For the audiophiles, here are front and back views (top and bottom, respectively) of the separated drivers.

Apple's switch to paper-based speaker cones may be the source of their advertised improved low and mid-range response.

We also discovered that the speaker basket has a much more refined look than previous models (see comparison in next step), with a fine mesh covering the back and symmetrically-placed vents.

The basket is a critical component, as it must be rigid to maintain consistent sound quality while still being open enough to not inhibit movement of air behind the vibrating diaphragm.