cliveb;213817 Wrote: > Pinholes in the aluminium coating on CDs was pretty common back then. > They were there from the start - it's not an ageing thing. I'd guess > that perhaps the sputtering technology used wasn't quite perfected at > the time.
Although there is also the phenomena of disc rot which is real and document. (And leaves pin prick sized holes throughout the disc.) This is supposedly from a manufacturing defect (at least in the admitted case of Philips-DuPont) and has been corrected. It is certainly possible that other manufacturers had similar issues (and manufacturing defects seem to be the problem with various DVD-and-high-def discs as well). A CD with advanced discrot will often not play at all: the CD spec is not designed for shotgun-blasting-pinholes, and eventually enough of the reflective layer will be eaten that there is no way to correct the lost data. But all this is very offtopic. -- snarlydwarf ------------------------------------------------------------------------ snarlydwarf's Profile: http://forums.slimdevices.com/member.php?userid=1179 View this thread: http://forums.slimdevices.com/showthread.php?t=36503 _______________________________________________ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
