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Polk Audio Signa S3 · Polk Audio
Polk Audio · Signa
Signa S3
A stereo soundbar and wireless subwoofer system with Chromecast music streaming, HDMI ARC and dialogue adjustment.
- Type
- Soundbar
- Atmos
- No
- Connects by
- Wi-Fi and Bluetooth
- Battery
- –
- Weight
- –
What reviewers say
Both reviewers praise clear dialogue, useful VoiceAdjust controls and Chromecast streaming while finding surround immersion limited. AVForums enjoys energetic music and well-integrated, punchy bass, recommending the value. GearLab finds bass definition weaker and better-sounding alternatives for the money, and needed extra help with Wi-Fi setup. AVForums also criticises the LED-only status display.
From avforums.com and techgearlab.com
Specifications
Report a wrong or missing specSound
- Type
- Soundbar
- Channels
- 2.1
- Dolby Atmos
- No
- Drivers
- Two 1.25 × 4.4 in oval midrange drivers and two 1 in tweeters; ported wireless subwoofer has a 5.25 in driver. Maker sheet's 165 mm parenthesis conflicts with the current maker table's 13.34 cm.
- Frequency response
- 45 Hz–20 kHz system response (maker; no tolerance published)
- Audio formats
- Dolby Digital 5.1 decoding and PCM over HDMI ARC or optical, reproduced through a stereo 2.1 system; no Dolby Atmos or DTS Virtual:X (GearLab)
- Room tuning
- Movie, Music and Night modes; eight bass adjustment steps and three VoiceAdjust levels
Connections
- Wi-Fi
- Yes
- Bluetooth
- Yes
- AirPlay
- No
- HDMI eARC
- No
- Voice assistants
- None
- Wi-Fi
- Wi-Fi networking for Chromecast built-in; setup through the Google Home app
- Ports
- One HDMI ARC connection, Toslink optical and 3.5 mm AUX input; USB maintenance port, not normal playback; no separate HDMI video input or passthrough (AVForums)
- Streaming
- Chromecast audio from compatible music apps over Wi-Fi, plus Bluetooth playback
- Multi-room
- Google Home grouping with other Chromecast-enabled speakers
- App
- Google Home for network setup, grouping and automatic overnight firmware updates
Design
- Controls
- Top power, source, Bluetooth and volume buttons; IR remote, HDMI CEC and IR learning; four status LEDs. Google Assistant music control requires a separate compatible speaker; no built-in voice assistant.
- Mounting
- Rear keyhole hangers and supplied wall-mount spacers
- Size
- Current maker table gives soundbar 89.99 × 5.46 × 8.18 cm and subwoofer 17.07 × 34.04 × 30.99 cm, W × H × D. Maker sheet separately lists bar 898 × 56 × 83 mm and subwoofer 171 × 311 × 343 mm, with conflicting inch equivalents.
- Colours
- Black
- In the box
- Soundbar, wireless subwoofer, IR remote and AAA battery, two power cords, HDMI and optical cables, wall-mount spacers and literature (maker quick-start guide); information sheet additionally lists a soundbar power supply.
Pros and cons
Pros
- Chromecast streaming and multiroom grouping
- Included wireless subwoofer
- HDMI ARC, optical and analogue audio inputs
Cons
- No Dolby Atmos or dedicated centre channel
- No eARC or HDMI video passthrough
- USB connection is for maintenance only
Closest rivals
Model | Type | Atmos | Connects by | Battery | Weight | Released |
|---|---|---|---|---|---|---|
| Soundbar | No | Bluetooth | – | – | 2020 | |
| Soundbar | No | Bluetooth | – | 1.9 kg | 2020 | |
| Soundbar | No | Bluetooth | – | 1.6 kg | 2022 |
Sources
- polkaudio.com/en-us/product/sound-bars/signa-s3/300001.html
- polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/def…
- polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/def…
- avforums.com/reviews/polk-signa-s3-soundbar-review.18197
- techgearlab.com/reviews/audio/soundbar/polk-audio-signa-s3
Photo: Polk Audio
- Signa S3 soundbar, front: Polk Audio
- Signa S3 soundbar, rear: Polk Audio
- Signa S3 top controls close-up: Polk Audio
- Signa S3 rear HDMI ARC, optical and AUX connections: Polk Audio
- Included Signa S3 wireless subwoofer, front: Polk Audio
- Included Signa S3 wireless subwoofer, rear: Polk Audio
- Signa S3 remote control: Polk Audio


