The upper speaker is low since the February update...fix this..
your feedback is very valuable to software developers
let them know directly by submitting error report via Members app → add → submit feedback
you can boost for the meantime by enabling Dolby
@Rtx1 @CharlieHowes: Can you try heading to Settings > Sounds and Vibration > Sound Quality and Effects > Dolby Atmos > On > Adapt Sound > Run through the on screen prompts to find the best sound for you. Does this help at all? If not, open the Samsung Members app > Get Help > Interactive Checks > Speaker. Does this return any errors?