Polk Signa S4 Sound Bar with Wireless Subwoofer
Best cinematic upgrade for those seeking simple, immersive home theater audio.
Elevate your home entertainment with the Polk Signa S4 sound bar and wireless subwoofer. This system delivers a significant audio upgrade, offering immersive surround sound and crystal-clear dialogue thanks to patented VoiceAdjust technology. Enjoy deep, resonant bass from the included wireless subwoofer, creating a true cinematic experience. Its slim, low-profile design fits seamlessly in front of your TV or can be wall-mounted. Setup is effortless with a single HDMI ARC connection, ensuring compatibility with most 4K and HD TVs for an enhanced audio journey.
$249.00
Owner Satisfaction
4.5
/ 5
Category Rank
91
/ 704
#91 in Home Theater Systems
Price vs Category Average
-72%
Below average
Sound Bar Dimensions
35.43.32.2
/ " x " x "
Who it's for
- Movie lovers seeking a realistic 3D cinematic soundstage
- Viewers who struggle to hear dialogue in action movies
- Users wanting a simple, plug-and-play home theater upgrade
Who should skip it
- Bass enthusiasts needing room-shaking power for large spaces
- Smart home users requiring Wi-Fi streaming and multi-room connectivity
- Tech-focused buyers who prefer detailed visual feedback on settings
Performance breakdown
Dialogue Clarity
VoiceAdjust technology keeps speech crisp even during intense action sequences.
Bass Impact
The wireless subwoofer delivers deep, resonant lows that anchor cinematic soundscapes.
Setup Simplicity
Single-cable HDMI ARC connection makes installation effortless for any skill level.
Form Factor
Low-profile design tucks neatly under most TVs without obstructing the screen.
Surround Immersion
Virtual processing creates a wide soundstage without needing extra rear speakers.
Connectivity Versatility
Bluetooth and HDMI ARC provide reliable options for both media and music.
Key Specs
Sound Bar Dimensions
35.4" x 3.3" x 2.2"
Driver Array
4 drivers
Subwoofer
5.25" wireless subwoofer
Audio Decoding
Dolby Digital & DTS virtual surround
Connectivity
HDMI Audio Return Channel (ARC)
TV Compatibility
Works with 4K and HD TVs
Included Accessories
HDMI cable
Wireless Connectivity
Bluetooth
Features
- Room-filling surround sound without extra speakers
- Clear dialogue with adjustable VoiceAdjust technology
- Deep bass from a wireless subwoofer
- Simple setup with single HDMI ARC connection
- Optimized sound modes for movies and music
- Night Mode for late-night viewing
- Low-profile design for easy placement
- Universal compatibility with most TVs
What customers say
The Polk Signa S4 is highly praised for its exceptional value and immersive sound. Its Dolby Atmos technology creates a convincing three dimensional soundstage, enhancing entertainment. Polk's VoiceAdjust feature effectively boosts dialogue clarity, addressing a common audio frustration. The wireless subwoofer provides powerful, deep bass with easy integration. Setup is quick and straightforward, leading to high initial satisfaction. While the mid range may not match pricier systems, the Signa S4 offers premium features and superior clarity that significantly exceed expectations for its price point, making it a standout choice.
Know before you buy
No, this is a standalone soundbar system. It connects directly to your TV via a single HDMI ARC cable, so you do not need an external receiver.
The Signa S4 has a low-profile design measuring only 2.2 inches in height. It is specifically engineered to sit in front of most TVs without obstructing the screen or the infrared remote sensor.
VoiceAdjust allows you to independently control the volume of the vocal tracks within your content. This makes dialogue clearer and easier to hear without needing to turn up the overall volume of the entire system.
The subwoofer connects to the soundbar wirelessly, meaning you don't need to run a cable across your room. However, it still requires a connection to a standard wall power outlet.
Yes, the system features built-in Bluetooth connectivity. You can easily pair your smartphone, tablet, or laptop to stream music directly to the soundbar.
Night Mode lowers the intensity of the bass and enhances dialogue clarity at lower volume levels. It is designed to keep your audio experience balanced so you can enjoy movies late at night without disturbing others in the house.
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