This subwoofer helps transport you to the middle of a high-speed chase in a film or to a stadium seat at a thunderous concert. Boston's CS Sub10 uses a 100-watt amplifier to supply powerful, precise low frequencies with your movies and music. The 10" woofer delivers dynamic bass to give your system's sound a firm foundation. And Boston's exclusive signal-monitoring circuitry keeps audible distortion at bay, so the sound is clean and crisp.

Build a complete Classic Series speaker system with this sub, floor-standing front speakers, bookshelf speakers or satellite surround speakers, and a center channel speaker for high-impact home theater sound.

Product Highlights:

  • video-shielded
  • frequency response 32-150 Hz (±3dB)
  • 10" Deep Channel® Design graphite-injected polymer woofer
  • 100-watt RMS amplifier
  • BassTrac® circuitry eliminates distortion
  • continuously variable 40-180 Hz crossover
  • phase switch
  • line-level and unfiltered LFE inputs
  • 15-1/8"W x 16-1/8"H x 17-3/16"D
  • weight: 32 lbs.
  • warranty: 5 years (1 year for the amp)
  • Our 60-day money-back guarantee

Why add a powered subwoofer?

A powered subwoofer gives you bass you can feel as well as hear. Our customers love the depth and impact their subs add to music and movies. We hear comments like "it brings out sounds I didn't know existed in discs I've watched a million times." Powered subwoofers aren't just for big bass that rattles your picture frames; they can also deliver tight, accurate lows. If you haven't shopped for a powered sub in a while, you might be surprised at how small they get. Look for an ultra-compact model if you want to tuck your sub away under an end table or in a corner.

Boston Acoustics CS Sub10 Reviews

Average Customer Review:

17 reviews
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Boston Sub

Written By James, Festus,MO on Monday, March 28, 2011

Crutchfield Customer Review (What's this?)

My whole system has Boston Acoustics, The speakers are getting up there in age now but still sound as good as the day I bought them. I just added this sub as my amp in my old one from a different manufacturer was starting to fail.
Sounds really good, nice solid cabinet. Would be nice if the driver was a bit tighter for a more solid punch style bass as opposed to boom.


Written By BillC, Michigan on Thursday, March 10, 2011

Crutchfield Customer Review (What's this?)

You won't be disappointed with this sub. I paired this with an Onkyo receiver
and an older pair of Bose bookshelf speakers. It is an incredible sub. Once
you get it tuned in where you want it, you won't be disappointed. I've never been
sorry with anything I've bought from Cruthfield.

Boston Acoustics CS Sub10

Written By ScottM, Harrisburg,Pa. on Wednesday, February 16, 2011

Crutchfield Customer Review (What's this?)

I purchased this sub after reading the reviews,and i'm very satisfied with the
quality and sound...I had a Sony 250watt sub for about 6 years,and It died on me
recently.It was a little more punchy than the Boston,but it also had a larger
amp and two 10" drivers.That being said,The Boston unit is more than enough for
a small-mediun living space and has a great low tone.I would recommend this
product,for the price it can't be beat.

Boston Acoustics CS Sub10

Written By Bill, Oregon on Monday, February 14, 2011

Crutchfield Customer Review (What's this?)

We wanted to add some sounds to a second area in our house, so we bought two
Boston Acoustics CS 26 speakers, and we loved them. Then we bought the
sub-woofer to go along with them. Now, the speakers sound great and we're
really happy with the whole setup. The sub-woofer really fills the sound

Boston Acoustics CS Sub10

Written By small town, spfld, il on Wednesday, February 09, 2011

Crutchfield Customer Review (What's this?)

The Boston Acoustics sub was everything indicated by Levi, my sales consultant told
me. There is plenty of volume which i have hooked up to a Onkyo receiver and two
Boston Acoustics book shelf speakers. Excellent purchase...


Written By Tony, NJ on Tuesday, January 25, 2011

Crutchfield Customer Review (What's this?)

You can not get a better sub for the price! Its deep, its on point, it gets me in trouble with
my wife! I have it in a small living room coupled with klipsch quintets, IT SOUNDS
GREAT! I only have the it turned up half way and the whole 1st floor rumbles.. what an
addition to my system!! Good job Boston Acoustics finialy a great product at a decent

Great value!, Great sound!

