More to explore:
Audyssey Audio Dock Air - tweeters, woofers & passive bass radiators offering uncompressed, wireless streaming. Unlike some Airplay speakers, the Audyssey BassXT brings the low end with enough bump in the trunk for bass heavy tunes, perfect for spring-summer BBQs. Nice.
Ratio, by Michael Ruhlman. Describes the ratios used in cooking and baking so that once you know those, you can make anything.