Polk Audio Signa S4 Sound Bar with Wireless Subwoofer

Brand: Polk Audio
Model Number: Signa S4
UPC: 747192135829
Polk Audio
Model Number: Signa S4
UPC: 747192135829

Polk Audio Signa S4 Sound Bar with Wireless Subwoofer

  • One Cable Set Up With Any TV (eARC or ARC HDMI, Optical, or Aux)
  • Customizable Sound for Movie, Music, and Night Modes
  • Dolby Atmos Certified 3.1.2 Sound Bar System
  • VoiceAdjust Technology, Hear Every Word





Payments as low as



Availability: In stock

Product Description

Features & Specifications



Polk Audio Signa S4 Sound Bar with Wireless Subwoofer

The Polk Audio Signa S4 sound bar, enjoy the latest blockbuster releases, immersive music, and your favorite TV shows in the amazing 3D sound provided by Dolby Atmos* and the award-winning Signa S4.

Award-Winning Immersive Sound

Signa S4 is Dolby Atmos Certified® to immerse you in 360 degrees of surround sound. From added ambience in music to special effects flying overhead, Signa S4 provides an incredibly realistic sound environment.

Advanced Seven-Driver Array

The Polk Audio Signa S4 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.

Voiceadjust–Hear Every Word

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 S4’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.

Optimized Sound Modes

Sound modes optimize the Polk Audio Signa S4 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.

Deep Effortless Bass

Signa S4’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.

Sets Up In Seconds

Set up is easy: simply connect the included 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. Polk Audio Signa S4 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 S4’s low-profile design won’t block your TV or your remote. Signa S4 can be wall-mounted for flexible placement.

Powerful Cinema Sound

The Signa S4 Dolby Atmos 3.1.2 sound bar with wireless subwoofer delivers crystal clear, cinematic 3D surround sound—at an unbeatable value.

Brand Polk Audio   Model Polk Audio SIGNA S4
Product: Polk Audio Signa S4 Sound Bar with Wireless Subwoofer

– Inputs: (1) HDMI (eARC), (1) Optical input, (1) Analog 3.5mm input, Bluetooth, (1) USB-A (for firmware updates)
– Sound Bar: L/R Tweeter: (2) 1” / 25mm (Round), L/R Mid: (2) 4.7 x 1.6” / 120mm x 40mm (Racetrack), Full Range Center: (1) 1” / 25mm (Round), L/R Elevation: (2) 2.6” / 66mm (Round)
– Subwoofer:: Woofer: (1) 5.9” / 15cm (Round)

– Sound Bar: 41.2 x 3.7 x 2.4”, 1046 x 95 x 60mm
– Subwoofer: 7.9 x 12.9 x 11.0”, 200 x 328 x 280mm

Included Accessories

– Sound Bar
– Subwoofer
– Remote Control
– Sound Bar Power Cord
– Subwoofer Power Cord
– HDMI Cable
– Optical Cable
– 2x AAA Batteries
– Quick Start Guide
– Registration Card
– Safety Card
– Wall Mount Template
– Wall Mount Spacers



Sound Bar Shape


Soundbar - Width


Soundbar Channels


Soundbar Features

4K Video Compatible, Active, ARC (Audio Return Channel), Bluetooth, Dolby Atmos, Subwoofer Included, USB, WiFi Compatible, Wireless Sub

Estimated Shipping

When you add an item to your cart the Estimated Shipping* cost will be shown.  This estimated shipping* cost is accurate to most major city locations across Canada.  If the shipping cost is higher than the estimated shipping* then GibbysESM will contact you for approval before we process your order.

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Polk Audio offers a limited 1 year Warranty – Amplifier
Polk Audio offers a limited 3 year Warranty – Speakers


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