Altec’s strategy with inMotion Air turns out to be markedly different from the ones that rivals have pursued—at least, in some ways. As has been the case with the last two or three years of Altec speakers, inMotion Air uses an unusually shaped cabinet that deliberately aims for extra angularity wherever possible. The twin-driver speaker is angled to appear as if it’s leaning back, has an extra facet where its silver top button controls…