Polk Audio PSW108

Powered subwoofer

Item #: 107PSW108

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66 Reviews

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Add some boom to your room

Add serious low-frequency impact to your movies and music with Polk's PSW108. This powered subwoofer delivers solid, accurate bass thanks to its 50-watt RMS amp and 10" woofer. The cabinet is constructed from non-resonant MDF, and is reinforced with internal bracing for superior bass clarity. The PSW108 is a great way to round out a home theater system or add depth to your stereo music without breaking the bank.

Flexible inputs and controls

Polk makes it easy to integrate the PSW108 with your existing system. You can hook your receiver up to the sub either through the line-level or the speaker-level connections. The continuously variable low-pass crossover lets you dial in the sound to match the PSW108 to the rest of your speakers. And a phase switch lets you tweak the sub's output for more precise bass response.

Product Highlights:

  • bass-reflex (ported) enclosure
  • 50-watt RMS amplifier
  • 10" front-firing driver
  • Dynamic Balance polymer composite cone
  • frequency response (-3dB): 40-160 Hz
  • crossover: continuously variable from 80-160 Hz
  • phase switch for more powerful and precise bass output
  • auto on/off
  • speaker-level and line-level inputs; speaker-level output
  • black oak vinyl finish
  • removable grille included
  • 14"W x 14-7/16"H x 16-1/8"D
  • warranty: 5 years woofer, 3 years amplifier
  • 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.

Polk Audio PSW108 Reviews

Average Customer Review:

66 reviews
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7.2 Surround

Written By Anonymous, North Carolina on Tuesday, November 17, 2015

Crutchfield Customer Review (What's this?)

I have the (255C-RT) and in walls (RC55i's) and 2 Polk Subs (PSW 108 and 111) for a 7.2 effect. It's a great combo for the size of room I have!

Polk Sub

Written By Ryan, Spokane on Thursday, November 05, 2015

Crutchfield Customer Review (What's this?)

Great Product, Great Price

More than I expected

Written By Bradley, Texas on Monday, October 26, 2015

Crutchfield Customer Review (What's this?)

I added this unit to my 'polk' home theater set up. Driven by the Onkyo TX-NR737. Deeps are clear and solid. Provides good rumble to accompanying mids from center speaker. Size surprised me (to the positive), feels 'bigger' than advertised. Solid and well built. Could be an end table in a crunch, but probably not the best place to put your drink :-)

Pros: Fit and feel, "rumble", price, sound.

Cons: None so far

Small but forceful

Written By Mark, Georgia on Saturday, September 26, 2015

Crutchfield Customer Review (What's this?)

Over the last year I've been building up a small system in my home office. I hadn't spun a record in a decade and a Saturday spent wandering used record stores with a friends inspired me to dig out an old turntable and watch the wobble of old vinyl myself.

I tried to resurrect some old gear but it had reached it's time, so started a small purchasing adventure, all through Crutchfield. A new NAD CD player, new Cambridge Audio amp and some small Polk bookshelf speakers had me happy for a year. But there was something missing, that little thump of sound that makes you feel as much as hear. I bit the proverbial bullet and ordered this basic subwoofer.

My first unit was defective, but the customer service here at Crutchfield had a new one on its way within hours of my call - I've been buying stuff from them for nearly 30 years and they have never failed me.

On to the subwoofer itself ... it's small, relatively inexpensive and I was just looking for a little life at the low-end. I don't crank the volume up as I'm in a small space and this fits the bill perfectly. It could probably rattle a few windows, but the way I'm using it is just to give a little bit of bass response. What I love most is the tightness of the sound - it's there, it's present, it's forceful, but it isn't all booming and thumping. It's a purposeful sound that, I think, brings the musicality out as the performers and engineers intended it.

Exceedingly happy with the purchase.

Pros: Tight, forceful sound that isn't overwhelming or boomy.

Cons: First one (an open box) was defective, but the customer service from Crutchfield was excellent, getting me a new one right away.

