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Polk Audio DSW PRO 440wi

Powered subwoofer

56 Reviews | 3 questions - 11 answers


Our take on the Polk Audio DSW PRO 440wi

Are weak explosions sucking the excitement out of your action movies? Then pump a little life into movie night with the Polk DSW PRO 440wi. It uses an 8" woofer and powerful 180-watt amplifier to produce deep, authoritative bass. This advanced subwoofer features Polk's exclusive Feed Forward™ technology, which reduces audible distortion without limiting volume. You get quick, precise response throughout the sub's entire frequency range, even at ground-shaking volume levels.

Add big bass to your next movie night

Are weak explosions sucking the excitement out of your action movies? Then pump a little life into movie night with the Polk DSW PRO 440wi. It uses an 8" woofer and powerful 180-watt amplifier to produce deep, authoritative bass. This advanced subwoofer features Polk's exclusive Feed Forward™ technology, which reduces audible distortion without limiting volume. You get quick, precise response throughout the sub's entire frequency range, even at ground-shaking volume levels.

Sounds great no matter where you place it


The PRO 440wi also includes the Polk Room Optimizer™, an ingenious feature that lets you specify the location of your sub with one of four options — corner, mid-wall, in-cabinet, or mid-room. The Optimizer then automatically equalizes the sub's response to ensure smooth, clean bass from that position. You can easily access this function, as well as the volume control and phase switch, with the included remote, so you can fine-tune the bass from your favorite listening spot. Removable feet let you position the PRO 440wi for either front-firing or down-firing operation, whichever you prefer.

Product Highlights:

  • 180-watt RMS Class D amplifier
  • 8" down-firing woofer (feet can be repositioned for front-firing operation)
  • bass-reflex (ported) enclosure
  • Feed Forward technology maximizes output and improves dynamic performance
  • Polk Room Optimizer delivers punchy bass no matter where you place the sub in your room
  • Night mode dynamic range compression
  • frequency response 30-125 Hz (-3dB)
  • continuously variable 60-160 Hz crossover
  • 4-position phase switch (0, 90, 180, and 270 degrees)
  • auto on/off
  • speaker-level and line-level inputs and outputs
  • unfiltered LFE (low frequency effects) input
  • Energy STAR® certified
  • remote control
  • 13-3/4"W x 14-3/4"H x 16-1/4"D
  • warranty: 5 years woofer, 3 years amplifier
  • Our 60-day money-back guarantee

What's in the Box:

  • Black powered subwoofer
  • IR wireless remote control
  • CR2025 3V lithium battery (installed in remote)
  • 9' Detachable power cord (IEC 2-pronged end)
  • 4 Rubber insert feet
  • Owner's Manual
  • Online registration card
  • Cardboard features list

Paired with my Sonos bar to make watching movies exponentially more immersive.

Chris, Spokane, WA


Polk Audio DSW PRO 440wi Reviews

Average Customer Review(s):

(56 Reviews)
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Hands-on research

Features and Specs

Enclosure Bass Reflex
Video Shielded Yes
Woofer Size (inches) 8
Woofer Composition Composite Poly
Firing Direction Selectable
Wireless No
Preamp-Level Inputs Yes
Speaker-Level Inputs Yes
Speaker-Level Outputs Yes
Low-Pass Crossover Freq 60-160
High-Pass Crossover Freq None
Phase Switch Yes
Amplifier Output (watts) 180
Frequency Response 30-125 Hz
Height (inches) 14-3/4
Width (inches) 13-3/4
Depth (inches) 16-1/4
Weight 30 lbs
Speaker Parts Warranty 5 Years
Speaker Labor Warranty 5 Years
Amplifier Parts Warranty 3 Years
Amplifier Labor Warranty 3 Years

Product Research



Driver: The DSW PRO 440 uses an 8" Dynamic Balance composite polypropylene cone driver for deep, accurate response with low distortion. For a smoother response and improved durability, the woofer utilizes a rubber surround.

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

Class D Amplifier: The subwoofer is powered by a high-current Class D amplifier producing 180 watts RMS power (300 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. The efficiency of a Class D digital amplifier translates into high-power, and cool, reliable operation with low distortion.

Feed Forward Distortion Suppression Technology: This technology maximizes acoustic output as it reduces audible distortion. Feed Forward is a zero latency system that maximizes dynamic output of the subwoofer system without relying on slow responding feedback techniques. What you'll hear is quick, precise bass output with minimal audible distortion, even at loud volume levels.

Enclosure: The DSW PRO 440 features a bass-reflex enclosure with non-resonant MDF construction and internal bracing for deep bass impact with superior detail and accuracy. The subwoofer's enclosure's durable onyx black finish can be painted to match your room decor, if desired.

Downward Radiating Slot Port: The DSW PRO 440 features a downward radiating slot port which lessens turbulence, noise and distortion. The result is deep, clean and accurate bass.

Video Shielded: The DSW PRO 440 is magnetically shielded for placement near video monitors. You should still allow at least 18" of space between your subwoofer and any tube television. LCD, DLP and Plasma TVs are not affected by magnetism.

