One baffle with the driver cutouts. The woofer cutouts are 4-3/4". The tweeter is 3-1/8". I used a router because I have one and it's easier than using a skil saw, but the cutouts don't have to be perfectly round, so a skil saw will work fine. Just draw the correct size circle with a compass, drill a 3/8" hole somewhere inside the circle, and start cutting. Be sure to use a blade that will permit you to do the smaller tweeter cutout.