Polk PSW 108 Subwoofer

Written By BW, West Virginia on Sunday, July 19, 2015

Crutchfield Customer Review (What's this?)

Polk makes great products. I was a bit concerned when I purchased this product only because I have an older "system" and I was't sure if it would work. It worked with my system as soon as it go plugged in with simple instructions. Even better the product was shipped and I had it in 3 days. Wow was I surprised. I have purchased from Crutchfield before and they never fail to give the best service for their customers. Thank you Crutchfield.

Pros: Excellent Polk product with excellent sound. Easy to connect and up and running in no time.

Cons: None.

Garage boost

Written By Anonymous, California on Sunday, July 12, 2015

Crutchfield Customer Review (What's this?)

Great for garage music boost

Proven Quality and Performance

Written By Pat, Arizona on Wednesday, June 17, 2015

I have a PSW10 that is over 10 years old. It is used in an all Polk surround system with TSi100 front, center, and rear speakers powered by an Onkyo receiver. This subwoofer has performed very well for the entire time, and is more than powerful enough for a 16 by 16 foot living room. We have never had it a maximum volume, and will vibrate furniture during loud LFE sections of movies with clear and unmuffled bass. This sub is a huge value, and if mine failed I would buy another.

Pros: Quality Performance

Cons: None

killer bass

Written By Frank A, Auburn CA on Sunday, April 05, 2015

I recently purchased for under 100 bucks. Extremely happy sounds awesome in my apartment. For only 50 watts it beats hard. Would definitely recommend.

Pros: Small size great punch.

Polk Audio PSW108 for living room

Written By Julian, Wash, DC on Monday, March 02, 2015

Crutchfield Customer Review (What's this?)

Great sub to go with my home system. Easy to install and is a nice compliment to my infinity speaks and (2003) onkyo receiver

Polk sub

Written By trim, Elkhart, IL on Monday, December 15, 2014

Crutchfield Customer Review (What's this?)

Awesome sub....great sound!

Pros: All good

Cons: None so far

excellent purchase

Written By suzy, Pennsylvania on Sunday, December 14, 2014

Crutchfield Customer Review (What's this?)

This product has great sound quality and is a wonderful addition to our newly installed Home theater system. We love the quality, easy install, and price for the product.

Pros: price, quality, sound

Polk Audio PSW108

Written By Avanti, Georgia on Saturday, December 13, 2014

Crutchfield Customer Review (What's this?)

Hi Crutchfield and viewing customers. I would like to first say Happy Holidays to all. MY resent purchase of the Pork Audio powered sub speakers (two). of them The price was great. Smiling.. Most of all the sound quality is everything I wanted to have. The casing of the box is appealing and the size for the sound of Bass is shocking.. Delivery of Bass is what i wanted and is what I've received with these Subwoofers.... A little secret.. I exchanged both of my Bose subs for these Pork Audio subs. If you don't tell i want tell. Have a great Evening. Thanks again to Crutchfield..

Pros: All...

Cons: None..

Do not let the price fool you

Written By Steeda46, Leander, TX on Monday, December 08, 2014

Do not let the price fool you. I have had this subwoofer for a few years and recently decided to use it again in lieu of purchasing a new one for my home theater - very happy I save the money. This unit delivers awesome sound and keeps up with the fast paced movies.

Perfect for the DIY'er - 5.2 Ch System

Written By JimBo, Nevada on Saturday, November 22, 2014

Crutchfield Customer Review (What's this?)

Great product for the money. I have this hooked up to an Onkyo 5.2 ch surround in my living room which is all tile floors (ceiling speakers @ 10 ft). Sound is perfect with little to no reverb. I combined this sub with PolkRC 80i (2 Fronts), RC60i (2 Rear) and an MC80 (Center). Great "bang for the buck". Recommend this to anyone who is looking for a level right below theatre HD quality.