Frequency Response: The overall frequency response for the subwoofer is 25-160Hz, and the -3 dB frequency response is 30-125Hz.

Repositionable Feet: The DSW PRO 440 features repositionable rubber or spike feet which allow you to orient the subwoofer on its "back" to turn it into a front-firing woofer when you want to hide the subwoofer away in cabinets. There is an optional woofer grille (item # 107DSW400G, sold separately) available when the subwoofer is used in a front firing application.

Note: The remote control may not operate when the subwoofer is placed in a cabinet with the driver facing into the room. If this occurs, adding an IR repeater will enable the remote control to communicate with the subwoofer.


IR Wireless Remote Control: The DSW PRO 440 comes supplied with a credit card sized IR wireless remote control which operates the following subwoofer controls - Volume, Mute, Phase, Night and Polk Room Optimizer. All commands are sent to the subwoofer via IR control. The IR receiver is located on the front of the subwoofer when the subwoofer is its downward firing configuration. There is a blue LED behind the woofer's logo badge which blinks to confirm the subwoofer has received and responded to the remote's instructions. The LED feature can be turned off.

Note: The subwoofers crossover setting must be set using the controls located on the rear panel of the woofer.

Polk Room Optimizer: The DSW PRO 440's remote control incorporates the Polk Room Optimizer (PRO) feature. The Polk Room Optimizer feature allows you to place the subwoofer where you want it in your listening room. Based upon the four most common room placements for subwoofers, the Polk Room Optimizer maximizes sound quality for you, smoothing out the bass response that a particular room placement creates. There are four push-button room equalization presets on the remote that correct for room boundary effects for typical room placements: "cabinet," "corner," "mid-wall," and "mid-room." The result is great bass performance no matter where you place your DSW PRO 440 subwoofer.

Night Mode: Night Mode compresses the dynamic range of the woofer's output, so you hear low-level bass detail at lower volumes.

Volume Control: The DSW PRO 440 has a push button volume control to adjust the volume of the subwoofer relative to the other speakers in the system. The volume is adjustable from 0 to 40. The blue LED on the front panel will indicate the volume level using a combination of short and long blinks. The volume can also be adjusted using the supplied wireless remote.

Phase Switch: The subwoofer's IR wireless remote features a phase control which allows you to select 0-degrees (normal), 90-degrees, 180-degrees (reverse) or 270-degrees. This control enables the subwoofer to blend more seamlessly with your main speakers. If the bass sounds muddy or unclear, using the phase control can sometimes strengthen the bass "attack."

Low-Pass Filter: The DSW PRO 440 offers a continuously variable low-pass filter, adjustable from 60-160 Hz. The cut-off frequency must be manually set from the subwoofer's control panel.

3-Way Power Switch: The subwoofer has a 3-way power switch on the rear panel. You can select "Auto", which turns the unit on automatically when an input signal is received and off 15 minutes after the signal stops; "On", which keeps the unit on and "Standby", which turns the unit off. The LED power indicator glows green when the unit is on, red when the unit is off and yellow during standby mode.


LFE (Unfiltered) Input: The DSW PRO 440 has a gold-plated mono RCA LFE (Low Frequency Effects) input. This input should be used when connecting to a receiver with a filtered subwoofer output, such as those found on most home theater receivers (check the receiver's owner's manual). The LFE input bypasses the subwoofer's built-in low pass crossover.

Note: If the receiver's subwoofer output is unfiltered, you should use either the left or right Line Input of the subwoofer.

Line (Filtered) Inputs/Outputs: The subwoofer has gold plated left and right RCA Line Level inputs. The inputs are for use with electronics featuring unfiltered "Pre Out" jacks (Example: a separate pre-amp processor with a separate amplifier). It may require "Y adapters" to connect the left and right outputs of the pre-amp processor to both the subwoofer and the power amplifier. The line outputs allow you to send a filtered signal to a power amplifier to drive bookshelf speakers.

Speaker Level Input/Output: The subwoofer has 5-way binding post connections for front speaker level input and output. The subwoofer's low-pass filter takes the low frequencies (based on the setting of the filter) and sends it to the subwoofer. The speaker level outputs send a filtered signal to your connected speakers.

Our Product Research Team

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Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

