeters? Installing these on a 2013 Hyundai Elantra.

You can check to see if this will fit your vehicle by using our Outfit My Car tool: http://www.crutchfield.com/car/carselector.aspx For additional details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle.

kenneth Sep 02, 2021 (Staff)

jim Jul 08, 2021

have 2006 patrol with blown clarion speakers 40 watt can you suggest appropriate product upgrade please?

There is no one answer to this question that works for everyone and more information is needed to properly answer it. We have advisors that can be reached by calling 1-800-324-9695 who can discuss your gear and goals to give a personal recommendation on this subject.

jason Jul 17, 2021 (Staff)

jeff Jun 18, 2021

Do you recommend buying the tools to take off the door panel or can you use stuff you have at home?

boden May 18, 2021

I am looking for a pair of speakers to replace the original speakers that came installed in my 1995 ford bronco eddie bauer edition. I do not want to cut cables or use adapters I just want to take the old ones out and put the new ones in. Which one of your speakers fits the bill?

Having the right tool for the right job always helps.... you can easily find plastic tools to help make panel removal easier without damaging the panel... don't use screwdrivers and other tools not designed for that job

edward May 18, 2021

If you're only going to do this one time, you could probably get by with wrapping a soft cloth around a flat-headed screwdriver. But I'd generally say it's worth buying the tools.

jesse May 18, 2021

elias May 07, 2021

are these a direct oem remplacement for door speakers on 2001 silverado? or will they need adapters and shims and mounting plates and whatever else?

rick Mar 07, 2021

I went to wire in these speakers and got them wired in and turn them on and then it blew a fuse and a replaced it and now nothing works? the pickup I'm using is a 1997 Dodge Ram 2500.

These are not OEM replacement speakers but can be installed using various parts that we include free with the purchase of the speakers. I recommend contacting an advisor by calling 1-800-324-9695 to discuss the installation details for your pickup

jason Mar 22, 2021 (Staff)

dalen Jan 24, 2021

What do I do with the wires?

I put them in a 2005 Silverado and everything went fine . they sound great. I'd check out the rest of your fuse box. The stereo fuse and ignition fuse are separate. Did you use the wiring from Crutchfield? That's one reason I bought from them, is the adapters to factory wire harness. I'm not much help.

stan Jan 25, 2021

james Dec 15, 2020

I'm going to be running a factory head unit, and 4 channel kicker amp powering a 10" kicker sub, and two front kicker 6.5". The rears would still be powered by the factory head unit. Would these run better (30 rms watts) than the kicker's which are 100 rms watts? Guessing head unit is under 20rms.

All I remember is that it was really easy to do. They sent extra wire connectors so the speaker connectors would fit to the car door speaker connections. Basically I didn't have to modify ANYTHING. I bought these for my 2002 Dodge Intrepid ES. You should just be able to plug each speaker with the wires to the connectors on the car.

dion Dec 29, 2020

You purchase an adapter for your vehicle and the adapter plug comes with a wire diagram to show you were all the wires from the radio hooks to the adapter

jeff Dec 29, 2020

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 Dec 29, 2020 (Staff)

eric Nov 22, 2020

Will MTX magnum auto MB210SP mega bass package. Be a good fit and not be too much wattage or blow the speakers?

The lower the RMS the better to run of a factory head unit. Most head units only put out maybe 14 watts RMS. These will sound better than factory for sure.

chris Nov 23, 2020

marcus Oct 17, 2020

Well I have to purchase another bracket for the front and the back of my vehicle even the one is provided?

The MTX bass package you mentioned takes a lot of power to drive it. Not sure what kind of Amplifier and battery system you have on your car but my install using the 6.5 in speakers was a straight forward door speaker replacement for my Frontier truck and driven by the Kenwood deck I replaced my factory Radio\CD player with. It was not a bog boom box install.

alan Oct 28, 2020

Yes great head unit

steve Oct 27, 2020

marcus Oct 17, 2020

Well I have to purchase another bracket for the front and the back of my vehicle even the one is provided?

marcus Oct 17, 2020

Looking for speaker that perfect fit front door 2003 Nissan Frontier crew cab ?