Good subwoofer for small systems and rooms

Written By djEric, California on Monday, November 10, 2014

Crutchfield Customer Review (What's this?)

This subwoofer works well with my small AudioEngine speakers and desktop computer -- really gives some bottom end that desktop speakers just can't provide. I chose a smaller system for my desktop because if you are working you just don't need to be knocked over with sound. With this combo, you can keep volume levels low and still get good fidelity.

Pros: Plugs right in, good fit, great sound for its size. Not a gamer, but sound holds up fine if you want to crank it up for movies or music videos.

Cons: might be a little meek in thunder dept, you will need something bigger for a larger room.

Packs a Punch

Written By Anonymous, Tampa, FL on Sunday, October 12, 2014

Crutchfield Customer Review (What's this?)

Picked this powered subwoofer out after my current Sony sub died. Great sound for a little speaker at a great price.

Great Sub

Written By RustyF, Atlanta, GA on Friday, August 29, 2014

Crutchfield Customer Review (What's this?)

This replaced a worn out infinity 50 watt sub in a bedroom. Simple installation & setup in 5.1 system was simple.

Pros: Lots of rumble out of a small unit. This sub would work well in a larger room too. The sub this replaced was down firing and I like to front facing speaker much more. So far I am very pleased with this sub.

Cons: The speaker is lite, not sure if this will last as long as the infinity that was 13 years old. The unit was delivered in a very damaged box and had some cosmetic damage. This was done by UPS shipping and Crutchfield worked with me and provide 2 acceptable solutions.

Polk Subwoffer

Written By Arthur, Syracuse on Monday, August 11, 2014

Crutchfield Customer Review (What's this?)

Great sub woofer, good value, easy to setup

Pros: great sound,

Cons: no bananna jacks

Excellent replacement

Written By John, Penna. on Monday, July 28, 2014

Crutchfield Customer Review (What's this?)

This SW replaced an older Kennwood lost due to water damage and works exceptionally well

Pros: Easy to set up, great bass

Cons: None

Affordable Polk Quality

Written By Ron D., Union, NJ on Saturday, July 05, 2014

Crutchfield Customer Review (What's this?)

This little sub is now part of a 5.1 A/V system in my bedroom. Amazing output for its size. I'm a long-time fan of Polk Audio, and this speaker does not disappoint. Excellent value.

Pros: Low price, Polk quality

Cons: None

Here comes the boom

Written By Preachkevin, Manassas, Va on Friday, June 27, 2014

Crutchfield Customer Review (What's this?)

Great value for the money, If you need a sub for a surround sound system this will work fine

Pros: Great value and excellent sound

Cons: For those who have no neighbors and no glass in the house it will not shake the entire house, not enough power, yet this sub adds exceptional bass and bottom end to movies and in house surround sound system

Great value

Written By Greg K., Greensboro, NC on Tuesday, June 10, 2014

Crutchfield Customer Review (What's this?)

Great sub woofer at a great price. Easy installation. Added to 5 speaker system and now movies are SO much better!

Pros: Price. Free shipping (received it very quick.) Easy setup.

Cons: None that I have found.

Great Purchase

Written By Rich, Green Bay, WI on Tuesday, April 08, 2014

Crutchfield Customer Review (What's this?)


Pros: Sounds Great easy set up

Cons: None

Awesome subwoofer

Written By Mike, Kearney, MO on Monday, April 07, 2014

Crutchfield Customer Review (What's this?)

Incredible amount of bass can sound like a mega car audio system I am very impressed with the quality all around and the deep bass

Pros: Awesome sub for the money

Cons: None

Wonderful Sub

Written By Mike, Rockford, IL. on Wednesday, March 26, 2014

Crutchfield Customer Review (What's this?)

