Sonos Arc Soundbar Audio Delay with New TVs
- eARC implementation differences in 2026 TVs
- TV audio processing delays
- HDMI handshake timing issues
Problem Description
Your Sonos Arc soundbar has noticeable audio delay or lip sync issues when connected to 2026 model TVs. Audio lags behind video making dialogue appear out of sync especially during fast action scenes.
Symptoms
- Audio behind video by 100-200ms
- Lip sync issues with dialogue
- Delay worse with Dolby Atmos content
- Audio sync problems started with new TV
- Some apps worse than others for delay
- Delay not present on older TV models
Recognize these? Here's what usually causes it.
Common Causes
- eARC implementation differences in 2026 TVs
- TV audio processing delays
- HDMI handshake timing issues
- Dolby Atmos processing latency
- TV firmware audio bugs
- CEC communication conflicts
Most fixes happen in the first 3 steps.
Do not adjust Sonos Arc audio delay settings unless TV adjustments fail as this affects all audio sources not just the problematic TV.
Step-by-Step Solution
Adjust TV Audio Delay Compensation
Access TV audio settings and look for Audio Delay Lip Sync or A/V Sync options. Reduce audio delay by 100-200ms or until lip sync matches. Test with dialogue-heavy content to verify synchronization.
Update TV and Sonos Firmware
Update TV firmware through settings menu as 2026 TV models have had multiple eARC compatibility updates. Also update Sonos Arc through Sonos app Settings > System > System Updates.
Disable TV Audio Processing
Turn off TV audio enhancement features like dialogue enhancement bass boost or surround sound processing. These add latency that conflicts with Sonos Arc processing causing cumulative audio delay.
Reset HDMI eARC Connection
Unplug Sonos Arc from TV eARC port wait 30 seconds then reconnect. Power cycle both TV and Sonos Arc to reset HDMI handshake and establish fresh eARC connection with proper timing.
Try Different HDMI Port
If TV has multiple HDMI eARC ports try connecting to different port. Some 2026 TV models have varying eARC implementation quality between ports affecting audio timing.
Quick Solutions
Still having issues? This is usually the deeper cause below.
If this comes back after following these steps, check whether a recent app or firmware update reset a default setting — the fix works, but the setting gets reverted silently.
eARC compatibility varies significantly between TV manufacturers and models. Some combinations work better than others with Sonos Arc.
Notification delays over 2 minutes are almost never the device's fault — background app restrictions quietly re-enable themselves after every OS update.
- eARC implementation differences in 2026 TVs
- TV audio processing delays
- HDMI handshake timing issues
- Dolby Atmos processing latency
- TV firmware audio bugs
Before you go — try one of these (they fix most cases).
Most popular upgrades chosen by Sonos Arc owners.
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Official Manufacturer Manual
Sonos provides official product documentation through their online manual rather than downloadable PDF. Access setup guides, troubleshooting steps, and product specifications for your Sonos Arc.
Source: sonos.com
Need More Help? Sonos Support
Note: The contact information below connects you directly to Sonos's official customer support team, not Trunetto. They can help with warranty claims, device replacements, and advanced technical issues.