No. I didn't have to. Everything was provided for my Nissan Leaf.

roberto Oct 17, 2020

Each pair comes with two brackets, one for each speaker. So when buying for the front and back, you will have the right amount of brackets. I suggest also buying the car specific speaker wire adapter too.

david Oct 17, 2020

orlando Sep 19, 2020

This says it fits my 2003 saturn l200 but it doesn't. The holes don't add up how can I make this fit?

I put these speakers in the doors of my 08 silverado ext cab they perform great and crutchfield helps you with the wiring adapters and anything else needed for an easy perfect fit install

richard Sep 19, 2020

amanda Sep 17, 2020

Will these work with factory mark levinson system in 2008 is350?

toddski Jul 12, 2020

I have 2020 KIA optima Special Edition, what set of speakers would be a great upgrade?

Yes

joshua Jul 13, 2020

I bought these speakers to replace the OEM speakers in my 2005 Land Rover. I had to fabricate a template to mount these to the original mounting locations but that was rather easy and they worked and sound fine. You may have to do the same if your Lexus IS350 does not use a standard 6.5" round mounting. Hope this helps. Mike

michael Jul 12, 2020

brian Jul 03, 2020

I have a 2000 ram 2500 quad cab. I've been told the back doors have 5 1/4 I've heard 6 1/2 does anyone have a clue without me pulling the door panel off?

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.

thomas Jul 16, 2020 (Staff)

kevin Jun 11, 2020

Will these fit front and back doors in a 2013 Honda Ridgeline?

When we measured the stock speakers in the quad cab pickup, we found that it has 6-1/2" speakers in the rear doors. 5-1/4" speakers can be found in the rear of the standard and club cab versions of this pickup

jason Jun 24, 2020 (Staff)

cathy Apr 18, 2020

Will these fit in my 95 chevy silvarado?

Yes, this will replace the factory speakers on a Ridgeline. This went into a 2011 RTS. Use the speaker adapters provided with the speaker purchase. It's an easy install and much improvement!

chin Apr 28, 2020

Hi, I don't know why I'm getting this question, but it looks like it fits the front. You can input the vehicle and it checks: https://www.crutchfield.com/p_1131666S/Kenwood-KFC-1666S.html?

thomas Apr 18, 2020

bradlee Apr 10, 2020

Do these speakers required anything else to install on a 2007 Civic ex? (Spacers, wiring loom, etc.)

kristina Apr 22, 2020 (Staff)

Yes the bass is very good for what they are. Ithink its better than the jvc componets that are in my front doors

frank Mar 11, 2020

It is excellent no vibration great sound

perry Mar 11, 2020

Hi, I currently have the kenwood KFC-S1656 Dual Cone installed in my front door and I want to upgrade it with the KFC-S1666 2-way, does it make a noticeable difference or is it worth the upgrade especially for the mid-bass?

frankie Feb 24, 2020

thomas Mar 12, 2020 (Staff)

Specs on car speakers ?

elmer Feb 13, 2020

ive got a 1999 ek9 honda civic, will these fit in the doors?

300w rms.4 ohm impedance. Frequency response 40-22000 hz.

devin Feb 13, 2020

Here is a web page on specs. The speakers were awesome. I have never had a problem with crutchfield speakers

devin Feb 13, 2020

owen Jan 11, 2020

What 4 channel amplifier would work well with these speakers (Kenwood KFC-1666S)?

russ Jan 08, 2020

I have a 06 Hyundai Santa Fe with the monsoon factory 6 disc cd stereo. Will they fit the front door panel and are the plug and play?