I was able to purchase this product from Crutchfield for an unbelievable price and it arrived in just a day. I was pleased to be able to refer to Crutchfield's information on the use of sub's within a Home Theater system as this assisted in my purchase. This sub is excellent. Very tight bass and sounds great with movies as well as classic rock when I want to relax to some music. I have a pair of vintage floor standing Advent front speakers and this Polk sub takes on those low frequencies allowing my Advents to sound brand new. I love this sub and you can't beat Polk for warranty with a five year warranty on a speaker. I am purchasing an additional one as well.

Pros: Extremely affordable, tight, accurate bass, easy set up

Cons: I could sure use a line out on the back of the sub in order to "chain" a second sub to this one.

Installed easily

Written By Jeff, Boulder, CO on Tuesday, March 25, 2014

Crutchfield Customer Review (What's this?)

Bought this as a simple add on to a Polk system that already had 5 speakers but no sub. This seems to put out just enough to get the lower bass without overpowering the room. Haven't not yet explored some higher bass settings.

Pros: Easy to Install. Great Price.


Written By Dalco, Dallas,TX on Monday, March 24, 2014

Crutchfield Customer Review (What's this?)

Very nice! The sub is great! Helped out my sound to my Onkyo reciever. Movies and music sound great! Good buy and bang for your buck! You don`t need to drop $200 plus on a quality sub!

Pros: Quality, Performance, Sound, Ajustable knobs

Cons: None!


Written By Cyco, Deer Park, NY on Sunday, March 23, 2014

Crutchfield Customer Review (What's this?)

Totally Blown Away, Polk Audio has never let me down. Beyond what was expected.

Pros: Quality, Performance, Style

Cons: None!!!!

Great Sound

Written By Scott, Pittsburgh, PA on Friday, March 14, 2014

Crutchfield Customer Review (What's this?)

Great sound and enhances other Polk Speakers! Huge upgrade from my very OLD Yamaha sub.

Pros: Great Sound, Great Look, easy to set up.

Cons: No sub wire to connect to reciever. Not a big deal except requires a Y Plug.

polk audio psw108

Written By doug, orange co. ny on Tuesday, March 11, 2014

Crutchfield Customer Review (What's this?)

good bass. People at Crutchfield were great , very helpful. Was here in two days just has they said it would .

Pros: sound and price just right

Cons: none


Written By Hurgruk, Arkansas on Saturday, March 08, 2014

Crutchfield Customer Review (What's this?)

Great product!! & Well protected during shipping

Pros: Small enough that it fits any room & handles any load i send to it

Cons: none

Great Value

Written By great basic sub, Las Vegas on Friday, March 07, 2014

Crutchfield Customer Review (What's this?)

Very good value basic sub

Pros: lots of power when using with a smaller set of satellite of bookshelf speakers

Cons: None thus far

Great value

Written By Fast Eddy, Ogden,UT on Wednesday, March 05, 2014

Crutchfield Customer Review (What's this?)

Great sound, good construction & packaging

Pros: Arrived in factory condition, looks great. Great bass, yet never sounds muddy. Has been great for music and movies. Works surprisingly well in a 19' x 29' room considering it's modest power.

Cons: None

Excellent product

Written By s.s., Austin, TX on Wednesday, March 05, 2014

Crutchfield Customer Review (What's this?)

Filled my vaulted ceiling living room with sound I had never experienced before.

Pros: Everything was as promised.

Cons: None.

great little sub.

Written By ronc, coffeyville,ks on Sunday, March 02, 2014

Crutchfield Customer Review (What's this?)

great sub plenty of bass and can't beat the price.

Pros: low cost high quality

Cons: none

Love it! Great price great sound!

Written By Aaron, New Albany, OH on Tuesday, February 25, 2014

Crutchfield Customer Review (What's this?)

I love this sub! I was looking for something inexpensive that would provide some great bass for movies and music. I already have Polk audio in wall and in ceiling speakers so this was the perfect addition.

Pros: Low cost Easy setup Good bass

Cons: None yet

Polk PSW108 Subwoofer Does the Trick

Written By Hal H., Columbus, OH on Monday, February 24, 2014

Crutchfield Customer Review (What's this?)

