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Polk Audio Signature S55

Floor-standing speaker (Black)

18 Reviews

Item # 107SIGS55

In Stock

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Was: C$499.99

Sale: -C$60.00

C$439.99 each

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Our take on the Polk Audio Signature S55

Polk's Signature S55 floor-standing speaker will rock your living room. Use a pair for stereo music or as front speakers in a surround sound setup. Either way, they'll deliver refreshingly clean, detailed sound. And their sleek, rounded design will make a nice addition to your room.

A high-performance tower for movies and music

Polk's Signature S55 floor-standing speaker will rock your living room. Use a pair for stereo music or as front speakers in a surround sound setup. Either way, they'll deliver refreshingly clean, detailed sound. And their sleek, rounded design will make a nice addition to your room.

Polk Signature S55 floor-standing speaker

Built for smooth sound

The S55 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 6-1/2" 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: 32-40,000 Hz
  • sensitivity: 90 dB
  • 8-ohm impedance
  • handles up to 200 watts
  • 1" Terylene high-res dome tweeter
  • dual 6-1/2" 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
  • 8-1/2"W x 41-9/16"H x 12-3/8"D (11-3/4"W with feet)
  • weight: 44 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

Front speakers for a small room surround sound system and small audio system set up. Works very well. Well built and sounding for the price tag.

Mark, Germantown, TN


Polk Audio Signature S55 Reviews

Average Customer Review(s):

(18 Reviews)


niel from Santa Rosa, CA on 5/4/2018

Crutchfield Customer Review (What's this?)

One thing I want to say first-hand is that these speakers take several weeks of constant play to break in. Otherwise there is virtually no mid-range, so don't be surprised and be patient. I'm only rating these at at 3 because they sound okay, but for my taste, the highs are really grating to an almost annoying degree. The Imaging quality is not there. The mid-range is still lacking after breaking them in. I recommend going with the Polk RTI A7. I returned the s55 for these and am confidently pleased. The tweeters are much sweeter and the speakers image very well. The mid-range is warm and sweet. The s55 is just okay. They do play loudly, I will give them that.

Pros: Nice footprint size. Plays loudly.

Cons: Harsh highs, lacking mid-range. Relatively poor imaging quality.

Good all around speaker

Mark from Germantown, TN on 4/30/2018

Crutchfield Customer Review (What's this?)

Front speakers for a small room surround sound system and small audio system set up. Works very well. Well built and sounding for the price tag.

Pros: Price

Cons: A little tall and big for a small room.

Full Quality sound for the price

Anonymous from Westminster, CA on 4/7/2018

Crutchfield Customer Review (What's this?)

Perfect for front speakers for theater surround. I noticed a great improvement in the sound quality using the By-Wire installation method. The bottom sound port creates a omni directional sound, unlike most forward projecting speakers. Combined with a quality Subwoofer you have amazing sound W/O trying to drive the Polk woofers their max lower dB level. Best design front covers using neodymium magnets instead of snap in retaining clips that are sometimes difficult to remove, for cleaning the covers.

Pros: Small floor space area required. Great sound when paired without the need for a top of the line Reciever / Amplifier.

Cons: A little to tall free standing next to average electronic stand or cabinet with so many wall mounted tv's

Polk Audio Signature S55

Recklen from Canfield, OH on 2/20/2018

Crutchfield Customer Review (What's this?)

Loving the Signature series! I have the S55's for front L/R, S30 center, the S10 as surrounds, and a pair of S15's for rear surrounds. Low frequencies are handled by a Klipsch Reference R-10SW (sounds fine for an entry level sub, but might need upgrading as the room is large- 17x32'). Using the Yamaha RX-A860 (also from Crutchfield!) for music and movies. The system fills the room and after some tweaking sounds crystal clear, and they look fantastic. Crutchfield helped me get exactly what I wanted and within my budget! If you're considering these speakers don't hesitate! And no need to shop elsewhere, this place is great.



