Quote:
Originally Posted by Djoel 
I stop buying Dual Disc because of playability issues with my Denon uni player 3910. My non technological answer to the problem was I thought they were too thick.
Djoel
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That may be part of it, but reflectivity issues may also be part of it. CDs are made with a single poly disc, the reflective layer is on the back of the disc. DVDs are made with a sandwich of 2 poly discs, and all the good stuff is in the middle.
So there's really no spec for a dual-disc sandwich. I've never had one, but they could be made with a 2-disc sandwich or a 3-disc.