After purchasing a pair of Polk TSi 300 floor standing speakers (which have a decent sound on their own) a year ago, I wanted something that would round out my surround sound system and add just that extra base in a small living room. The PSW108 added just enough to enhance both the surround sound as well as standard stereo music, without a major $ investment on my part. It makes the system sound great in a small space and does not overwhelm the base. If I ever move the system to the larger room, I'll try the PSW108 first but may need to upgrade to a higher wattage sub. However for the space I have right now, it's perfect.

As always, Crutchfield's customer service was exceptional helping me navigate the purchase using 4 different gift cards. I liked the free shipping and having the sub delivered to my doorstep in just 2 1/2 business days.

Pros: More than enough power for a small space.

Cons: I wish the Polk user manual was a little more detailed.

Polk Audio PSW108

Written By Anonymous, Cincinnati, Ohio on Monday, February 24, 2014

Crutchfield Customer Review (What's this?)

I am pleased with the quality of bass I added to my system from this affordable product. I struggled with spending more money and am very happy I didn't.


Written By TheRock, NJ on Saturday, February 22, 2014

Crutchfield Customer Review (What's this?)

Bought this to create a 2.1 on a basement TV. The sound is excellent for this price. Output is clear with distortion. All adjustments required are on the unit to calibrate it.

Pros: Controls, connection options

Cons: Enclosure size a bit on the large side

Polk Audio PSW108

Written By Anonymous, Wilson, NC on Saturday, February 22, 2014

Crutchfield Customer Review (What's this?)

Great subwoofer at a very good price. Can't imagine getting more bass for your buck than this! Really made a difference in the overall sound quality for my home theater system.

Outstanding product

Written By Anonymous, NM on Thursday, February 20, 2014

Crutchfield Customer Review (What's this?)

Easy plug n play sub to complete my home theater system. I have a open living room that flows into a open dining and kitchen area. Im able to watch movies, sports, and listen to music in all areas and the sub fills the house with awesome sound. Wife isnt very happy but so far its been excellent for movies and all types of music. I listen to hard rock and old school rap and I have yet to exceed its capabilities. Very pleased.

Pros: "Polk", easy set up, and price

Cons: None so far

Awesome sound

Written By Bob, Fort Worth, TX. on Wednesday, February 19, 2014

Crutchfield Customer Review (What's this?)

This woofer has great sound and has good controls.

Polk Audio PSW108

Written By Anonymous, Burnsville, N.C. on Sunday, February 16, 2014

Crutchfield Customer Review (What's this?)

Great subwoofer completing the RM87 system. Couldn't be happier.

Polk Audio PSW 108

Written By Joe Brewer, Troutville Va. on Thursday, February 13, 2014

Crutchfield Customer Review (What's this?)

Very nice sub,I was looking for deep rich bass not too powerful but that perfect blend to match a pair of Bose 901's. Also along with with that combo is a stereo receiver the very best in the world NAD 725Bee awesome!

Pros: Perfect

Cons: Keep producing them


Written By Roberto C, San Juan PR on Wednesday, January 22, 2014

Crutchfield Customer Review (What's this?)

nice and solid bass even at low power

Pros: nice sound and look

Cons: none


Written By B S, Houston, TX on Monday, January 20, 2014

Crutchfield Customer Review (What's this?)

Got this included with the RM 87 7.1 surround system, What a difference the sub makes, awesome!

Polk Audio PSW108

Written By Terencef, Pomona , New York on Tuesday, January 14, 2014

Crutchfield Customer Review (What's this?)

Great bass ! Completes entire audio system ! Great upgrade

Pros: Booming bass !

Cons: None

Polk Center Channel Speaker CS10

Written By 31Voldog, Cleveland, TN on Saturday, January 11, 2014

Well worth the money. Vocals and all high end sounds are clear and crisp. Using controls on Onkyo NR509 allows various adjustments to fine-tune to anyone's preference. Must have for home theater, but enhances music as well.

