Polk Signa S4D – 3.1.2 Dolby Atmos Wireless Sound Bar Speaker + Subwoofer

Five Decades of Engineering for the Perfect Home Theater Sound
Signa S4D was designed in our Acoustic Research and Development Center outside Baltimore, MD by the speaker experts at Polk. We’ve leveraged over 50 years of American hi-fi loudspeaker engineering so Signa S4D will deliver the surround sound experience you’ve always dreamed of in your home—but at a value you could never imagine.  

Dolby Atmos Certified 3.1.2 Sound Bar System
Enjoy the latest blockbuster releases, immersive music, and your favorite TV shows in the amazing 3D sound provided by Dolby Atmos* and the Signa S4D. Its advanced seven-driver array and wireless subwoofer deliver a lifelike Atmos listening experience with a huge soundstage and effortless bass. With Signa S4D, you’ll hear sounds flying overhead courtesy of up-firing speakers that support Atmos height channels, and any non-Atmos content you watch can also be enjoyed in a virtual Atmos experience. *Requires HDMI eARC connection.

Customizable Sound to Hear Every Word and More
Polk’s patented VoiceAdjust™ technology combines with Signa S4D’s dedicated center channel for clear, easy-to-understand dialogue. Bass Adjust controls bass on both the sound bar and sub, ensuring maximum impact. Plus, one-button presets for movie watching and music listening, along with Night Mode—so you won’t wake the neighbors or kids during late-night binge-watching sessions.

Sets Up In Seconds
One simple connection via the included HDMI or optical cable (or aux-in for older TVs) ensures the ultimate listening experience with virtually any TV—even the latest 8K Ultra-HD TVs. For added convenience, Signa S4D is pre-programmed to work with most TV remotes out of the box and it quickly pairs to your mobile device via Bluetooth to stream your favorite music.

Key Technologies

Dolby Atmos
Upgrade your home theater with height speakers to unleash a fully immersive 3D audio experience, or engage all speakers to create a 3D audio sensation from legacy content even without height speakers.

Bluetooth
Connect and play music directly from your smartphone, tablet or other compatible device.

HDMI eARC
eARC (Enhanced Audio Return Channel) makes playing TV audio simple with a single HDMI connection. eARC supports HD and 3D audio formats such as Dolby TrueHD, DTS HD Master Audio, Dolby Atmos and more.

Digital Inputs
Connect your audio source, such as a TV, Blu-ray player, or game console using an optical cable. This digital connection ensures high-quality audio transmission, delivering clear and accurate sound.

Flexible Connectivity
Connect audio sources such as smartphones, tablets, or MP3 players using a standard 3.5mm auxiliary cable. The aux input provides a simple and versatile way to play audio from your portable devices.

Polk VoiceAdjust™
Adjust the vocal levels from the sound bar with Polk Voice Adjust technology for clear, easy-to-understand dialogue. Never miss a word of dialogue again.

Flexible Presets
One-button presets for movie watching and music listening, along with Night Mode—so you won’t wake the neighbors or kids during late-night bingewatching sessions.

Designed in USA
Proudly engineered and designed in Baltimore, Maryland, Polk products are crafted to meet high standards of quality, performance, and reliability, ensuring a premium audio experience that is the pinnacle of American Hi-Fi.

Details & Specifications

SOUNDBAR
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)

WIRELESS SUBWOOFER
Woofer: (1) 5.9” / 15cm (Round)

GENERAL
Soundbar Dimensions: 41.2 x 3.7 x 2.4” / 1046 x 95 x 60mm
Subwoofer Dimensions: 7.9 x 12.9 x 11.0” / 200 x 328 x 280mm

INPUTS
(1) HDMI (eARC)
(1) Optical input
(1) Analog 3.5mm input
(1) USB-A (for firmware updates)
Bluetooth

INCLUDED ACCESSORIES
Sound Bar
Subwoofer
Remote Control
Sound Bar Power Cord
Subwoofer Power Cord
HDMI Cable
Optical Cable
2x AAA Batteries
Quick Start Guide
Wall Mount Template
Wall Mount Spacers