Polk Audio S50 Tower Speaker Pair

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.


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.

Build a complete Signature system

The Signature Series by Polk consists of two center-channel speakers, three bookshelf loudspeakers, and three tower speakers.

  • Center-Channel Speakers: S30, S35
  • Bookshelf Speakers: S10, S15, S20
  • Tower Speakers: S50, S55, S60
  • 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.
You may also want to add one of Polk Audio's powered subwoofers (sold separately) for even more bass response.
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