Polk Audio MagniFi Max AX SR 7.1.2 Channel Soundbar System with Dolby Atmos/DTS:X, Wireless Surround Speakers, and 10" Subwoofer

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Model: 300543-01-00-101 UPC: 747192136956 Item: 178389

Product Information

Trust Your Sound to the Speaker Experts

Polk’s flagship 7.1.2 surround system brings movies, TV, music, and games to life in immersive Dolby Atmos and DTS:X 3D audio, thanks to an SDA-optimized 11-speaker sound bar with up-firing height speakers, wireless surround speakers, and a powerful 10” subwoofer. Plus, stream music via Apple AirPlay 2, Chromecast, Spotify Connect, and Bluetooth.


  • True immersion: 7.1.2 Dolby Atmos & DTS:X surround sound
  • Huge soundfield: 11-driver sound bar, two surrounds, and patented SDA technology
  • Stream music: AirPlay 2, Chromecast, Spotify Connect, Bluetooth
  • Hear every word: patented Polk VoiceAdjust™ technology
  • Feel the bass: powerful 10” wireless down-firing subwoofer
  • Customize sound: Music, Movie, TV, Night audio modes
  • Easy-to-understand: simple front-panel OLED Display
  • Works with any TV: 3-in/1-out HDMI (eARC/ARC), optical
  • Roku TV Ready: easy setup and control
  • Place below TV or wall-mount with included template and spacers

Dolby Atmos, All Around You

An 11-driver array with built-in height drivers and two wireless surrounds works with Polk’s patented SDA technology to deliver immersive 7.1.2 Dolby Atmos and DTS:X 3D sound with a lifelike, expansive soundstage.

Your Music Streaming Hub

Enjoy high-quality Wi-Fi music streaming from your phone, tablet, or computer with Apple AirPlay 2, Google Chromecast, Spotify Connect, or any Works with Alexaenabled music service. Connects via Bluetooth, too.

Deep, Impactful Bass

The 10” down-firing MagniFi Max AX SR subwoofer—Polk's most powerful sound bar sub—delivers the deep, effortless bass that Polk is famous for. Wireless connection allows for convenient placement. Dial in the ultimate sound with BassAdjust.

Polk VoiceAdjust™

Never miss a word of dialogue again. Polk’s patented VoiceAdjust™ speech-clarifying technology works with MagniFi Max AX SR’s optimized center channel speaker to elevate the volume of voices over other elements of the soundtrack.

Movie, TV, Music, and Night Modes

Optimize bass, clarity, and soundstage for movies, TV, or music. Night Mode turns up dialogue and turns down bass for late-night watching without disturbing the neighbors.

3-in/1-out 4K HDMI with eARC

Simplify your setup with 3-in/1-out high-speed, high-bandwidth 4K HDMI connectivity and input switching. Connect gaming consoles, Blu-ray players, steaming boxes, and more to enjoy them with MagniFi Max AX SR’s superior sound quality. Includes optical input for connecting older devices.

Easy Setup and Universal Compatibility

Set up with any TV via HDMI eARC or optical connections (HDMI cable included). Intuitive front-panel OLED display dims when not in use. Roku TV Ready for easy configuration and control. Sits on your TV console or is wall-mountable. An included remote works with most TVs out of the box.

Experience True Surround Sound

Experience the full surround sound capabilities of the MagniFi Max AX SR 7.1.2 sound bar system thanks to the included wireless surround speakers.



  • Inputs & Outputs
    • (3) HDMI in
    • (1) HDMI eArc
    • (1) Optical in
    • (1) USB-A (firmware updates)
  • Streaming
    • Wi-Fi (802.11 a/n/ac)
    • Google Chromecast For Audio
    • Apple AirPlay2
    • Spotify Connect
    • Works with Alexa
    • Bluetooth 5.0
  • Sound Bar
    • Left/Right Channels
      • (4) 1” x 3” (25mm x 76mm) racetrack mid-woofer drivers
      • (2) 0.75” (19mm) soft dome tweeters
    • Center Channel
      • (2) 1” x 2.5” (25mm x 64mm) racetrack mid-woofer drivers
      • (1) 0.75” (19mm) soft dome tweeter
    • Left/Right Height Channels: (2) 2.5” full range drivers
  • Surround Speakers
    • (1) 3” (73mm) full range driver
  • Subwoofer
    • (1) 10” Woofer
  • Dimensions (W x H x D)
    • Sound Bar: 4.6” x 2.8” x 45”
    • Subwoofer: 16” x 15.7” x 11.9”
    • Surround Speakers: 4.1” x 4.5” x 7.8”
  • Weight
    • Sound Bar: 12.85 lb
    • Subwoofer: 26.3 lb
    • Surround Speakers1.83 lb

What's in the Box

What’s in the Box

  • MagniFi Max AX SR 7.1.2 Channel Soundbar System with Dolby Atmos/DTS:X
    • (1) Soundbar
    • (2) Wireless Surround Speakers
    • (1) 10" Subwoofer
  • Remote Control
  • Soundbar Power Supply
  • Soundbar Power Cord
  • (2) Surround Speaker Power Supply
  • Subwoofer Power Cord
  • HDMI Cable
  • (2) AAA Batteries
  • Quick Start Guide
  • Wall-Mount Template
  • Mounting Spacers
  • Registration Card
  • Safety Doc


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Can you add surround speakers more than 2?
A shopper on May 4, 2023
  Thanks for your inquiry. The MagniFi MAX AX SR will only accommodate the two included surround speakers.