Thanks for your question. For information on selecting the best amp I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences between the amp models and help you make the best choice for your system.

kristina Jan 23, 2020 (Staff)

charles Dec 29, 2019

Do these fit behind my seat of my 95 Dodge ram single cab? Do I need an adapter to fit them?

kristina Jan 10, 2020 (Staff)

kirk x Dec 09, 2019

Do these fit behind my seat of my 95 Dodge ram single cab? Do I need an adapter to fit them?

kristina Dec 23, 2019 (Staff)

kirk x Dec 09, 2019

How does the cover attach to the speaker?

kristina Dec 23, 2019 (Staff)

mike Nov 05, 2019

Can I connect this to my 2005 g35 sedan with a Bose system (from factory) with out having to buy an amp or anything else? Can I just put it and listen to music with out any modifications?

The grille is attached to the speaker using screws.

thomas Nov 14, 2019 (Staff)

carlos m Oct 03, 2019

I have a 2006 pontiac grand prix and I was wondering what typer of this speaker I needed?

While these can be installed into the front and rear doors without having to do any modifications, we do not recommend using them with the stock Bose amp. The stock speakers have a lower impedance than these speakers which means these Kenwood speakers will not even get you back to the same volume levels that you have now. The PowerBass L2-652 speakers fit just as easily as these and also have the lower impedance to work with the Bose amp. Here they are: www.crutchfield.com/p_151L2652/item.html

jason Oct 19, 2019 (Staff)

aislynn Sep 03, 2019

I have a 2010 Colorado. The front doors have tweeters in the top, and speakers in the bottom. Am I gonna have to get tweeters too? Or am I good with just these speakers? Are the existing tweeters gonna cause a problem with the tweeters on these speakers? Am I gonna just have to bypass the tweeters that exist?

Aislynn, This will depend on whether you have the Monsoon System in that Grand Prix. You may want to reach out to one of our advisors for more personalized help! https://www.crutchfield.com/support/ContactUs.aspx

thomas Sep 14, 2019 (Staff)

chris Aug 04, 2019

is this $40 for 2 side door speakers?

For best results, we recommend replacing your speakers with a component set that has a separate tweeter. When doing so, you would be replacing the tweeters that came from the factory. If you decided to use a coaxial speaker and leave your factory tweeters alone, they would not interfere with each other, but may have slightly different sounds.

thomas Aug 19, 2019 (Staff)

manuel Jul 26, 2019

Are these speakers 2 ohoms?(

Yes it is

kurt Aug 12, 2019

Yes, it's a pair

roy Aug 09, 2019

Yes and they sound very good. No distortion with good mid and high notes.

armando Aug 09, 2019

vivian Jul 09, 2019

What size of speaker baffles would I need to purchase for these speakers? Thanks for any information.

melvin Jul 19, 2019

james Apr 19, 2019

I have a 2001 Toyota Tundra SR5 Access Cab. Couple of questions. One, these should fit BOTH my front lower and rear door speakers, right? Two, does this include the free installation gear? And three, I would need to buy two pairs to replace all 4 speakers, correct? Thank you for your time and I hope I get my answers!!

6.5" baffles, I have a pair in my 01 Xtreme SS blazer and they sound great! No distortion and great mids & highs.

armando Apr 26, 2019

I didn't use any baffles, if your installing them in the car door just use the mat.

roy Apr 26, 2019

gavin Apr 17, 2019

Will these speakers fit my front doors on a 1996 Lincoln town car?

These will be able to fit the front and rear doors. Vehicle specific gear is needed to install these and we will send that gear free with the speaker purchase. These are sold in pairs. You will need two pairs (one for the front doors and the other for the rear) My Bio: https://www.crutchfield.com/bio/Paul

jason Apr 23, 2019 (Staff)

anthony Mar 18, 2019

I have a 2014 dodge dart how good do you think the bass would be with these??

