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Polk Signa S4, Dolby Atmos 3.1.2 sound bar and Bluetooth

The American speaker manufacturer is expanding its range of Signa soundbars with a 3.1.2 model featuring Dolby Atmos compatibility and an affordable wireless subwoofer, the Polk Audio Signa S4.

Sound bar with a length of a hair greater than 1 m (1046 mm to be precise), the Polk Audio Signa S4 has everything necessary to advantageously transcribe the sound of a television or, via its Bluetooth compatibility, the audio content of a suitable peripheral: tablet, smartphone, game console, computer…

Details of the specifications

Technically, the Polk Audio Signa S4 incorporates seven speakers: two 25 mm tweeters for the stereo channels, two 120 x 40 mm ovoid-shaped Racetrack midrange still for the stereo channels, a 25 mm full-range speaker for the center channel, plus two HP Up-Firing 66 mm for the Height channels. To this must be added a wireless subwoofer with a 15-centimeter membrane. The total power, delivered by a digital amplification, is not specified. Namely, the Polk Audio Signa S4 is the brand's first Dolby Atmos soundbar.

We also note the presence of four sound modes: Movies, Music and Night. Likewise, the Polk Voice-Adjust technology guarantees voices of absolute clarity so as not to miss a single word of the dialogues on the other hand.

Connectivity and design

The connection has an optical input and an auxiliary 3.5 mm mini-jack to connect an external sound source. Plus an HDMI CEC eARC output to retrieve the sound of channels broadcast by the television.

The USB-A port is only for firmware updates. To return to the design, in addition to a contained length, the Polk Audio Signa S4 has a height of 6 cm to be easily housed under the television. It is of course possible to fix it to the wall.

Immediate availability. Indicative price: 349 euros.

Reminder of the key features of the Polk Signa S4:

• Type: soundbar

• System: 3.1.2

• Total power: NC

• Loudspeaker ( s): two 25 mm tweeters for the stereo channels, two Racetrack 120 x 40 mm ovoid midrange, still for the stereo channels, a 25 mm wideband speaker for the central channel, plus two 66 mm HP Up-Firing for Height channels

• Subwoofer: yes, external wireless (153 cm woofer)

• Technology: Polk Voice-Adjust

• Bluetooth compatibility

• eARC compatibility

• Connections: 1 HDMI CEC 2.0 output, 1 optical input, 1 3.5 mm mini-jack input

• Dolby Atmos decoder

• Dolby Digital decoder

• Dolby Digital Plus decoder

• Dolby TrueHD decoder

• Dimensions (W x H x D, mm): 1046 x 95 x 60 mm, 200 x 328 x 280 mm for the subwoofer