Sony FDR-AX43 Help Manual page 325

Help Guide
Digital 4K Video Camera Recorder
FDR-AX43/AX45/AX60
No sound or only a quiet sound is heard during playback.
Turn up the volume.
If you turn the volume down to the minimum level by adjusting in [Audio Rec Level], the sound of movies cannot be
recorded.
Sounds are not recorded while shooting with [Smth Slw REC] or [Golf Shot].
Related Topic
Volume
Audio Rec Level
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