New Signa S4 Soundbar with Dolby Atmos

The American company Polk Audio has released the Signa S4 soundbar. The novelty differs from the previous model with the index “3” by a pair of upward-facing speakers. With this speaker, Signa S4 is ready to play Dolby Atmos content. If the input signal is not encoded in Dolby Atmos, the novelty is able to convert the format and still please with three-dimensional sound.

Signa S4 Dolby Atmos – Soundbar in 3.1.2 configuration. There are seven drivers on board, complemented by a wireless subwoofer. In addition to the two speakers responsible for the Atmos, the S4 has a center channel speaker and left/right tweeters in conjunction with their respective broadbands.

Signa S4 Soundbar

The center channel in the Signa S4 is supported by Polk’s proprietary Voice Adjust technology for improved dialogue intelligibility. The subwoofer operates at a range of up to 10m, making it easier to install in a room. You can adjust the bass both on the subwoofer and on the soundbar.

The adjustments also include preset modes for the soundtrack of movies or music (it can also be streamed to Polk Audio Signa S4 via Bluetooth). There is also a night mode, with weakened bass and increased speech clarity.

Signa S4 Soundbar

The Polk Audio Signa S4 Dolby Atmos Soundbar is already on sale for $399.

Signa S4 Soundbar Specifications

Dimensions (W x D x H)

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


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)
Inputs(1) HDMI (eARC)
(1) Optical input
(1) Analog 3.5mm input
(1) USB-A (for firmware updates)
What’s in the Box:• 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

Signa S4 Soundbar Features

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

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