Always pleased with Polk products [ JOHN  Jul 31, 2018 ]
I've had great experience with Polk Audio speakers. I currently have one of their 8" powered subwoofers, and bought this one to add a second sub to my home. [ David  Mar 05, 2018 ]
Sale [ Ken  Feb 01, 2018 ]
Bass [ Robert  Nov 25, 2017 ]
I already own one and really like it. [ Rob  Nov 22, 2017 ]
Adding a second Subwoofer [ David  Nov 17, 2017 ]
Recommended by Gordo to replace a infinity PS410. Took a chance on the scratch and dent sale. [ JOSEPH  Oct 29, 2017 ]
Compact size, reasonable price, styling, reviews, staff recommendation. [ RYAN  Jun 27, 2017 ]
Ordered complete set of Polk Signature series speakers.....yes they don't "really" need a sub, but I wanted a little lower hitting base when listening to music [ ANDREW  Jun 17, 2017 ]
To me Polk audio is one of the best. Real good sound looks, I have had the Polk RM6500 since 1999 and they still sound great. You won't go wrong with Polk audio or Crutchfield. Thanks again Crutchfield for all of your help. Thank you from a forever customer. [ Charles  May 17, 2017 ]
Needed some sub power for my family room theater system. Really adds another dimension for good action movies. [ THOMAS  Feb 21, 2017 ]
I've been using my Polk Audio DSW PRO 440wi for two years, with great results. It's added a wonderful bass response to my home theatre and audio system. I like it so much, I'm adding another one to the same space! [ COURTNEY A  Jan 26, 2017 ]
Better bass for music [ Christopher  Jan 18, 2017 ]
Bass [ dale  Jan 10, 2017 ]
Recommended [ Seth  Jan 07, 2017 ]
Great price for what I was looking for and a good fit for my living room [ BRENTEN  Jan 02, 2017 ]
Specifications met my needs and discounted price got me to purchase this item rather than another. [ B  Dec 14, 2016 ]
Have exact same unit in my upstairs Family Room. Building out my basement know with entertainment surround system. Have had my upstairs Polk 440wi for over 3 years now and just LOVE it - perfect amount of base for my size room and very adjustable for the level of base. Great quality product and amazing sound. Highly recommend! [ Brian  Oct 30, 2016 ]
Compromise of price and performance that satisfied my needs and to match my other Polk speakers. [ FREDRIC C  May 20, 2016 ]
Output to price value and wanted a downfiring sub-woofer - I'm very happy with the purchase. I do wish they offered this one with a cherry veneer option. [ Dean  Mar 06, 2016 ]
Compact size for a smaller media room with good performance! Can't wait to try it out with my Onkyo Receiver [ George  Jan 27, 2016 ]
price [ Bryce the contractor  Jan 07, 2016 ]
reccomendation [ Denise  Jan 05, 2016 ]
My neighbors have this woofer which I liked a lot [ SREENIVAS  Jan 04, 2016 ]
Budget can afford a little better than entry level option and I have heard these systems in person. I am confident the product will meet my expectations! [ Jeffrey  Dec 22, 2015 ]
Recommended by Aaron @ Crutchfield!! [ JOSEPH T  Dec 09, 2015 ]

3 questions already asked

Hey Fred- W/O knowing the receiver/multiplexer driving your speaker system, I can't say for sure. The sub-woofer volume decreases/increases at the same rate as the other speakers in the system I have. Good chance that it will be the same experience for you. It would be awkward if it was any other way, no? [ Greg  Jul 01, 2017 ]
I think so. Although this is not a technical answer. When I increase/decrease volume of receiver, I see a reduction in the subwoofer. I never have to control its remote. [ ACHINTYA  Jul 01, 2017 ]
Yes, that's correct - the SW maintains the same relative loudness level as the other speakers. Only at extreme levels (very high or very low loudness levels) some adjustments to the SW might be preferable. [ John  Jul 01, 2017 ]
In my experience when I increase and decrease the volume there is no lag in the sound generated from the sub woofer they work in unison. I hope this helps I have my 901"s at three quarter volume and the sound is great. the pro 440 keeps up fine. [ ROBERT M  Jul 01, 2017 ]
Yes Fred it does as you turn the volume of your amplifier or receiver up the volume of your subwoofers will rise to whatever level you have it set as a preset for example if you turn your sub three-quarters of the way up as a maximum volume what you'll find is that is as loud as it will ever get no matter how much volume you turn it up to but it will certainly go lower and volume as you turn the volume down so in simplest the answer to your question is yes sir it will [ jeff  Jun 30, 2017 ]
As you raise or lower the volume on the on the receiver the signal to the woofer automatically raises or descreases to match. The subwoofer remote would be to adjust the woofer volume to fine tune how much bass you would like at listen volume to fit your needs. Hope that helps [ CALVIN W  Jun 30, 2017 ]
It does on my sony using the sub RCA inputs and outputs from the receiver. Beware the outputs from a tape loop outputs and inputs if available though they dont vary in volume. [ Jeffrey  Jun 30, 2017 ]
Get the Bluetooth enabled/ready sub-woofer for this application. Perhaps a few more $ than the 440wi model. [ Greg  Jul 01, 2017 ]
i don't run my sub wirelessly but I don't see why not. It's just a matter of having the right transmitter and receiver for the sub>(Wireless transmitters and receivers are not included with subs but some have the capability to add it at additional cost) Have model and/or serial numbers in hand then call the peeps at Polk Audio to know for sure. [ CHRISTOPHER  Aug 26, 2016 ]
I don't believe so....the frequency of the wireless system from Polk is specifically for the DSW Pro Subwoofers...there are dedicated wireless surround sound systems on the market. The Polk Subwoofer can be used in conjunction with a separate wireless sound system. [ Chris  Dec 31, 2013 ]
Nick, I'm sorry I'm sure ask Crutchfield they should know best I can tell that this is one great sub. [ KEVIN M  Dec 29, 2013 ]

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