POLK AUDIO Signa S4D Dolby Atmos Sound Bar w/ Wireless Subwoofer
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POLK AUDIO Signa S4D Dolby Atmos Sound Bar w/ Wireless Subwoofer

POLK AUDIO Signa S4D Dolby Atmos Sound Bar w/ Wireless Subwoofer

UPC #: 747192135829
Availability: IN STOCK, ships out in 1-2 Business Days.
50% off msrp
Item Condition:
Polk Audio Factory Refurbished
Manufacturers Warranty:
2 Year Speaker, 6 Month Amplifier Polk Audio
Manufacturers Part #:
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The Signa S4D sound bar’s advanced seven-speaker array was designed to deliver a lifelike Dolby Atmos 3.1.2 listening experience. Its dedicated center channel provides crystal clear dialogue and its optimized left and right tweeters and woofers deliver a huge, wide soundstage. Plus, dual up-firing speakers take advantage of Atmos’ height channels to send sounds over your head, rounding out your 3D sound immersion.


Tired of riding the volume control to hear the dialogue during quiet scenes? Have trouble picking out voices when the bass kicks in? Hear every word with VoiceAdjust. This patented technology combines with Signa S4D’s dedicated center channel to allow you to raise the volume of voices, making them clear and easy to understand, while leaving the rest of the soundtrack untouched.


Sound modes optimize the Signa S4D for the best sonic experience for movie watching and music listening. Don’t worry about waking your family or neighbors during late-night binge-watching sessions. With Night Mode, one button lowers the bass while increasing VoiceAdjust so you can hear every word.


Signa S4D’s powerful wireless subwoofer provides the deep, effortless bass that Polk is famous for, at loudness levels that are surprising for its size. Polk's exclusive BassAdjust mode controls bass on both the sound bar and sub ensuring seamless blending. The subwoofer connects automatically on start-up and can be conveniently placed nearly anywhere in the room. Put it up front for maximum impact or try behind the couch to feel the rumble.


Set up is easy: simply connect an HDMI or optical cable (or aux-in on older TVs) for the ultimate sound quality for any TV—even the latest 8K Ultra-HD TVs. Signa S4D is pre-programmed to work with most TV remotes and it quickly pairs to your mobile device via Bluetooth to stream your favorite music. Signa S4D’s low-profile design won’t block your TV or your remote. Signa S4D can be wall-mounted for flexible placement.


The Signa S4D Dolby Atmos 3.1.2 sound bar with wireless subwoofer delivers crystal clear, cinematic 3D surround sound—at an unbeatable value.




Channel Configuration 3.1.2-Channel
Enclosure Type Sealed
Midrange Drivers 2 x 4.7 x 1.6" / 11.9 x 4.1 cm
  2 x 2.6" / 6.6 cm Up-Firing
High-Frequency Drivers 2 x 1" / 2.5 cm
Full-Range Drivers 1 x 1" / 2.5 cm
Enclosure Type Bass-Reflex
Drivers 1 x 5.9" / 15 cm
Subwoofer Connectivity Wireless
Inputs 1 x HDMI 2.1 - ARC/Audio/eARC
  1 x Optical TOSLINK - Audio
  1 x 1/8" / 3.5 mm - Audio
USB Ports 1 x USB (Version Unspecified) (Service) (Rear)
Ethernet None
Wireless Audio Protocols Bluetooth
Wall Mountable Yes, with Optional Hardware
Dimensions 41.2 x 2.4 x 3.7" / 1046 x 60 x 95 mm (Soundbar)
  7.9 x 11 x 12.9" / 200 x 280 x 328 mm (Subwoofer)

Item Condition

Item Condition

Polk Audio Factory Refurbished

Factory refurbished products are returned (or open box returned) product that have been refurbished and certified by Polk Audio to match the Polk performance, functionality, and reliability standards of new product. Refurbished products may have minor cosmetics blemishes and/or imperfections. The manual and accessories are included with most of our refurbished items. Cosmetic blemishes and imperfections are not covered by the warranty. Polk Audio, Inc., warrants to the original retail purchaser only. This warranty will terminate automatically prior to its stated expiration if the original retail purchaser sells or transfers the product to any other party.

Polk Audio, Inc., warrants, to the original retail purchaser only, that the HOME LOUDSPEAKER(S), and PASSIVE CROSSOVER COMPONENT(S) on this Polk Audio Loudspeaker Product will be free from defects in material and workmanship for a period of two (2) years (6 months on active components) from the date of original retail purchase from Polk Audio.

Extended Warranties

Extended warranties

Get extra protection for your POLK AUDIO Signa S4D Dolby Atmos Sound Bar w/ Wireless Subwoofer with a comprehensive service plan




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