What's the nominal speed (x1) of a CD? Is it 300 or 600 RPM? Assuming it's 600 RPM, 50x is then 30000 RPM. At that speed, a disc of that diameter has to be very well balanced.
I have a Ricoh DVD/CD drive in the PC, at 48x, I think. When I put the Amithlon CD in it, I always have to rotate the disc on the tray, spin it up and try again in a new spot until I get a place that is quiet. If it's out of balance, it makes an awful noise that can't be any good to the bearings or the disc.
tony