Pros: Great sound, great price, ease of setup/install.

Cons: Be prepared to raise you TV, or purchase new console; it is big.

Great Budget Subwoofer

Written By PureDark, Taber, AB on Monday, January 06, 2014

For what it is and for the price this sub is amazing. I have it paired with two Polk Audio M20's ($130CAN on sale) and they are a wonderful match. I am running them off a Cambridge Audio C500/P500 so the source is solid. I wired it through the high level inputs and set the crossover to 80hz. It meets the M20's wonderfully in my small room. You may read complaints about not enough punch or distortion but for under $100 the sub does very well. During movies I can feel the thunder and for jazz, classical, and rock it it very smooth.

Pros: Great price (only buy if it's on sale) Great sound for it's price Input options (high level and two channel line level) Auto-on/off

Cons: None so far

Totally awesome product!!

Written By heavyd, Marietta, Ga. on Saturday, January 04, 2014

Crutchfield Customer Review (What's this?)

If you have a nice system , and do not have a subwoofer , you are missing out. The Polk Audio is the best thing I could have done for my system , the sound is truly incredible, I have some JBL bookshelf speakers and this thing fits in with them perfectly. You can adjust the settings easily and I do not suggest this for anyone living in an apartment with close neighbors. The house will shake when this thing is kicking, for real...

Pros: sound , a real deal for the money

Cons: NONE

Polk Audio PSW108

Written By J,I,, San Juan, PR on Saturday, January 04, 2014

Crutchfield Customer Review (What's this?)

Great sound. The volume of this 50 watts PSW is good enough and improved the sound of my home audio significantly


Written By GARY S, HAZARD , KY on Thursday, October 24, 2013

Crutchfield Customer Review (What's this?)



Cons: NONE

PSW1O8 is great

Written By Anonymous, Granbury Texas on Sunday, September 29, 2013

Crutchfield Customer Review (What's this?)

This woofer sounds great and is priced very reasonable. It easily overpowers my cheap home theater speakers I will definitely be upgrading them soon.

More Than I Expected

Written By Steve Down South, Memphis on Wednesday, September 04, 2013

Crutchfield Customer Review (What's this?)

I have replaced an Optimus (Radio Shack) sub. No controls. Attach the wires and what you get is what you get. The PSW108 is awesome! I am using Polk bookshelf speakers. Since the PSW108 is powered, it's not a problem adjusting the sub to match the speakers. The PSW108 could easily accommodate much larger speakers. The sub "sleeps" after you shut down the audio and comes right back on when it senses audio. It's a feature I like. I've always thought audio equipment is a bargain. Twenty years ago, you wouldn't be able to find a sub of this quality for $180. Describing how music sounds is difficult. Let's just say there is butt kicking bass that is not out of place. Rock 'n' roll is wonderful and some jazz albums have extraordinary low passages. Movie soundtracks are the killer. When a door slams, you feel like you're in the room. When that music comes on, Sally Jo is going to be sorry she walked in the room. You can feel it. There are times I like to make the walls shake, but when the music is turned down low, the PSW108 is still working. At low listening levels, you still get everything. I'm impressed.

Pros: powerful, adjustable, good looking, easy, solid

Cons: duuuuh...can't think of any

Polk Audio PSW108

Written By Dennis S, Rock Hill,SC on Saturday, July 13, 2013

Crutchfield Customer Review (What's this?)

Clear crisp bass. Fills in 5.1 sound system as promised.

Pros: easy to hook up to 5.1 system

Great Subwoofer

Written By Texas Pipeliner, Spring, TX on Sunday, June 16, 2013

Crutchfield Customer Review (What's this?)

I connected this to a Denon 1913 AV Receiver and Amp, Center Speaker and 4 ceiling mounted speakers. The Audyssey automatic tuning did a great job of identifying one speaker connected backwards and then equalizing speaker and room. The subwoofer really can tick the wife off . . . not intended but what can I say.

Pros: Great price, good performance

Cons: None

Sub woofer

Written By Don S, Minocqua, Wi on Thursday, May 09, 2013

Crutchfield Customer Review (What's this?)

Outstanding performance. It is paired with Polk TSI 300 and integrated great.

Pros: Excellent for price

Cons: None


Written By CB, PA on Tuesday, April 23, 2013

Crutchfield Customer Review (What's this?)

Nice thundering bass in a small package.

Completely Polk!

Written By Josh, Winnipeg Manitoba on Friday, April 19, 2013

Picked up 2 of these to complete my surround hooked up to onkyo nr-616 and Polk in wall speakers all around. Very happy that I found these subs now any movie watched on the big screen is worth mentioning.

Pros: Price, sound, everything

Cons: Nothing at all......yet

polk PSW108

Written By Warcry, Independence Mo. on Tuesday, April 16, 2013

Crutchfield Customer Review (What's this?)

I just received this item today and Im blown away.This sub really kicks!Its too bad I live in an apartment otherwise Ide bring down the house!Totally awesome!!!!!!

Pros: Easy set up.I tweeked it and it sounds GREAT.

Cons: None at all

PSW 108

Written By CB, Indianapolis on Monday, April 08, 2013

Crutchfield Customer Review (What's this?)

Great sound

Pros: Sound quality.

Good Vibrations

Written By SteveM, Atlanta, GA on Monday, October 22, 2012

Crutchfield Customer Review (What's this?)

Wow! This little sub cranks out some low frequency. I recently purchased this sub, paired with an Onkyo TX-8255 receiver and a set of Polk TL1 Blackstone bookshelf speakers. I'm seriously impressed with the sound. I'm on a budget, so for the price I certianly got my money's worth. Glad I don't live in an apartment.

Pros: clean lows, loud, no distortion.

Cons: It's pretty big. if you have a small space you'll be struggling to find room.


Written By ronnie l., westminster,md. on Tuesday, October 02, 2012

Crutchfield Customer Review (What's this?)

great sound easy setup i live in an apartment so cant crank it too much but when i do it rocks .great sound at lower volume.was free with my speakers cant beat that price.thought it would be trash for free but i love it. thanks again crutchfield

Good bas, seems solidly built

Written By Bobafet512, IL on Wednesday, September 19, 2012

Crutchfield Customer Review (What's this?)

Looks nice, puts out good bas. I don't know much about two inputs like this one has, but my advisor said I could hook the single sub out cable from my receiver to either one of the inputs on the sub and it should work. It did. Perhaps Crutchfield could put that information somewhere in the description or their review (unless I missed it).

Pros: Looks good, puts out good bas, Gotta love Crutchfield's free shipping!

Cons: A little on the pricy side for me.

Great Product

Written By CurtT, Layton, UT on Wednesday, July 25, 2012

Crutchfield Customer Review (What's this?)

This is a fantastic subwoofer for the money. It doesn't distort even at high volume. I turn it down so it doesn't overpower the rest of my system. Sounds better than my old one for about the same money I paid 10+ years ago. I gave it 4 stars because I'm sure if you spent quite a bit more money you could get one that would qualify for a 5 star rating.

Pros: Easy set-up.

Cons: None so far!

PSW108 powered subwoofer

Written By shane, Santa Barbara, CA on Thursday, April 05, 2012

Crutchfield Customer Review (What's this?)

The sound is great!

Pros: Sounds great, easy installation, clean looking , great construction

Hands-on research

What's in the box?

