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Polk Audio Signature S50

Floor-standing speaker (Black)

14 Reviews | 1 question - 1 answer

Item # 107SIGS50

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Our take on the Polk Audio Signature S50

Polk's Signature S50 floor-standing speaker delivers big sound without breaking the bank. As front speakers in a home theater setup, or as stereo speakers for high-resolution music, a pair of these towers will give you a real bang for your buck, serving up clean, detailed sound. And their sleek, stylish look makes them a choice addition to your living room décor.

Dynamic, room-filling sound

Polk's Signature S50 floor-standing speaker delivers big sound without breaking the bank. As front speakers in a home theater setup, or as stereo speakers for high-resolution music, a pair of these towers will give you a real bang for your buck, serving up clean, detailed sound. And their sleek, stylish look makes them a choice addition to your living room décor.

Polk Signature S50 floor-standing speaker

Built for smooth sound

The S50 is made with high-quality materials for natural, low-distortion sound. Its cabinet houses a 1" high-resolution Terylene dome tweeter for clear, detailed highs and realistic reproduction of instruments and vocals. Two highly efficient 5-1/4" Dynamic Balance® woofers are made of lightweight yet durable mica-reinforced polypropylene. Non-resonant MDF (Medium Density Fiberboard) construction and an anti-diffraction magnetic grille provide an acoustically inert structure for reduced sonic interference. Polk's exclusive Power Port technology adds bass impact.

Build a complete Signature system

Add more Polk Signature speakers for seamless surround sound.

Bookshelf speakers: Polk Signature S10, Polk Signature S15, and Polk Signature S20
Center channel: Polk Signature S30 or Polk Signature S35

Round out the low end with a Polk powered subwoofer.

Got wire?

Most speakers don't include any. Read our article about choosing and installing speaker wire.
Shop our selection of speaker wire.

Product Highlights:

  • frequency response: 33-40,000 Hz
  • sensitivity: 89 dB
  • 8-ohm impedance
  • handles up to 150 watts
  • 1" Terylene high-res dome tweeter
  • dual 5-1/4" mica-reinforced polypropylene Dynamic Balance® cone drivers
  • Power Port® technology for better bass response
  • non-resonant MDF cabinet
  • dual 5-way gold-plated binding posts
  • anti-diffraction magnetic grilles for minimal sonic interference
  • includes stabilizing feet
  • 7-1/2"W x 37-7/16"H x 11-1/16"D (10-5/16"W with feet)
  • weight: 32 lbs.
  • warranty: 5 years
  • Our 60-day money-back guarantee

What's in the Box:

  • Floorstanding loudspeaker
  • Grille (attached)
  • 4 Feet (pre-installed)
  • Owner's Manual
  • Online Product Registration

Wow - I didn't think a speaker like this would make THAT much of a difference. Present bass, clear dialogue... the detail in the audio is amazing. These speakers really make all the difference in experiencing movies, TV shows and music. Highly recommended.

Michael F, Warrington, PA


Polk Audio Signature S50 Reviews

Average Customer Review(s):

(14 Reviews)

Works of Art!

Michael from Cambridge, MA on 2/12/2018

Crutchfield Customer Review (What's this?)

Speakers arrived quickly and look and sound great. Set them up with bi-amping from a Sony DH770 receiver and they sound great at low, medium and high volumes and really create a nice soundstage. While they look great with the nice magnetic speaker covers attached, they're especially striking with the covers off and the tweeter/woofers showing.

Pros: Looks, sound across volume levels, ability to bi-amp.

Cons: None encountered so far.

No Bells and Whistles...Just Pure Sound!

Allan from New Port Richey, Florida on 2/5/2018

Crutchfield Customer Review (What's this?)

Received a week ago. Had doubts because I already sent back a set of RTIa3's, Monitor Bronze 2's and the S50 had smallest drivers of the lot. Changed my mind real quick. The highs are there but not overbearing...they're natural, as are the mids. Low end is also there. I listen to a lot of classical music, gospel music, and bluegrass. In two channel mode on my system the speakers excelled and were the most balanced I've ever purchased. Haven't even bi-wired them yet. I run also in five channel HT mode with a Yamaha CXA5000 pre connected to a brand new Emotiva BASX500 amplifier, 2 old Polk Monitor 30's? for the rears, a Klipsch center channel, and an Acoustech 12 inch subwoofer. I don't know why the center fits into the system but it does and so does the sub. The S50 can stand alone without a sub unless you want to rattle your walls but they are capable of getting way down there. Construction is extremely solid and I honestly love that you don't have to put the feet on yourself. The feet are unlike any I have used and super sturdy. The magnetic grill is a dream to put on and take off. I REALLY LIKE THEM. In the old days, they used to aim to duplicate sound so it sounded like the music that was explosive bass sounds, over exaggerated highs, etc. Reputations were built by how closely the speaker matched the reality of whatever sound it was duplicating. These speakers do just that!

