within the CD player spins the disc to a scanning velocity of 1.2-1.4 m/s (constant linear velocity, CLV)--equivalent to approximately 500 RPM at the inside of the disc, and approximately 200 RPM at the outside edge. The track on the CD begins at the inside and spirals outward so a disc played from beginning to end slows its rotation rate during playback.

The program area is 86.05 cm² and the length of the recordable spiral is With a scanning speed of 1.2 m/s,