How things are made, why we make the choices we make, and what we're working on.
Speaker cones are made from aluminum, Kevlar, carbon fiber, ceramic, polypropylene, and paper. Paper is the oldest and, in some circles, the least fashionable. We tried most of the others and came back to it.
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Every room changes the sound of a speaker, mostly below 300 Hz. Walls and corners reinforce some bass notes and cancel others, so a speaker that measures flat in a lab can sound boomy at 60 Hz and hollow at 120 Hz on your bookshelf.
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