Written By Ken P, Bennington Vt. on Tuesday, January 25, 2011

Crutchfield Customer Review (What's this?)

Great little sub, especially for the price. I listened to numerous others, at much higher
pricing, this unit held it's own and more. I would highly recommend this sub, and Boston
Acoustics in general. I've had a set of T830 towers for almost 20 years and they still
sound spectacular(although I had to replace the woofers because the surrounds had
dried out and cracked. I called their parts department, and they still carried the original
drivers in's that for a reliable company!!!!)
I'm completely sold on Boston Acoustics and I'm sure anyone would be happy with any
speaker from this series!

New experience

Written By LuisS, Lake Worth, FL on Tuesday, September 21, 2010

Crutchfield Customer Review (What's this?)

This subwoofer is not a low quality beginners component. It's a very good product with a
tight sound and lots of volume. There are new sounds I didn't hear before coming from
my CD's. My feeling is that the whole frequency has been enriched. I find myself
listening to my CD collection with a renewed interest. It's a new experience totally.

Not the best, not the worst

Written By ali, Woodbridge, VA on Saturday, October 10, 2009

Crutchfield Customer Review (What's this?)

The amount of bass to cost ratio is very proportionate with this sub. With that, the quality of the bass is smooth and awesome. It's like with anything else, more $ will get you more on most things. If you're on a budget for a sub, this is a good buy.

Great Deal

Written By Mike, Grand Junction, Colorado on Thursday, July 09, 2009

Crutchfield Customer Review (What's this?)

I bought this as an open box,and so got a price break on it, it looks and sounds great. For the money I don't think you can get a better sub. This is the first time I've bought Boston Acoustics, I will look at them again next time I need something. Crutchfield has been awesome, great prices and the best support.

Boston Acoustics CS Sub10

Written By bobby, Denver N.C. on Wednesday, February 04, 2009

Crutchfield Customer Review (What's this?)

The first sub arrived damaged but when it comes service crutchfield just can't be beat! They had a new one at my door in just a couple of days. I had originally wanted to get a polk sub but did not have the cash after getting a another great deal on the polk RTI bookself speakers so this sub was recomended by them and was also on sell. I got it hooked up through the LFE but it just did not impress me at all so I gave them a call and was told to try using a Y connection and the crossover in the sub itself. Worked great and with a little fine tuning sounds great. Not over powering just deep, smooth, rich tones for music and great impact for action/war movies. The finish is really nice too. Between the deal I got on the RTI's and thanks to the guys in the service dept. for this recommendation I made out like a bandit. Again I can't say enough about "all" the people I've spoke with at crutchfield. If you have a question they have a answer. They really know their stuff. Thanks guys. Here is a list of my gear. Yamaha RX-V 2300 reciever, Polk RTI 4's, CSI 5, FXI 3's and the Boston Acoustics CS Sub 10, Toshiba Regza 42" LCD, and a Panasonic DVD recorder.

Great deal

Written By Cal, Huntington Beach, CA on Tuesday, January 27, 2009

Crutchfield Customer Review (What's this?)

Decent power with crossover capability at a good price. This combined with solid product quality and good sound make it a great deal.

Boston Rules!

Written By todd, West fargo on Saturday, January 24, 2009

This subwoofer really impressed me.first its a 10" sub with only 100watts rms so i did'nt expect much from it.but when i hookded it up and turned it
on and played some music WOW!I had to turn it down it was shaking stuff on the walls.And I am not kidding.And boston sound quality for the money is fantasic with boston.For the price here at crutchfield this sub is a steal for it's output at this price.It hits like most competitors 300 watt 12" subs do.seriously!I'll Be buying the CS226B,the CS225C speakers to complete my home theater system I already have the DSi465's(in ceiling) for my surround speakers which are voice matched to the classic series speakers.THANKS BOSTON FOR A QUALITY PRODUCT AT A FAIR PRICE!

Super Sub!

Written By Gary, Marietta, GA on Sunday, December 14, 2008

Crutchfield Customer Review (What's this?)

Very smooth! A great addition to any surround system. Shakes the house with style and superior design.

Great CF Service

Written By Melvin, Plano, TX on Monday, December 08, 2008

This sub has great sound with excellent build quality and visual appeal. I would also like to add that Crutchfield did a great job of customer service. The first sub I ordered arrived damaged (appeared to be dropped from a high height), but CF immediately sent me out a replacement and had the original sub picked up from my home in no time with no hassle.

Awesome sub

Written By Tom, Pennsylvania on Sunday, December 07, 2008

Crutchfield Customer Review (What's this?)

The sound this sub produces is extremely clear and precise. I purchased
this to accompany a set of wall speakers for use in our bar, also purchased
from Crutchfield (Mirage I-6w's). After a day of install, my wife and I
couldn't believe the warm sounds produced and the wonderfull effects this
sub produced, along with the Mirage in wall speakers.

I would highly recommend this sub for such an application, or even a home
theater application.

Bravo to Crutchfield for great product selection.

Boston Acoustics CS Sub10

Written By Barry, Georgetown, KY on Wednesday, December 03, 2008

Crutchfield Customer Review (What's this?)

Awesome subwoofer!!!!! I just upgraded from a Polk PSW120 that I bought from Crutchfield 10yrs ago and I couldn't be happier with my upgrade. Thanks Crutchfield for another great sale and service!!

Hands-on research

What's in the box?

Download owner's manual

  • Powered subwoofer
  • 70" Power cord
  • Owner's Manual (English/ Spanish/ French)

Features and Specs

Enclosure Bass Reflex
Video Shielded Yes
Woofer Size (inches) 10
Woofer Composition Graphite inj poly
Firing Direction Down
Wireless No
Preamp-Level Inputs 3
Speaker-Level Inputs No
Speaker-Level Outputs No
Low-Pass Crossover Freq 40-180
High-Pass Crossover Freq N/A
Phase Switch Yes
Amplifier Output (watts) 100
Frequency Response 32-150 Hz
Height (inches) ---
Width (inches) ---
Depth (inches) ---
Weight ---
Speaker Parts Warranty 5 Yrs Sub/1 Yr Amp
Speaker Labor Warranty 5 Years
Amplifier Parts Warranty ---
Amplifier Labor Warranty ---

Product Research



BASSTRAC: The CS Sub 10's amplifier features BassTrac circuitry, a proprietary Boston Acoustics-designed technology which tracks the subwoofer's input signal and prevents the amplifier from being driven into audible distortion. Unlike conventional designs, BassTrac does not merely remove the signal peaks that cause distortion, instead it preserves the waveform's shape so the fidelity of the signal is maintained. Even the heaviest bass passages in movies or audio tracks will sound solid, rich, and full, without unwanted artifacts.

DCD (Deep Channel Design): The 10-inch driver used in the CS Sub 10 utilizes Boston Acoustics' DCD design. DCD is a deeply grooved pole plate that enables the voice coil to travel farther for greater output without bottoming out.

Down Firing: Since the CS Sub 10 is downward firing; the enclosure sits on four feet about 1 1/4" above the floor.

Auto-On Circuit: The CS Sub 10 has an Auto-On Circuit which can automatically turn the amplifier on when an audio signal is detected. It will automatically turn off after several minutes with no signal.


Volume Control: The rotary volume control is located on the rear of the subwoofer; use the volume control to balance the sub output with the other speakers in your audio system.

Phase Switch: The subwoofer's phase switch allows you to select 0° or 180°. If the bass sounds weak, muddy, or unclear toggling the phase control may strengthen the bass attack.

Crossover: The CS Sub 10 has a built-in 24dB/octave low-pass crossover, continuously variable from 40 Hz to 180 Hz. This adjusts the upper end of the sub's frequency range. The crossover is bypassed when the LFE input is used.


Line Level Inputs: The CS Sub 10 has three gold-plated RCA line level inputs, a stereo input and a mono LFE (Low Frequency Effects) channel input. The LFE output from a receiver is already crossed over so the sub's crossover is bypassed. When the stereo inputs are used the signal is routed to the CS Sub 10's crossover.

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.