Audio Fix / setup help
Arcam AVR21: adjust early sound with the current input Lip Sync
Arcam AVR21 — adjust early sound with the current input Lip Sync. Confirm the actual setup and observed response before reporting an outcome.
Manufacturer-documented Reviewed 2026-11-09 · Revision 1
Follow these checks in Audio Fix →When this guide applies
Audio precedes the picture, rather than already arriving late.
Connection scope: HDMI / ARC / eARC audio. Symptom: Sound and picture are out of sync.
This is a documented check, not a diagnosis of your equipment. The model name does not confirm the selected input, mode, software or connected partner.
If your exact model or a required setting is unknown, use the “I don’t know” branch below. Do not apply a similarly named model’s instructions.
Checks and possible outcomes
Start at step-0. Follow the link that matches what you actually observe. Alternative branches are not a single sequence of actions.
step-0
Does the sound occur before the matching picture movement?
Extra audio delay can worsen sound already arriving late.
Look for: Confirm the stated setup or observation. Unknown stops safely.
- If Yes / confirmed → Is the intended input selected in Input Config?
- If No / cannot confirm → Stop and retain the actual observations
- If I do not know / cannot check → A required fact is unknown
- Manufacturer-documented Arcam AVR21 official manual ↗PDF pages 33 — Per-input Lip Sync adds0–250milliseconds audio delay and corrects delayed video, not audio already late.Known HDMI source with audio early; exact input selected. · Source checked 2026-11-09
step-1
Is the intended input selected in Input Config?
Each input keeps its own setting; do not adjust another source.
Look for: Confirm the stated setup or observation. Unknown stops safely.
- If Yes / confirmed → May its old Lip Sync value be noted and changed temporarily?
- If No / cannot confirm → Stop and retain the actual observations
- If I do not know / cannot check → A required fact is unknown
- Manufacturer-documented Arcam AVR21 official manual ↗PDF pages 33 — Per-input Lip Sync adds0–250milliseconds audio delay and corrects delayed video, not audio already late.Known HDMI source with audio early; exact input selected. · Source checked 2026-11-09
step-2
May its old Lip Sync value be noted and changed temporarily?
Retain the original value so a worse result can be reversed.
Look for: Confirm the stated setup or observation. Unknown stops safely.
- If Yes / confirmed → Add a small supported Lip Sync delay within 0–250 ms
- If No / cannot confirm → Stop and retain the actual observations
- If I do not know / cannot check → A required fact is unknown
- Manufacturer-documented Arcam AVR21 official manual ↗PDF pages 33 — Per-input Lip Sync adds0–250milliseconds audio delay and corrects delayed video, not audio already late.Known HDMI source with audio early; exact input selected. · Source checked 2026-11-09
step-3
Add a small supported Lip Sync delay within 0–250 ms
Compare the same scene; do not assume a universal TV automatic-sync setting.
Look for: Perform only the stated operation and confirm whether it was possible.
- If Yes / confirmed → Is the same scene closer to synchronisation?
- If No / cannot confirm → Stop and retain the actual observations
- If I do not know / cannot check → A required fact is unknown
- Manufacturer-documented Arcam AVR21 official manual ↗PDF pages 33 — Per-input Lip Sync adds0–250milliseconds audio delay and corrects delayed video, not audio already late.Known HDMI source with audio early; exact input selected. · Source checked 2026-11-09
step-4
Is the same scene closer to synchronisation?
A changed delay number alone is not a playback result.
Look for: Confirm the stated setup or observation. Unknown stops safely.
- If Yes / confirmed → Checks completed — report what happened
- If No / cannot confirm → Stop and retain the actual observations
- If I do not know / cannot check → A required fact is unknown
- Manufacturer-documented Arcam AVR21 official manual ↗PDF pages 33 — Per-input Lip Sync adds0–250milliseconds audio delay and corrects delayed video, not audio already late.Known HDMI source with audio early; exact input selected. · Source checked 2026-11-09
Possible result
Checks completed — report what happened
Completion is not an automatic solved result. Report your actual outcome; no Audio Review physical test or measured repair is claimed.
steps completed
Reaching this result does not mean the issue is solved. Only your own feedback can report improvement.
Possible result
Stop and retain the actual observations
A required fact or response was not confirmed. Consult the exact product/partner documentation or official support. Do not escalate to a reset, update installation, internal repair or unsafe wiring change.
next support
Reaching this result does not mean the issue is solved. Only your own feedback can report improvement.
Possible result
A required fact is unknown
Confirm the actual model, source, partner capability and current state before continuing. Do not guess a menu or interrupt a live session/update.
insufficient data
Reaching this result does not mean the issue is solved. Only your own feedback can report improvement.