Polk Audio Signature S55

Keith from Henrico, VA on 2/8/2018

Crutchfield Customer Review (What's this?)

Awsome. Crisp clear highs. Best tower speakers I have had the privilege of owning.

Pros: Everything

Cons: None

You really don't need a sub with these. Great low end.

Don from Maryville, TN on 12/4/2017

Crutchfield Customer Review (What's this?)

Look and sound great I paired them with the Polk S35 and four S10's



Polk Audio Signature S55

Connie from Roseland, NJ on 11/4/2017

Crutchfield Customer Review (What's this?)

The Polk Audio Signature S55 speakers sound great in my apartment! They provide a beautiful listening experience. The assistance I received from Crutchfield representative, Ziggy, made the purchase easy. This man definitely knows his audio business! Would definitely recommend these speakers and Crutchfield.



Polk Audio Signature S55

Anonymous from Sedona, AZ on 10/12/2017

Crutchfield Customer Review (What's this?)

These speakers are awesome. They are used in our bespoke home theater. Would definitely purchase again.



Polk Audio Signature S55

Anonymous from Citrus Heights, CA on 7/4/2017

Crutchfield Customer Review (What's this?)

I haven't listen to the speakers well enough yet, I haven't connect the biamp, my receiver TX-RZ 810 can only be connected for biamp option resetting the configuration to 5.1 and I have 10 speakers connected to the receiver. so far I am disappointed. My bookshelf Polk Audio sound better, and they are much smaller.



Polk Audio Signature S55

Anonymous from Austin, TX on 5/15/2017

Crutchfield Customer Review (What's this?)

After much research I decided to go with Polk. This new model is modern and the sound is great.



nice speakers for the money

brian from sterling, il on 4/24/2017

Crutchfield Customer Review (What's this?)

These are my first tower speakers. After hours of research and listening to speakers I chose these and am glade I did. I have a large room and they fill it well, after some break in time they sound great. Alot of speaker for the money.

Pros: nice clean sound, sound good with a cheaper reciver

Cons: none yet

Polk Audio Signature S55

Anonymous from New Baltimore, MI on 3/19/2017

Crutchfield Customer Review (What's this?)

I got these to replace my Infinity P252 speakers after the driver broke. These are a perfect upgrade for the rest of my Infinity surround system! I really get a lot of noticeable extra power with the larger drivers - it's like having stereo bass! Also, the double amping you can send to the speakers is awesome! It's my first set you can do that with, and it literally allows the speakers to receive twice the power! Overall, very happy with a substantial upgrade to my system - thanks to Ryan at Crutchfield for helping me pick these out! Awesome customer service and knowledgeable staff as always!



Grat Sound

Jason from Portland, OR on 3/18/2017

Crutchfield Customer Review (What's this?)

I listened to these speakers locally before purchasing online. This far i am very happy with them in my house. I use them for a 50/50 mix of home theatre and music. Very happy with my Polk purchase from Cruthcfield.



Polk Audio Signature S55

Anonymous from Edison, NJ on 3/12/2017

Crutchfield Customer Review (What's this?)

This product far outperformed my expectations

Pros: Great looking and great sounding



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) 6.5
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 20-200
Frequency Response 32-40k Hz
Sensitivity 90 dB
Impedance (Ohms) 8
Subwoofer Amp Power ---
Height (inches) 41-9/16
Width (inches) 11-3/4
Depth (inches) 12-3/8
Weight 44 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 S55 floor-standing loudspeaker incorporates a Dynamic Balance two-way driver array with one 1" tweeter and two 6.5" woofers.

  • Hi-Res 1" Terylene Tweeter: The Signature S55 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 6.5" Mica-Reinforced Polypropylene Woofers: The Signature S55 floor-standing speaker employs two 6.5" 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 S55 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 S55 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 S55 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 S55 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 S55 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 theatre. They're high-res certified, and they look great, too.

What are the Labs?