A probably, this may help:
With speaker measurement, its recommended & I’ve always used C weighting for testing speakers in room. Its what is shown in www & magazine test response graphics.
A-Weighting follows a curve that represents the human hearing range & sensitivity.
C-Weighting represents human hearing at higher volume where we become more sensitive to the lower frequencies.
I’ve written ‘C weighting, Slow response’ on the instruction booklet that lives with my dB meter because I grew weary of forgetting and having to Google it afresh every time!
Thanks, @Mike-B, for reminding me why C is preferred!
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