Not sure you test it the way I do but every MBP I tried has that and Air not.
This difference is often mentioned in this forum too.
Like for example here:
https://forums.macrumors.com/thread...ss.2269417/page-2?post=29357594#post-29357594
and here
Code:
https://www.reddit.com/r/macbookpro/comments/go2c1v/macbook_pro_2020_trackpad_hollow_sound/
It is very noticeable if you can try both MBP and MBA at home.
Air is just more solid.
I haven't seen that much elsewhere than specs, even in Notebookcheck tests Air usually scored better for speakers.
I tested Air 2018 and MBP 2019 side by side, very obvious difference. Sound is very tinny on MBP with almost no bass while Air is more pleasing and fuller sound with some bass too. Also my MBA M1 was huge improvement over my MBP 2019. Based on Ifixit teardowns the speakers have not changed during this time, so M1's are still based on the same speakers as before.
Yeah, but what can you do if all MBA's have that?
Did you try the "fog" test too? Depending on light, it may be hard to notice otherwise. Took me almost a week to notice for the first time but once noticed it, I find it easily under certain light and angle.
Is yours silver or space gray?