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Polk Audio Signa S4 Dolby Atmos 3.1.2 Sound Bar with Wireless Subwoofer

Polk AudioPart # 243-601
Model: Signa S4
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The Signa S4 is a 3.1.2-channel Dolby Atmos sound-bar system paired with a wireless subwoofer, crafted to deliver immersive 3D audio from movies, music, and games. With its ultra-slim bar, simple setup, and multi-device compatibility, it’s designed for modern entertainment spaces.

Key Features

  • Dolby Atmos Certified 3.1.2 sound-bar with up-firing height drivers for immersive overhead sound
  • Wireless subwoofer included for deep, effortless bass
  • Polk VoiceAdjust™ technology enhances dialogue clarity without affecting soundtrack
  • BassAdjust™ mode lets you control the level of bass on the sound-bar and subwoofer for seamless blending
  • HDMI eARC plus optical and aux inputs provide flexible connectivity even with the latest TVs
  • Night mode and preset sound modes (Movie, Music) offer optimized performance for different content
  • Ultra-slim low-profile bar fits in front of TVs or wall-mounts without obstructing view or IR sensors
Your Price: $359.00
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MSRP: $449.00
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Overview

Polk Audio Signa S4 Dolby Atmos 3.1.2 Sound Bar with Wireless Subwoofer

Polk Audio Signa S4 Dolby Atmos 3.1.2 Sound Bar with Wireless Subwoofer

Lifelike Movie Sound

The Signa S4 is Dolby Atmos Certified* to deliver 360-degree immersive surround sound. From the subtle ambience of music to effects soaring overhead, it creates an impressively realistic sound experience. Standard audio can also be upmixed for a virtualized Atmos effect.

*Requires HDMI eARC connection between the sound bar and TV.

Advanced 3.1.2 Sound Bar

Experience the latest blockbuster movies, immersive music, and your favorite TV shows in stunning 3D sound with Dolby Atmos and the Signa S4. Its advanced seven-driver array and wireless subwoofer create a lifelike Atmos soundstage with powerful, effortless bass. With up-firing speakers supporting Atmos height channels, you’ll hear sounds move above and around you, while non-Atmos content is enhanced with a virtual Atmos experience for greater immersion.

Polk VoiceAdjust® - Hear Every Word

Tired of constantly adjusting the volume to hear dialogue in quiet scenes or losing voices when the bass hits? Polk’s VoiceAdjust™ technology ensures you catch every word. Working together with the Signa S4’s dedicated center channel, it lets you raise only the vocal levels for clear, intelligible dialogue while keeping the rest of the soundtrack perfectly balanced.

Customizable Sound - Music, Movie, Night Modes

Enjoy late-night binge-watching without disturbing your family or neighbors. Night Mode reduces bass and boosts VoiceAdjust™ so dialogue stays clear without increasing the master volume. One-button preset sound modes also optimize the Signa S4 for movies or music, delivering the best listening experience for any occasion.

Powerful Home Cinema

Bring the Movie Theater to Your Living Room with Breaktaking Immersive Sound

Eleven drivers, including two dedicated upfiring height speakers, create an expansive sound field that surrounds you from every direction, even overhead.

With its Low-Profile, Wall-Mountable Design, the Signa S4 Slips Seamlessly Into Your Setup

It’s easier than ever to fill your room with rich, immersive sound without the need for multiple speakers.

Transform Movie, TV, Music, and Game Experiences with Award-Winning Sound from an American Icon

Built on 50 years of Polk hi-fi engineering expertise, the Signa S4 is crafted for exceptional performance and lasting durability.

Never Miss A Memorable Moment Again

Polk’s patented VoiceAdjust™ speech-clarifying technology lets you boost and refine dialogue while keeping the rest of the soundtrack perfectly balanced.

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Deep Effortless Bass

The Signa S4’s powerful wireless subwoofer delivers the deep, effortless bass that Polk is known for, with impressive output for its compact size. Polk’s exclusive BassAdjust™ technology fine-tunes bass across both the sound bar and subwoofer for smooth, balanced integration. It connects automatically at start-up and can be placed almost anywhere in the room—position it up front for maximum punch or behind the couch for a more immersive rumble.

Sets Up In Seconds

Setup is simple: just connect the included HDMI or optical cable, or use the aux-in for older TVs, to enjoy outstanding sound quality with any TV, including the latest 8K Ultra-HD models. The Signa S4 is pre-programmed to work with most TV remotes and pairs easily with your mobile device via Bluetooth for music streaming. Its slim, low-profile design won’t block your TV or remote sensor and can also be wall-mounted for flexible placement.

Engineered to maximize 5.1 Dolby Digital decoding, delivering spacious, room-filling virtual surround sound whenever you want it.

Connect and stream music directly from your smartphone, tablet, or any other compatible device.

eARC (Enhanced Audio Return Channel) allows you to play TV audio through a single HDMI connection for a clean, simple setup. It supports HD and 3D audio formats, including Dolby TrueHD, DTS HD Master Audio, Dolby Atmos, and more.

Use Polk VoiceAdjust technology to fine-tune vocal levels from the sound bar for clear, easy-to-understand dialogue.

One-button presets let you easily switch between movie and music modes, along with a Night Mode option so you can enjoy late-night binge-watching without disturbing neighbors or family.

Comparing the Signa Series

Signa S2 Signa S3Signa S4
Dolby Digital & DTS Virtual SurroundDolby Digital & DTS virtual surround3D Audio with Dolby Atmos
BluetoothBluetooth & WiFi with Google ChromecastBluetooth
35.4" x 3.3" x 2.2"35.4" x 3.3" x 2.2"41.2" x 3.7"  x 2.4"
Simple upgrade to TV sound for small-to-medium roomsSeamless upgrade to TV sound for small-to-medium rooms for Chromecast users.Seamless 3D audio upgrade to TV sound for medium-to-large rooms.

Specifications

  • Inputs:
    -(1) HDMI (eARC) output
    -(1) optical input
    -(1) Analog 3.5mm input
    -Bluetooth
    -(1) USB-A (for firmware updates)
  • Drivers
    -Sound Bar:
    L/R Tweeter = 2 x 1" (25mm)
    L/R Mid = 2 x 4.7 x 1.6" (120mm x 40mm)
    Center Full Range = 1 x 1" (25mm)
    L/R Elevation = 2 x 2.6" (66mm)
    -Subwoofer:
    Woofer = 1 x 5.9" (15cm)

  • Dimensions
    -Sound Bar: (W x D x H): 41.2 x 3.7 x 2.4" (1046 x 95 x 60mm)
    -Subwoofer: (W x D x H): 7.9 x 12.9 x 11" (200 x 328 x 280mm)
  • What’s in the Box:
    -Sound bar
    -Subwoofer
    -Remote control
    -Power cord
    -HDMI cable
    -Optical cable
    -2x AAA batteries
    -Quick Start Guide
    -Wall-mount template
    -Wall-mount spacers

Product Details

BrandPolk Audio
ModelSigna S4
Part Number243-601
UPC747192135829
Unit of MeasureEach
Weight21.2

Product Specifications

ColorBlack

Specifications

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