Polk Audio Signa S4D Dolby Atmos 3.1.2 Soundbar System

The Polk Audio Signa S4D redefines what's possible from a sleek, easy-to-set-up soundbar system. Built with a powerful 3.1.2 channel configuration and integrated Dolby Atmos and DTS:X technologies, it delivers a multidimensional soundstage that fills your room with immersive, cinematic audio.

Whether you're diving into the latest blockbuster, catching up on your favorite series, or streaming playlists from your smartphone, the Signa S4D brings clarity, depth, and a dramatic sense of space to your listening experience — all without the complexity or bulk of a traditional home theater system.

Key Features

Immersive Dolby Atmos and DTS:X Performance

Step into the scene with true overhead effects and enveloping surround sound. The S4D’s upfiring speakers and advanced acoustic processing simulate a full 360° soundscape, placing you at the center of the action.

Powerful 3.1.2 Channel System with Seven-Driver Array

Engineered for clarity and power, the soundbar incorporates:

• Left, center, and right full-range channels
• Two upfiring drivers for height channels
• Dual passive radiators combined with a wireless subwoofer, delivering clean highs, articulate mids, and deep, room-shaking bass

Polk VoiceAdjust™ Technology

No more rewinding to hear what was said. VoiceAdjust enhances vocal clarity by isolating and amplifying dialogue without compromising overall sound balance — essential for modern content with mixed audio levels.

Dedicated Wireless Subwoofer

Feel the rumble without the clutter. The included 5.9" down-firing subwoofer wirelessly pairs with the soundbar, providing thunderous low-end response and flexible placement options.

Optimized Listening Modes

Tailor your experience with three preset sound modes:

• Movie Mode: Expands the soundstage for a theater-like effect
• Music Mode: Delivers full-range fidelity for audio purity
• Night Mode: Reduces bass and enhances dialogue for late-night viewing

Seamless Wireless Streaming

Bluetooth connectivity lets you stream music, podcasts, and audiobooks directly from your mobile devices — with rich, full sound that fills your space.

Plug-and-Play Setup

Enjoy home theater sound in minutes. With HDMI eARC support, setup is simple and intuitive. Just connect to your TV using the included cable, and you’re ready to go. It also supports optical input and AUX for legacy connections.

Specifications

• Soundbar Dimensions: 41.2" (Width) x 3.7" (Depth) x 2.4" (Height)
• Subwoofer Driver Size: 5.9" down-firing driver
• Audio Channels: 3.1.2 system (left, center, right, two upfiring height channels, wireless subwoofer)
• Connectivity Options:
  • HDMI eARC (for high-quality audio and simple TV control)
  • Optical input (for older TVs or alternative setups)
    • AUX input
  • Bluetooth (wireless streaming from smartphones and tablets)
• Subwoofer Type: Wireless, compact, and easy to position
• Wall Mountable: Yes — comes with wall-mounting template and hardware
• System Compatibility: Works with most TVs and streaming devices
• Voice Technology: Polk VoiceAdjust™ for enhanced dialogue clarity
• Sound Modes: Movie, Music, and Night modes
• Build: Low-profile design fits under most TVs without obstructing IR sensors