Kenwood KSC-SW11

Compact powered subwoofer (New stock)

Item #: 113KSCSW11

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24 Reviews

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Big bass in a compact package

Kenwood's KSC-SW11 powered subwoofer might look small, but it delivers impressive bass. This little powerhouse will fit under a seat in most vehicles, where it'll produce low-frequency response equal to that of a larger subwoofer in your trunk. It offers a great solution for those who want to reinforce the bass in their system without taking up a lot of space.

Kenwood KSC-11 compact powered subwoofer

This tiny powered subwoofer can fit in many tight spaces.

Big woofer, rigid chassis

Kenwood gives you the biggest bang possible by stuffing an 8-1/4" x 5-1/8" woofer into this enclosure. The rigid aluminum enclosure eliminates rattles, while the durable built-in amplifier feeds the speaker 75 watts RMS. Kenwood throws in a wired remote, so you can control the bass from the driver's seat. A wiring harness and mounting brackets are also included.

Product Highlights:

  • compact powered subwoofer
  • aluminum enclosure with 8-1/4" x 5-1/8" sub
  • built-in amplifier: 75 watts RMS power (150 watts maximum)
  • wired remote for control over:
    • volume level
    • variable low-pass crossover (50-125 Hz)
    • selectable phase control (0°, 180°)
  • power/ground wiring harness
  • preamp- (RCA) and speaker-level inputs
  • frequency response: 35-125 Hz
  • dimensions: 11"W x 2-3/4"H x 7-1/2"D
  • warranty: 1 year
  • Our 60-day money-back guarantee

Who needs a powered subwoofer?

To produce bass, you need a sub, an enclosure, and an amplifier, and it can be little tricky to match them all up. A powered sub eliminates all the hassle, as the manufacturer designs the enclosure to house the sub and amp together. This all-in-one solution is especially useful in smaller vehicles, where there's no room to mount a separate amp, or in any vehicle where you need every bit of cargo space. Powered subs range from small, flat boxes that fit under your seat to larger boxes that go in your trunk.

Hands-on research

What's in the box?

Download owner's manual

  • Powered subwoofer
  • Wired remote control with attached 16.4' cord (has 6-conductor RJ-25 plug on the end)
  • 14' Speaker-level input cable (male stereo RCA jacks on one end and speaker wire with bullet connectors on the other)
  • 16.4' Power harness
  • Cable security bar
  • Adhesive backed hook and loop fastener (1-1/2" x 7/8")
  • 2 Mounting brackets
  • Four 5/8" Self-tapping screws
  • Four M4 x 6mm Machine screws
  • Two M3 x 8mm Machine screws
  • Instruction manual (English/ French/ German/ Dutch/ Italian/ Spanish/ Portuguese/ Russian)
  • Warranty information

Features and Specs

Enclosure Type Sealed
Finish Material Metal/Plastic
Grille Metal
Connector Type RCA, Molex
Bi-amp Inputs No
Woofer Size (inches) 5x8
Woofer Material N/A
Passive Radiator ---
Width 11"
Height 2-3/4"
Depth 7-1/2"
Second Depth N/A
Parts Warranty 1 Year
Labor Warranty 1 Year
Frequency Response 35-125
Amplifier Power (RMS) 75 watts
Maximum Wattage 150 watts
Sensitivity 110 dB
Impedance ---
Second Voice Coil Impedance ---
Crossover Point 50-125

Product Research


Product Overview: The KSC-SW11 amplified subwoofer features a built-in amp (75 watts RMS, 150 watts peak) and an oval woofer (8-1/4" x 5-1/8"), housed in a rugged, compact enclosure.

Wired Remote Control: The wired remote control provides fingertip control over your low frequencies. You can adjust the volume and crossover point (50-125 Hz), plus switch the phase from 0° to 180°. The remote control can be mounted using the supplied adhesive hook and loop fastener. The sub can be used without the remote, but the volume, crossover point, and phase will all revert to the default values.

Note: There are no controls on the subwoofer.

Mounting Options: The brackets can be mounted to either the sides or the ends of the enclosure. They add approximately 1-1/8" to the width or length, and 1/8" to the height.

Signal Input: The female RCA inputs on the included harness can be used with a line level or speaker level signal. A 14' speaker-level input extension cable is also included (male stereo RCA jacks on one end and speaker wire with bullet connectors on the other).

Wiring Harness: The included wiring harness covers power, ground, remote turn-on, and signal input. The wire length varies by function:

  • Ground: 58"
  • Signal Input: 26" (terminated with female RCA jacks)
  • Power: 16.4'
  • Remote Turn-on: 16.4'

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Kenwood KSC-SW11 Reviews

Average Customer Review:

24 reviews
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Very Nice!

Written By digital312, Chicago, IL on Sunday, March 22, 2015

Crutchfield Customer Review (What's this?)

Installed in my 2004 Scion Xa. Fit perfectly under passenger seat. Took seat out of car to be able to cleanly run the wires and was able to come out from under the carpeting next to the heating/cooling duct under seat. Secured it down with velcro and ran remote control to my glove box. Have it hooked up to the rca sub out of my Pioneer DEH-X9600BHS, set the remote on the Kenwood powered sub to 80hz and volume half way as a starting point and adjusted subwoofer out settings on my head unit. All I can say at this point is WOW! fills in the low end nicely. I was not looking to rattle my rearview mirrors just looking to fill in the lacking bass from my 6.5" door speakers and this works fantastic!

Pros: small, compact, powerful, easy to adjust settings on included remote

Cons: none really

Kenwood Compact Subwoofer

Written By Mark, California on Sunday, February 15, 2015

Crutchfield Customer Review (What's this?)

Great little subwoofer with outstanding output and tune-ability. Really brought my stereo alive in my single cab pickup.

Pros: Relatively compact, good bass output and may fit under some seats. Works extremely well with my Pioneer X2600BT head unit.

Cons: Was a tad taller than I anticipated requiring me to put it in a new location.

Great in 2014 Traverse

Written By Gman, Michigan on Wednesday, January 28, 2015

Installed this in my 2014 Chevy Traverse on Saturday. Since the floor heat ducts are under the seats and there was no room to mount it there it was a challenge to find a spot that It would not interfere with cargo space or passenger entry exit.. I found a great spot after a little digging and it sounds great and is complete hidden with no interior modifications. The install instructions were simple. The most difficult part of the install was locating an ignition only power lead for the blue wire.

Pros: Great sound, fairly simple install.

Cons: None so far.

Great little sub

Written By Mike, Florida on Wednesday, December 31, 2014

Crutchfield Customer Review (What's this?)

This little powered sub fits perfectly under a seat in my 2009 Ford Ranger. It took longer than I thought to install, but I did remove the drivers seat for more room wiring into the rear speakers and pulling trim for a professional look. Also after 2-3 hours the no see-ums mounted a massive attack on my legs, so I did this over a 2 day period. I couldn't find a fuse or relay for the power with ignition in the on position, so it's straight wired to the battery It sounds amazing in the small cab. Wife got me the new AC/DC, Nickleback, and Little Big Town cd's for Christmas and they all sound great. My daughter had to put in one of her hip-hop cd's, and I gotta admit even it didn't sound as awful as normal. This little sub is worth the money and time to install.

Pros: Sounds great. Always go with a top name brand

Cons: None

Powered sub woofer

Written By Anonymous, Clarksville Ar, 72830 on Friday, December 26, 2014

Crutchfield Customer Review (What's this?)

Christmas present for my husband he loves it

Pros: Made my husband happy

Cons: None


Written By Bill_Audio_Expert_You're_Nothing, Pacifica, Ca on Tuesday, September 09, 2014

My head unit is a Naka-NA780. I recommend using a low level out. From experience I can say that the hi-outs don't offer the same level of control or low hz sensitivity. Heck using high level outs is akin to using buckshot when a .22 will not only be more cost effective but more efficient and efficiency is what we're talking about here folks. This powered sub provides an abundance of usable bass across a wide range of frequency. Granted it won't slap like 400ws pushing 10" subs but what it provides is adequate. Listening to hip hop brings a grin to my face. It can handle it. Classic rock works well too. Rory Gallagher has beats!!!!!? Proper installation is vital. As with anything execution is key. Conceivably you can rig up a plug and connect it to a cigarette lighter. I urge you to ditch the supplied 14ga 12vdc power cable and use copper 10ga routed to the battery. Mount it to the floor or someplace secure. This amp is worth the trouble. A quality component that should last you for years.

Pros: Compact size Base response Remote Control Length of cables is excellent. You could mount it in the trunk

Cons: Supplied power cable is horrible. Use some decent copper and run it to the battery.

Kenwood KSC-SW11

Written By Greg, Calgary, AB on Friday, August 29, 2014

For NC Miatas (at least NC1s) , this won't fit under the seats but will fit on the panel behind the seat if you can afford to give up a small amount of seat travel. I'm 5'10" so this fits with no sacrifice for me.

I bought this to fill out the factory Bose amp and speakers running off an AVIC-8000NEX head unit and it has exceeded my expectations. It's as close to ideal for this car as you can get as long as you can give up an inch or two of seat travel. Installation was straightforward. I'm running off the RCAs from the Pioneer and you don't even really need the remote if the head unit has good sub controls. No rattles. Plenty powerful enough to be effective top down at highway speed.

