S50 is a 2-way Passive Bass Reflex Floor-standing speaker by Polk Audio. It features a 1" Dome Tweeter and 2 x 5.25" Mica-reinforced polypropylene Woofer. The speaker has a frequency range of 33-40k Hz and a sensitivity of 89 dB.
What size of room is the Polk S50 speaker good for?
The size of the room that you are planning to use the Polk S50 is an important decision factor. Here we have evaluated its suitability to various size of environments considering its size and max power parameters:
|Very Large Room||Poor|
Polk Audio later replaced S50 with ES50. Follow the link to read our in-depth comparison of these speakers:
Compare Polk S50 vs Polk ES50
What are the speakers in Polk Audio's Signature S Series?
S50 is a member of Polk Audio's Signature S series of Passive speakers. Below you can see the main specs of these speakers.
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What is the Frequency Response of the Polk S50 speaker?
Polk S50 has a Frequency response range of 33-40k Hz at ±3dB and Power Range of 20-150 watts. At a minimum frequency of 33 Hz, S50 will provide a deep bass that will probably satisfy majority of listeners, especially for music. Movie lovers and music listeners who likes to experience a full range response will still benefit from use of a subwooofer though.
Visit our Powered Subwoofers section to find out more about the available subwoofer options.
Here we have a comparison of how S50's Low and High frequency values compare with the average, max and min Low and High frequency values in its class.
What is the Crossover frequency of Polk S50?
Crossover frequency of the S50 is set to 2500Hz. This is the threshold frequency where the higher frequency signals over this level are sent to the tweeter and the lower frequency signals are sent to the woofer by the crossover component.
What is the Impedance and Sensitivity of the Polk S50? Is it an easy to drive speaker?
Polk S50's nominal impedance level is 8 ohms
and has a sensitivity of 89 dB
8 Ohms is pretty much the standard nominal impedance amongst stereo speakers and amplifiers so Polk Audio Signature S50 is not considered a difficult to drive speaker from nominal Impedance perspective.
89dB of Polk Audio Signature S50 is an average sensitivity for stereo speaker so it is neither easy nor difficult to drive Sensitivity wise.
Check our Integrated Amplifiers page to find an amplifier to pair with the Polk S50.
S50 has 5-way post type connectors and lets bi-amping/bi-wiring. Bi-wiring can provide improvements in the overall transparency of your loudspeakers by running separate speaker wires to the low & high frequency drivers from a single amplifier. Bi-amping allows the use of separate amplifiers for the high & low frequency drivers of your loudspeaker which may result in greater dynamic range & lower distortion.
Polk S50 External Dimensions and Weight
Polk S50 has external dimensions of (Height x Width x Depth) 37-7/16 x 10-5/16 x 11-1/16inch (951.0 x 262.0 x 281.0mm ).
Base Surface Area
Base surface area of a loudspeaker may become a determining factor when the space in your room or desk is limited.
The base area of Polk S50 is approximately 736.2cm2 / 114.1inch2.
The Polk S50 weighs 14.50kg / 31.9lbs (per piece). Here is a comparison of how S50's weight compared with the average, max and min weights in its class.
All Floor-standing Speakers
Cabinet type and Materials
Polk S50 has a Bass Reflex
type cabinet and Meddite MDF finish. Bass Reflex type loudspeakers (aka Ported, Vented or Reflex Port) have enclosures that uses a port, hole or vent cut into the cabinet. Ported designs are generally more efficient than the Sealed designs.
Polk S50 comes with 4 Feet (pre-installed)
which you can use to secure your loudspeaker on the surface that you are putting on. It is always recommended to use some kind of feet under all types of speakers. Besides limiting the movement of the speakers, it also compensates for non-flat surfaces and limits the contact surface area of the speaker. Rubber based feet also help isolating the vibrations within certain frequency ranges.
Polk S50 is a bottom-firing port speaker
Polk S50 is available in and Black.
Does the Polk S50 come with a Grille?
S50 comes with grilles. The purpose of the grille is to protect the delicate driver elements from external impacts while still allowing the sound pass as clearly as possible.
What's in the Box of Polk S50?
Here are the items that are included inside the box of S50:
Floorstanding loudspeakerGrille (attached)4 Feet (pre-installed)Owners ManualOnline Product Registration
For more information about how to setup, use and maintain the Polk Audio Signature S50, use the direct link below to download the official manual document:
Download User Manual for Polk S50
Here is a link to download the official brochure for the Polk Audio Signature S50 speaker:
Official Brochure for Polk S50
Official Product Page
Official manufacturer's product page for the Polk Audio Signature S50 speaker can be found below:
Official Product Page for Polk S50
5 Years of parts warranty and 5 Years of labor warranty is generally provided by the manufacturer.