I was able to find the speaker module I remembered seeing >1 year ago:
If I recall correctly, reproduction of bass frequencies require a good amount of air movement, which can be obtained by a higher cone surface area or higher excursion. It looks like this speaker has both, looking at these video:
For reference, the below speaker looks like the 53mm speaker I found when I first did audio research, and the excursion is drastically less:
It also looks nicer and higher quality. I know the aesthetic of the speaker is of little importance, but it's something I wanted to mention. It just feels like using higher quality ingredients.
I also would like to believe a full-length speaker cone would emulate spacial sounds more accurately than a smaller one.
This is the speaker (or one of its similar derivatives) in their enclosures and it sounds like it rip 'n' chews (it sounds good). The test songs are nice because I can hear the response across the enitre range, from bass beats to vocals to violin strums:
Yeah... ok... I know how I said I don't care that much about audio quality in the previous audio log but that was just me trying (and failing) to reduce my expectations. I do need some quality, just perhaps not enthusiast grade.
Eye tracking system
On the eyetracking side of this project, I think I've found a very good lens for this applicaiton: