A short 4 page comic on Music On Loudspeakers. Easiest to read by clicking an image, then use Bloggers image selector at bottom of screen.
Specifically Stereo isn't something most people hear over loudspeakers anymore.
UPDATE: AUG 18 2021. For my own mix checking on a typical users system, I bought a JBL FLIP5, a mono 20W Bluetooth only speaker.