Pros: Easy installation, good sound, good value.

Cons: None that are apparent assuming the long term performance holds up.

Small sub for small car

Written By Ed M., Loveland on Thursday, August 07, 2014

Crutchfield Customer Review (What's this?)

Love this little sub, compact and easy to work with. Plenty of sound for a convertible with the top down as well as top up.

Pros: Compact, great low end, easy to install, on the fly adjustemnt.

Cons: Bolt down screws long quite long enough to reach through carpet and basemat.

great little subwoofer

Written By james mc, tallahassee, fl on Thursday, June 26, 2014

Crutchfield Customer Review (What's this?)

i installed this unit in my mazda Miata. plenty of lower end in such a small cabin. managed to get it under the passenger seat.

Pros: lots of sound for the price. easy to install.

Kenwood KSC-SW11

Written By Anonymous, Vernal, UT on Tuesday, June 10, 2014

Crutchfield Customer Review (What's this?)

This was exactly what I was looking for. Big sound in a small package. Very happy with this item.

Pros: Compact, Sounds Great

Cons: Maybe different mounting options

Kenwood KSC-SW11 Powered Subwoofer

Written By David C., Lafayette, Colorado, USA on Saturday, May 31, 2014

Crutchfield Customer Review (What's this?)

This little powered sub packs a lot of bass into a small package. I was not looking to rattle the windows, but you can definitely feel the music if you crank this up. It makes for a much more enjoyable listening experience for a variety of music styles at any volume level. This was easy to install, about at the same difficulty level as putting in a new head unit. The great thing about this compared with other powered subs is its smaller size without sacrificing sound quality, and the ability to attach the power line to your internal fuse box rather than going through the firewall to connect directly to the battery. I originally intended this to go underneath the drivers seat in my 1997 Honda CR-V but it did not quite fit there - the wire on the seat adjustment lever sits too low to fit this underneath. So, I installed it on the floor in between the two front seats and just in front of the center dash console. Kind of unusual to put a sub in that spot where it's visible in the front of the vehicle, but it sounds great to me and that was the best spot for it in a CR-V. I definitely recommend this subwoofer - you won't go wrong if you're looking to punch up the bass in a compact, affordable package.

Pros: Straightforward installation, you can attach power line to internal fuse box rather than going through firewall to battery, great bass response for a small package.

Cons: Did not fit under my seat in 1997 Honda CR-V - wire for seat adjustment sits too low.

Sounded great in my wrangler.

Written By Brian, Granbury, Texas on Monday, May 26, 2014

Easy to install, sounded great till it died. Just bought another one from a different vendor, as it was cheaper. No complaints about Crutchfield... They did a good job of getting it to me.

exceeds expectations!

Written By wolf, pittsburgh on Monday, May 05, 2014

Crutchfield Customer Review (What's this?)

I installed this in a subaru legacy after adding component speakers, a 50x4 watt rms amp, and door dampeners. Most other under seats were too large. I expected the small size to offer little bass, but it offers plenty. It won't shake your whole ride, but it's more than enough bump for rock/metal/country/classical/etc. with the gain at 50%.

The build is sturdy metal, and it comes with enough cable to mount the unit in a trunk or SUV bed. Fuse is included. Power is supplied from your fuse box, rather than batter directly.

Pros: Sturdy, lows are clean and loud. Remote control is nice. Mounted it next to my seat. I do a lot of on the fly adjustments. I'd probably go crazy without it.

Cons: This "fills out" sound. If you want huge bass for hiphop/bounce/etc, this will flub out on you. I tried pushing it in that direction for fun. Won't be trying it again.

Kenwood KSC-SW11

Written By Rebecca, Hamptonville, NC on Wednesday, April 09, 2014

Crutchfield Customer Review (What's this?)

The sub is a good deal for the price and for what it is. But personally I didnt think it was enough bass so I bought another one to put under the passenger seat. So with the two of them it sounds decent. I did not want a box in my trunk area of my SUV taking up any space, so this was my best option.

Pros: Can fit under my seats, not too expensive, sounds decent for how small it is

Nice adder

Written By Jeff, New Orleans on Saturday, March 29, 2014

Crutchfield Customer Review (What's this?)

Probably did need this sub but I'm glad I found it and purchased it. Compact, clean install, and really tight bass and sound pressure level.

Pros: Small and clean and powerful

Cons: cant think of any cons

Sounds great and takes up almost no room

Written By frank, Fort Worth,TX on Monday, March 17, 2014

Crutchfield Customer Review (What's this?)

This is very close to the smallest i have found for my Ranger single cab, This thing puts out more bass than i need in the small cab, it was also super easy to install, took about 3 hours to install it (pulled carpet and seat to get the clean "factory" install look,) very happy with the outcome. I dont know if i would put it in a trunk but would use one in a larger truck no problem.

Pros: Super Small, insalled easy, and puts down plenty of bass in small space

Cons: Not enough bass for every vehicle or air space but beyond enough for small areas

Good Thump

Written By TerryG, Oklahoma on Saturday, February 08, 2014

Crutchfield Customer Review (What's this?)

Easy to install. Its my first sub and its a very nice compliment to my system. It wont break windows but the sound is great.

Pros: easy to install, great sound.

Cons: Dont expect it to annoy people at stoplights.

Kenwood KSC-SW11

Written By John H., Fleming Island, FL on Tuesday, December 17, 2013

Crutchfield Customer Review (What's this?)

I am using this in a 2000 Porsche 911 Cabriolet. Bought specifically for the small size - I have paired it with a Kenwood DDX370 DVD head unit and I am using the stock speakers. It sounds great. The remote allows me to adjust the base easily depending on if the top is up or down.

Pros: Compact size - good sound in a small interior.

Cons: None

Great powered sub

Written By Tomer, San Jose, CA on Monday, December 09, 2013

I had installed a new Sony Mex-3100p and some speakers in a 2011 Rav4. It sounded pretty muddy. I then added the Kenwood KSC-SW11 and removed the low frequency sounds from the door speakers and now the stereo sounds fantastic.

Pros: Small- fits under back seat. Great sound.

Cons: Needed to buy additional 16 gauge and 12 gauge wire to reach the sub under the back seat. Need to buy separate RCA cables (I my case 16 feet long)

Big in a small place

Written By DP, Carson City, NV on Tuesday, October 15, 2013

Crutchfield Customer Review (What's this?)

Fresh install, so ask me in a year. However, I had a challenge - get some bass into a very small, high-performance Italian super-car with little space for such things. I might have used the Sound Ordnance box, but it was too wide. This Kenwood fit the bill for size, so it was in. Hooked up with provided parts and cables. Lit up and filled up the car on the first try. I'm not expecting, nor did I want, a big thumper. This car will be playing a wide range of music favored by those of us that grew up on the 60's and 70's, and this unit has made that possible.

Pros: Small size, very well constructed, optional input choices, complete kit, remote control includes volume, cutoff, and reverse polarity switch

Cons: The remote control has the cable entering from the bottom. For my application I brought the control into a tiny glove box, meaning that the control is upside down to the operator. No biggie, as it's bog simple, and once set is unlikely to be fiddled with.

Kenwood KSC-SW11

Written By bill, rapid city S.D. on Thursday, October 10, 2013

Crutchfield Customer Review (What's this?)

bought the kdc sw11 powered amp and the kdc x997 head unit both by Kenwwood and am very pleased with both. The clairity is amazing and this is with the stock speakers.going to change to new speakers and will then decide if i need en external amp

Great compact sub

Written By lawgibbs, Bakersfield, CA on Thursday, July 25, 2013

Crutchfield Customer Review (What's this?)

Wonderful and compact self-powered sub is just what you need to add that bass to your music. This amp is fantastic unless you are a hip-hop fan and want it to overpower the music completely. Provides great low end to all forms of music.

Amazed I Could Hear This

Written By lrapturel, Indianapolis on Saturday, May 11, 2013

Very impressed with the bass out of this because when I took it out of the box I realized just how small this thing is. I was thinking I was barley going to hear it but I was shocked. Don't get me wrong, I had to turn it up all the way to get good bass but I was impressed. The car was a hatchback and we just set it in the back.

Pros: Great bass.

Cons: A little more power would be nice.

Great sound in a small package

Written By Mark, Indianapolis IN on Saturday, April 27, 2013

I have been very satisfied with the sound quality and its small size is a big plus. You will need some bullet connectors to tie into the power on wire. You will also need the bullet connectors and some way to connect to your battery. I was able to fine everything I needed at autozone. It does not come with RCA wires but it will tie into your speaker wires if you go that way. All in all a great way to finish off your aftermarket set up or your sub par factory set up.

Pros: Small size, great sound, easy hook up to the sub, and remote for easy adjusting

Cons: Will need to get some hardware and RCA cables.

Get everything you’ll need to enjoy your new Kenwood KSC-SW11

Dynamat helps reduce ambient road noise and your vehicle's "rattles," making it easier for you to hear your music better. Easy to install.
Get more info about having your new sub put in by a qualified professional in your area.
If you are using the pre amp inputs on this powered sub, better quality cables will improve the sound.
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