hi Lucky,
Possible Causes and Solutions
1. eARC vs ARC Connection
• Dolby Atmos TrueHD (uncompressed) only works through HDMI eARC.
• If your TV only has ARC (not eARC), most likely the soundbar will only receive Atmos in Dolby Digital Plus (DD+), which many devices interpret and display as Dolby Surround.
• Make sure you are using the TV’s HDMI eARC port connected to the soundbar’s HDMI eARC/ARC port.
2. TV Settings
• In your TV’s audio settings, select:
• HDMI-eARC Output: Enabled
• Digital Audio Output: Passthrough / Auto (never PCM).
• Disable any “Surround Sound Mixing” feature on the TV, as it interferes.
3. App Compatibility
• Not all apps deliver Atmos in the same way:
• Netflix → Atmos in DD+ Atmos (requires Premium plan + compatible device).
• Amazon Prime Video → Atmos in DD+ Atmos.
• Disney+ and Apple TV+ → usually provide Atmos without issues.
• Ensure your TV/device shows the Dolby Atmos logo within the app before playback.
4. Source Device
• If you’re using an external device (e.g., Fire TV Stick 4K, Apple TV 4K, Nvidia Shield), connect it directly to the soundbar, and then connect the soundbar to the TV (HDMI IN → HDMI OUT eARC). This avoids TV limitations.
5. Soundbar Display Interpretation
• Some soundbars do not display “Atmos” even when playing it. They may show “Dolby Surround” or “Dolby Audio.”
• To confirm, check in the ULTIMEA app or in your TV/device’s information menus whether Atmos is actually being sent.

Conclusion:
Most likely, your TV is sending Atmos in compressed Dolby Digital Plus, and the soundbar interprets it as “Dolby Surround.” To ensure true Atmos, connect a compatible external source directly to the soundbar, and make sure the HDMI cable is eARC certified.
I hope it helps you

