These Cambridge Audio T300 Towers are priced to move.
Thick Mahogany cabinets are used to reduce vibration and coloration. Each speaker has two 4 inch midranges and a 1 inch soft dome tweeter in a dipole configuration.
Each speaker also has a 10 inch woofer with a massive magnet mated with a 10 inch passive radiator, which combined can deliver bass you can feel (if you want to).
Nothing on Craigslist will beat these speakers for the money, and they make wonderful home theater speakers as well.