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Polk Audio Signature S15

Bookshelf speakers (Walnut)

10 Reviews | 1 question - 2 answers

Item # 107SIGS15W

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Expected: 9/4/2018 Reserve risk-free

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Was: $229.99

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Overview

Our take on the Polk Audio Signature S15

Polk's Signature S15 bookshelf speakers serve up clean, accurate sound, making them a great choice for today's high-resolution digital music or for use in a surround sound system. With their curved edges and attractive black or walnut finish, these stylish speakers look great in every room.

Dynamic sound for music and movies

Polk's Signature S15 bookshelf speakers serve up clean, accurate sound, making them a great choice for today's high-resolution digital music or for use in a surround sound system. With their curved edges and attractive black or walnut finish, these stylish speakers look great in every room.

Polk Audio Signature S15

Polk Audio Signature S15 speakers offer natural, detailed sound for music and movies.

Built for smooth sound

The S15s are made with high-quality materials for natural, low-distortion sound. Each cabinet houses a 1" high-resolution Terylene dome tweeter for clear, detailed highs and realistic reproduction of instruments and vocals. The highly efficient 5-1/4" Dynamic Balance® woofer is made of lightweight yet durable mica-reinforced polypropylene. Non-resonant MDF (Medium Density Fiberboard) cabinets and anti-diffraction magnetic grilles 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 and Polk Signature S20
Center channel: Polk Signature S30 or Polk Signature S35
Floor-standing speakers: Polk Signature S50, Polk Signature S55, or Polk Signature S60

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: 50-40,000 Hz
  • sensitivity: 88 dB
  • 8-ohm impedance
  • handles up to 100 watts
  • 1" Terylene high-res dome tweeter
  • 5-1/4" mica-reinforced polypropylene Dynamic Balance® cone driver
  • Power Port® technology for better bass response
  • non-resonant MDF cabinet
  • 5-way gold-plated binding posts
  • anti-diffraction magnetic grilles for minimal sonic interference
  • keyhole slot for wall-mounting
  • 7-9/16"W x 12-1/16"H x 10-1/4"D
  • weight: 13 lbs.
  • warranty: 5 years
  • Our 60-day money-back guarantee

What's in the Box:

  • 2 Bookshelf loudspeakers
  • 2 Grille (attached)
  • 8 Self-adhesive rubber feet
  • Wall-mount template
  • Owner's Manual
  • Online Product Registration
Reviews

Polk Audio Signature S15 Reviews

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Details

Hands-on research

Features and Specs

Enclosure Bass Reflex
Video Shielded No
Tweeter Type Dome
Tweeter Size (inches) 1
Midrange Size (inches) N/A
Woofer Size (inches) 5.25
Woofer Composition Mica-reinforced polypropylene
Woofer Surround Butyl rubber
Power Range 20-100
Sensitivity 88 dB
Impedance (Ohms) 8
Frequency Response 50-40k Hz
Connector Type 5-way post
Bi-amp Inputs No
Height (inches) 12-1/16
Width (inches) 7-9/16
Depth (inches) 10-1/4
Weight (pounds) 13
Mounting Bracket Included Keyhole
Recommended Stand Height (inches) 24-30
Parts Warranty 5 Years
Labor Warranty 5 Years

Product Research

Features

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 S15 bookshelf loudspeaker incorporates a Dynamic Balance two-way driver array with one 1" tweeter and one 5.25" woofer.

  • Hi-Res 1" Terylene Tweeter: The Signature S15 bookshelf 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.
  • 5.25" Mica-Reinforced Polypropylene Woofer: The Signature S15 bookshelf speaker employs one 5.25" Dynamic Balance low distortion mica-reinforced polypropylene cone woofer for clean, clear bass, better linearity, and increased dynamic midrange and midbass. This mica-reinforced polypropylene woofer features a butyl rubber surround, massive ceramic motor structure, and a high-temperature Conex fiber spider that combine to create a driver of exceptionally high efficiency, for clean, clear bass, better linearity, lower distortion, and greater durability.

Power Port Technology: The Signature S15 bookshelf incorporates Polk's Power Port technology with a specially designed rear-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.

Non-Resonant Enclosure: The bookshelf 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 S15 includes an anti-diffraction magnetic grille for unaltered sound. The integrated magnets make it easy to attach and remove the grille from the bookshelf speaker.

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

5-Way Binding Posts: The bookshelf loudspeaker features 5-way binding posts for a secure connection to your speaker wire. 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).

Applications & Placement: The Signature S15 bookshelf 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 S15 should be set to "Small" to filter out low bass frequencies.

  • 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 S15 should be placed on a side wall slightly behind and above the listening position. If you cannot place the speakers on the side walls, position them on the rear wall above the listening area.

Mounting Options: The S15 bookshelf loudspeakers come with self-adhesive rubber feet so they will sit safely and securely on your speaker stands or shelf. The included rubber feet add approximately 0.125" to the height of the speaker. The bookshelf speakers also have a keyhole slot bracket on the back panel, allowing the speakers to be mounted on the wall using optional mounting screws (sold separately). A wall-mount template is provided to assist you.

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

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Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

better long term solution that the RTi's IMO [ Brian  May 27, 2018 ]
Highly rated. Ideal specs for my application. Good price. Helpful advice from chat advisor Levi. I have had very good previous experience with other Polk Audio products. [ David  Mar 04, 2018 ]
The S20 was too large to fit into my bookcase. [ GEOFF  Feb 02, 2018 ]
You are out of stock of Boston Acoustics A25, so I chose the Polk S15. [ Maria  Jan 31, 2018 ]
I've already decided on the Signature series. These will be my surrounds. There's a dedicated surround (S10) pair, but for the price difference wanted the 5.25" drivers. [ Damon  Nov 24, 2017 ]
I already have S55,S35,and S10 and would like to add these to the mix for top ft and left [ JAMES  Aug 26, 2017 ]
The built in keyhole bracket on back. The others I viewed did not have this feature. [ THOMAS E  Jul 23, 2017 ]
Great Brand [ francisco  Apr 17, 2017 ]
picked the Polk S15 to go with my S35 center speaker [ Jeff  Apr 12, 2017 ]
Polk reputation and styling. [ Christopher  Nov 29, 2016 ]
They look beautiful and I know Polk to have a longstanding reputation for quality and performance. They seem to compare well to other brands in this price point as well. This is my first higher end audio purchase. I hope it turns out great! [ Jacob  Apr 17, 2018 ]
I seen these on display at another store and with the combination of a subwoofer, they sounded great! Also, being able to hang them on the wall was a deal sealer for me. [ Michael  Mar 27, 2018 ]
great sound and match to cabinet woodwork [ Jeffrey  Dec 26, 2017 ]

1 question already asked

You will want a receiver that can do 100 watts, which does mean per speaker. That is highest output though, the range is 20-100. [ Daniel  Dec 29, 2017 ]
Each speaker needs at least 20w and can handle up to 100w. [ Jeffrey  Dec 29, 2017 ]
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