Download owner's manual

  • Powered subwoofer
  • Grille (installed)
  • Owner's Manual
  • Online registration card

Features and Specs

Enclosure Bass Reflex
Video Shielded No
Woofer Size (inches) 10
Woofer Composition Composite polymer
Firing Direction Front
Wireless No
Preamp-Level Inputs Yes
Speaker-Level Inputs Yes
Speaker-Level Outputs Yes
Low-Pass Crossover Freq 80-160 Hz
High-Pass Crossover Freq None
Phase Switch Yes
Amplifier Output (watts) 50
Frequency Response 40-160 Hz
Height (inches) 14-7/16
Width (inches) 14
Depth (inches) 16-1/8
Weight 26 lbs
Speaker Parts Warranty 5 Years
Speaker Labor Warranty 5 Years
Amplifier Parts Warranty 3 Years
Amplifier Labor Warranty 3 Years

Product Research



10" Driver: The Polk Audio PSW108 uses a front-firing 10" composite polymer cone driver (with foam surround) for deep, accurate response with low distortion.

Klippel Optimized Woofer: By using a state-of-the-art Klippel Distortion Analyzer, Polk is able to optimize the woofer's motor structure, voice coil alignment and suspension for the best possible performance even at extreme listening levels.

Motor Structure: The PSW108 utilizes a powerful motor structure for a higher BL responses (the measure of the motive force applied to the cone) that results in louder, deeper and punchier bass.

Compression Circuitry: The woofer's Compression Circuitry limits distortion at high volume levels.

Amplifier: The subwoofer is powered by a high-current amplifier producing 50 watts RMS/100 watts dynamic power that supplies clean power for loud bass and a wide dynamic range necessary to recreate a life-like experience in your home.

Enclosure: The PSW108 features a bass-reflex enclosure with non-resonant MDF construction and internal bracing for deep bass impact with superior detail and accuracy. The Polk Audio PSW108 is available in a black wood-grain vinyl-wrapped finish.

Front-Firing Port: The powered subwoofer's front firing port allows the woofer to be extremely efficient and provides more bass impact for your home theater experience.

Not Video Shielded: The subwoofer is not magnetically shielded, so it is not recommended to place it next to tube TVs and video monitors. Though LCD, DLP and Plasma televisions are not affected by magnetism you should allow at least 18" of space between the subwoofer and any TV.

Placement: You may place the subwoofer anywhere in your room, but it will perform best when it's on the same side of the room as your system's front speakers. Also, placing the subwoofer near a wall or in a corner will increase its loudness.


Power Switch: The subwoofer has a 2-way power switch on the rear panel. When On/Auto is selected, the subwoofer turns on automatically when an input signal is received and off 15 minutes after the signal stops. The LED power indicator glows green when the unit is on and red when the unit is off.

Volume Control: The PSW108 has a rotary volume control to adjust the volume of the subwoofer relative to the other speakers in the system.

Phase Switch: The subwoofer's phase switch allows you to select 0-degrees (normal) or 180-degrees (reverse). If the bass sounds muddy or unclear, toggling the phase control can sometimes strengthen the bass attack.

Low-Pass Filter: The PSW108 offers a continuously variable low-pass filter, adjustable from 80-160 Hz.


Line Inputs: The PSW108 has gold plated left and right RCA line level inputs. If your receiver or processor has a single subwoofer line output, you can connect it to either the left or right line input jack. For receivers having subwoofer or stereo preamp outputs that do not contain their own low-pass crossover, the PSW108 will handle the low-pass filtering. If the receiver's subwoofer output or "LFE" output has a built-in low-pass filter, the PSW108's low-pass control should be turned fully clockwise (160Hz).

Note: The PSW108 does not have a dedicated LFE input.

Speaker Level Input/Output: The subwoofer has spring clips for the speaker level inputs and outputs. The subwoofer's low-pass filter sends bass frequencies (based on the setting of the filter) to the subwoofer. The speaker level inputs and outputs are shorted together, so the output is not crossed over. You should set you receiver's front speaker setting to Large.

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Looking for more? Check out the next model in this lineup.

Polk Audio PSW110 (BK)

Get more power and bass

The Polk Audio PSW110 offers these features:

a 100-watt high-current amplifier for more powerful lows with your movies and music

a separate LFE input for connection to a receiver's subwoofer output