Pros: Style, well controlled, smooth highs, crystal clear mids, decent bass, magnetic grill, feet and of course, the great customer service I received from Crutchfield in my search.

Cons: Top heavy

A+ speaker!

Michael F from Warrington, PA on 2/4/2018

Crutchfield Customer Review (What's this?)

Wow - I didn't think a speaker like this would make THAT much of a difference. Present bass, clear dialogue... the detail in the audio is amazing. These speakers really make all the difference in experiencing movies, TV shows and music. Highly recommended.

Pros: Clarity and presence in sound.

Cons: A little top heavy - although they haven't, they seem like they can tip over fairly easy.

These are the Speakers You're Looking For

Tim from San Jose, CA on 1/21/2018

Crutchfield Customer Review (What's this?)

I've put together an audiophile system which consists of a pure analog path: turntable > tube preamp > tube amplifier > speakers. The last components were the speakers. These speakers have really made the difference. They are efficient enough to get plenty of volume from my little 6W tube amp. And as far as tonal quality, all I can say is, compared to my old speakers these are like the difference between an SD and HD television. They have the tightest sonic definition I've heard, without being harsh. My ears are very sensitive to distortion in the mid-range, and only these Polk's haven't made me wince during a powerful horn section. My system has no controls for tone adjustment, so I needed a speaker that is inherently well-balanced. I don't really know how Polk's "Dynamic Balance" works, but it seems to be doing the trick. Much has been commented about the bass, which is comfortably reproduced by these speakers, without being artificially dominant in the mix. And to top it all off, these things look awesome!

Pros: Appearance, efficiency, sonic reproduction

Cons: Heavy, hard to move, no good place to grip them.

Polk Audio Signature S50

Anonymous from Gloucester, MA on 12/26/2017

Crutchfield Customer Review (What's this?)

Great sound, easy setup.



Great speaker for both music and movies

Steve from Jefferson City, MT on 12/15/2017

Crutchfield Customer Review (What's this?)

Prior to buying I researched extensively online. Living in a rural area I was unable to listen prior to buying, which was a source of worry for me. This turned out to be a great purchase. Good looking speakers but most importantly have great sound. I'm actually very impressed with the sound for both music and movies. I still want a subwoofer to round out the lowest frequencies but really not sure how much it will add.

Pros: - Great sound - Great value

Cons: - None

Amazing! Very well rounded sound and quality!

Drew from Honolulu, HI on 12/15/2017

Upgraded to these speakers after having a soundbar for many years. The quality, richness, crispness of the tweeter, and overall fullness of the sound is immediately apparent compared to the tiny speakers built into a soundbar. All of my sources (PS4 Pro, 4K blu-ray player, TV apps, music, Chromecast) have whole new life (especially the music!) and I'm hearing sound as I have never heard with excellent highs and great mids and lows. The bass isn't as good as a dedicated sub but it is very clean and punchy. The bottom powerports probably help out with this and it's a great addition to these speakers! One of the better looking floor-standing speakers aesthetically speaking. I am currently only running a two channel setup (bi-amped) with just these two speakers and a receiver. I can imagine having a center channel will help a bit with dialogue and a dedicated sub will fulfill overall sound, but these are excellent front speakers and would highly recommend them to anyone! Sure there are other more expensive 'lower end' series speakers available with maybe an extra speaker or something, but buying these speakers over others (i.e.- Polk TSi400) are analogous to buying a souped-up Toyota or entry level Lexus. Sure you'll be happy with both, but you know you want that Lexus... Crutchfield came in the clutch as always, shipped priority for free to Hawaii and it came within two days. Amazing!

Pros: -Full, rich sound -Crisp highs from the tweeter -Excellent build quality -Clean, tight bass (still doesn't replace a sub but great depth nonetheless) -Aesthetically pleasing to the eye -Allows for bi-amp/bi-wiring

Cons: None

Perfect for medium sized rooms

Robert from Eagar, AZ on 12/11/2017

Crutchfield Customer Review (What's this?)

These are my first Polk speakers and I am throughly impressed. Great quality and craftsmanship. The sound is superb and I was impressed with their range.

Pros: Sound, stylish, price.

Cons: None so far!

Could cost $200 more and still be worth it

Anonymous from Florida on 8/29/2017

Crutchfield Customer Review (What's this?)

Great sound, good bass. The cabinet I expected to be a little better quality but without a doubt this is A-PLUS Product and excellent value. Could cost 200 more and still be worth it.



Polk Audio strikes back again with a punchy winner!!!

Eric from Delray Beach, FL on 8/17/2017

Crutchfield Customer Review (What's this?)