I think It'll require an adapter from 9"x6" to 6"x6".

isaac Mar 18, 2019

I don't know, I used them in a newer silverado

ronald Mar 18, 2019

dwayne Mar 15, 2019

8 answers

I bought these speakers for an old work car I would upgrade to a better speaker

mike Mar 19, 2019

Love kenwood speakers all around these have great sound with stock deck or after would sound awsome!

theress Mar 19, 2019

I would probably go with something else. The sound quality wasn't that great if wanting a lot bass.

amy Mar 19, 2019

They do not have a lot of bass but they are a great full range speaker and I have been very happy with them.

glenmore Mar 19, 2019

These speakers should give adequate bass response, mine went into an '04 pt cruiser and delivered good bass for a relatively small driver.

kurt Mar 19, 2019

The bass is fair for a round speaker. Better then any others I have tried. However the 6x9 speakers sound alot better

robert Mar 19, 2019

I have mine in an 01 Xtreme SS and they sound great! No distortion and clean mid & highs. For bass I have a sub & amp so I'm not sure about the bass they produce. They sound good & clear with no distortion at all at any level.

armando Mar 18, 2019

The bass response may be slightly improved over the factory stereo, however if you are just looking for better bass you would be better off investing in an aftermarket amplifier and sub, or aftermarket speakers and an amp.

eric Mar 15, 2019

Wich will be a great tweeter for these speakers?

christian Dec 25, 2018

Are these simple to install in a 2005 Toyota Land Cruiser?

I think the Kenwood KFC ST01 tweeters would be the best match with those. They use the same PEI material and have similar power handling so should blend well. If you have any other questions before you place an order you can chat with or call one of our Product Advisors here: https://bit.ly/2QNxGQB --Cosmo

casey Jan 01, 2019 (Staff)

david Oct 26, 2018

If i put this brand on a amplifier.. Will they hold up??

Actually, David, I installed them in my Lexus, not my Land Cruiser.

gavin Oct 26, 2018

I would say that if you have even a little experience doing installation, then it isn't hard. I found some YouTube videos about removing the door panel, and it was easy after that. Make sure that you observe how to put the automatic door lock mechanism back in place. Also, when testing the new speakers, be aware that if the stick tweeter isn't plugged in, the new speaker won't work.

gavin Oct 26, 2018

Should be pretty easy. I installed it on my 1997 Nissan Sentra in about an hour. Then took me about a half hour to install it on my 1998 Honda Accord after the Sentra died.

derick Oct 26, 2018

big will Oct 02, 2018

Does this come from and back as well as left and right?

As long as the rms power doesn't put more power than what they are rated for you'll be fine

daniel Oct 02, 2018

brett Aug 02, 2018

Will these speakers fit my 2014 Volkswagen Jetta 1.8tsi without the fender audio system but with the cd changer?

Yes it does

robert Aug 08, 2018

what do you mean i need a better decryption

jayson Aug 08, 2018

malik Apr 16, 2018

I see some videos that you have to use the old frame of the speaker and weld the new speakers cables there is no other plug and play option?

I don't know mine were installed in a 2007 GMC Canyon they sound pretty good And bass seems to improve over time

clifford Apr 17, 2018

Not really sure what you are referring to but, the speakers are pretty universal. I would check online and see what other owners have done or get an idea of what you may run into.

enrique Apr 16, 2018

I used these speakers in my front doors. If you're using these for the doors, they'll fit perfectly.

michael Apr 16, 2018

leroy Apr 02, 2018

Is this only one side or will it come in two?

For my application on a 2000 Accord it was plug and play, the speakers fit into the stock mounts perfectly and the wires connected no problem (with the included wiring harness they gave me)

danielle Apr 02, 2018

When I installed mine Crutchfield supplied the speaker mounts and connector to make the install as easy as possible. Now I don't know the type of car your installing them in or where your getting them from, but if you haven't purchased them yet I recommend crutchfield.com.

robert Apr 02, 2018

emmit Mar 11, 2018

what is the difference between the 1666s and the 1665s?

It's two speakers--left and right.

don Mar 12, 2018

You will receive 2 speakers.....

jose Mar 11, 2018

dean Feb 10, 2018