In case anyone is wondering WHY the CK hub sounds like that, this is a pretty cool video that shows the inner workings of several different brands of hubs, with CK at the end. The CK hub doesn't have "pawls" at all, but instead two clutch plates of sorts, with angled teeth that mesh when they're pressed together. And the outer plate inside the freehub splined body has helical gear teeth, with matching teeth inside the splined body, so that the more torque applied to the cassette, the tighter the clutch plates mesh together.

The signature sound is those clutch plates spinning past one another. Pretty neat.