I purchased the TSI300 last month great speaker. I would have bought the S50 last month but was not in my budget and they weren't budging on a discount, lol so I bought the TSI300 which sounded great on movies but was lacking something on the low end of the spectrum. I had gotten a email from crutchfield that the S50 dropped down in price which was in my budget so I returned the TSI300 for the S50 I have not pushed them to the limit or watch any movies as of yet but what I can say is this is a nice speaker with a different sound great low end and mid and high end base is great. I don't feel like I have to crank up my reciever volume to enjoy these speakers I find I'm turning my reciever volume half way with a louder sounding speaker overall I'm pretty happy with the way the speaker looks its detail is much more higher end the dust cover is magnetic. The base feet are sturdy and well balanced. I would recommend highly.

Pros: Low end Mid end High end Unique sound Craftsmenship Weight Balanced feet Sexy cabinet

Cons: None so far

Polk Audio Signature S50

DAN from New York on 6/26/2017

Crutchfield Customer Review (What's this?)

Great set of speakers , I have the S60 units too and they are stellar. The S 50's have great low end, punchy bass, very price.

Pros: Great bass, slender design , nice mid range ,

Cons: None

Good sound and great value

Bob from Bradenton, FL on 4/21/2017

Crutchfield Customer Review (What's this?)

The simulated walnut finish of the Polk S50 speaker is exceptional for the price. The sound quality is pleasing and well balanced across the frequency spectrum. I had to part with a pair of JBL Studio 270 speakers due to a cross-country move and while the S50's do not have the almost-too-detailed sonic quality of the JBL's, they are a good compromise. Overall, I am very pleased with them.

Pros: Exceptional finish and build quality for the price Well balanced sound quality

Cons: None worth mentioning

Polk Audio Signature S50

Steven Smith from Bronx, NY on 1/8/2017

Crutchfield Customer Review (What's this?)

I love these Polk Audio S50 has great sound and bass very nice speakers.



Good Value

Steve from Green River, WY on 12/26/2016

Crutchfield Customer Review (What's this?)

I have been using these speakers for three days, and they are already starting to loosen up. I think they need a few more days of usage before they sound the best. I think they are a good value based speaker for small to medium sized rooms. They are 13 feet from my listening area, and the sound loudness can easily become greater than a theater off 90 watts per channel. These are sensitive speakers. You should still have a sub woofer since below 50 hz they are weak.

Pros: Nice looking, good sounding, inexpensive



Hands-on research

Features and Specs

Enclosure Bass Reflex
Finish Meddite MDF
Color Black Wash Walnut
Tweeter Dome
Tweeter Size (inches) 1
Midrange Size (inches) N/A
Woofer Size (inches) 5.25
Woofer Composition Mica-reinforced polypropylene
Woofer Surround Butyl rubber
Built-in Powered Sub No
Video-Shielded No
Connector Type 5-way post
Bi-amp Inputs Yes
Parts Warranty 5 Years
Labor Warranty 5 Years
Power Range 20-150
Frequency Response 33-40k Hz
Sensitivity 89 dB
Impedance (Ohms) 8
Amplifier Power ---
Height (inches) 37-7/16
Width (inches) 10-5/16
Depth (inches) 11-1/16
Weight 32 lbs

Product Research


Dynamic Balance Drivers: Dynamic Balance is a proprietary Polk Audio technology using laser imaging to determine what combination of speaker materials create the least amount of resonance. Eliminating resonance in speakers results in a wide, smooth response and low distortion. Using just the right materials enables Polk to eliminate issues that reduce speaker performance and tune out performance-robbing resonances before they occur. Dynamic Balance ensures a rich, clean, full-range sound no matter what you're listening to. The Polk Signature S50 floor-standing loudspeaker incorporates a Dynamic Balance two-way driver array with one 1" tweeter and two 5.25" woofers.

  • Hi-Res 1" Terylene Tweeter: The Signature S50 floor-standing loudspeaker utilizes Polk's newly designed 1" Terylene tweeter to deliver clear and detailed high-end response for realistic reproduction of vocals and instruments. It will support high frequencies up to 40kHz to perfectly reproduce the latest high-resolution audio files with improved audio extension, earning Hi-Res Audio Certification.
  • Dual 5.25" Mica-Reinforced Polypropylene Woofers: The Signature S50 floor-standing speaker employs two 5.25" Dynamic Balance low distortion mica-reinforced polypropylene cone woofers for clean, clear bass, better linearity, and increased dynamic midrange and midbass. This mica-reinforced polypropylene woofers feature butyl rubber surrounds, massive ceramic motor structures, and high-temperature Conex fiber spiders that combine to create drivers of exceptionally high efficiency, for clean, clear bass, better linearity, lower distortion, and greater durability.

Power Port Technology: The Signature S50 floor-standing incorporates Polk's Power Port technology with a specially designed down-firing port. Power Port technology smoothly transition air flow from inside the speaker into your listening area for deep, extended bass impact while minimizing turbulence and distortion. Polk's patented Power Port technology delivers 3dB more bass response than a traditional ported speaker. Because the port is located on the bottom of the floor-standing speaker, its not necessary to position to the loudspeaker a certain amount of feet from wall - giving you greater placement flexibility.

Non-Resonant Enclosure: The floor-standing speaker's strong, rigid and acoustically inert enclosure reduces unwanted internal standing waves for less audible coloration. And non-resonant Meddite MDF construction, extra bracing, and a thick front baffle ensure a more lifelike sound. The enclosure's curved edges not only look cool, they reduce standing waves inside the cabinet for less audible coloration. The enclosure features a beautiful black washed walnut finish.

Anti-Diffraction Magnetic Grille: The Signature S50 includes an anti-diffraction magnetic grille for unaltered sound. The integrated magnets make it easy to attach and remove the grille from the floor-standing speaker.

Two-Way Crossover: The floor-standing speaker employs a high-performance two-way crossover array (2.5kHz) for seamless blending and optimum time alignment of the tweeter & woofers, creating a lifelike soundstage.

Dual 5-Way Binding Posts: The floor-standing loudspeaker has two sets of 5-way binding posts connected by jumpers. Using the dual 5-way binding posts, you can bi-amp or bi-wire the speakers. The 5-way binding posts will accept bare wire (up to 10AWG), pin-connectors, spade-connectors, and banana plugs (single or dual). The speaker terminals are color coded for easy identification between positive (red) and negative (black).

Dual-Floor Compatible Feet: Customized for improved stability and bass coupling to the floor, the floor-standing loudspeaker's feet are designed for both carpet and hard floors. The feet come pre-installed and should not be removed.

Applications & Placement: The Signature S50 floor-standing speakers can be used as front and/or surround speakers in a home theater setup. They can also be used in a simple stereo application. If your AV receiver offers built-in bass management, the S50 should be set to "Large" for an unfiltered, full-range audio signal.

  • Placement for Front Speakers: As a pair of front speakers in a home theater or stereo setup, create an equilateral triangle between the speakers and the listening position - with the speakers placed as far apart from one another as the listeners are sitting from them.
  • Placement for Surround Speakers: As surround speakers, the S50 should be placed on a side wall slightly behind the listening position. If you cannot place the speakers on the side walls, position them on the rear wall just behind the listening area.

Signature Series: Polk designed its Signature Series of loudspeakers to bring a big surround sound and a live music experience into the comfort of your living room at an affordable price. Featuring Hi-Res certification with a new high-resolution Terylene tweeter, redesigned Dynamic Balance drivers, precision crossovers, an anti-diffraction magnetic grille, modern cabinet styling and exclusive Power Port bass enhancing technology, Polk's Signature series loudspeakers deliver crystal clear highs, detailed midrange, and deep bass; plus they look great in almost any decor. The Signature Series by Polk consists of two center-channel speakers, three bookshelf loudspeakers, and three tower speakers.

Note: You may also want to add one of Polk Audio's powered subwoofers (sold separately) for even more bass response.

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.

Staff Reviews

Product reviews from the Crutchfield Labs

Polk Signature Series home speakers give you big sound for your music and home theater. They're high-res certified, and they look great, too.

What are the Labs?
Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

I currently have a Polk Audio RM705 5.1. Thinking about upgrading. Spoke with Mac in customer support about upgrading to 2 Polk S50 towers. Appreciated his help and guidance. I may also upgrade my center speaker to an S35 soon as well. Thanks! [ Roger  Dec 26, 2017 ]
The Polk Audio Signature S50 are a nice upgrade to my existing surround sounds system. I will use the S50 to replace my two front Infinity satellite speaker. Wolf provided excellent assistance in narrowing the field to my final decision. Thanks! [ ERIC  Dec 17, 2017 ]
Good reviews, newer technology [ Steven  Nov 28, 2017 ]
I like the customer service [ Doug  Nov 20, 2017 ]
Bought Polk S 60 and I love them, wanted 2nd pair , [ Dan  Jun 13, 2017 ]
the reviews on this speaker. [ J  Jun 06, 2017 ]
I love Polk Audio great speaker. [ Steven  Dec 24, 2016 ]
right speakers for my space [ Dennis  Mar 09, 2017 ]

1 question already asked

Thanks for your question! I would suggest reaching out to an Advisor by phone (1-800-324-9695) or online chat to discuss the center channel speaker options in more detail. They will be able to help determine the differences between models, and provide a personalized recommendation to suit your needs and budget. [ Larry  Jan 09, 2018 ]  Staff