DualDisc -- in what way not RB??

[robert]

i've searched threads and web, but haven't found an explanation of what not RedBook means for DD? is it just the physical dimensions, or is it also the datastream, which is bad??

 

[Welly Wu]

The problem with conventional Red Book CDs and DualDiscs is that the "CD compatible side" of a DD has different pit length / depth configuration than a plain vanilla CD. That may cause certain Red Book CD players to mess up reading the data correctly especially slot loading car CD players or vertical loading CD players (which I admit are rare). The other problem with DDs is that the thickness is 1.48 mm which can cause the discs to jam in those slot loading CD players and it can cause the transport mechanism to work overtime to spin the DD to regular Red Book CD standards.

Beware! Some DDs play fine for some while others can not play the same titles in their configurations! For example, I had no problem playing Bruce Springsteen's Devils & Dust DD, but I had major problems trying to get Rob Thomas' Something to Be DD to play in my source component. The latter DD kept skipping badly and I was worried about damaging my $2800 USD highly modified universal DVD player.

However, the DVD-Video compliant side works fine; it's just that not all DDs include the same music tracks on this side and you need a DVD-Video player. For those that own universal DVD players, they're fine with playing this side but it kind of sucks that the "CD compatible" side doesn't work out too well for enough people.

 

[Oliver :)]

Quote:

Originally Posted by robert i've searched threads and web, but haven't found an explanation of what not RedBook means for DD? is it just the physical dimensions, or is it also the datastream, which is bad??

The "CD compatible" side is not as CD compatible as you might wish. You do not get a fully redbook compliant layer as with SACD Hybrid. You get something round that carries data which should be readable by a CDDA drive, but since they tell you it is not a CDDA it does not have to work, and they might also infect it with whatever perverted DRM scheme they like in order to keep you from ripping that layer on your PC.

 

[robert]

Quote:

Originally Posted by Welly Wu The problem with conventional Red Book CDs and DualDiscs is that the "CD compatible side" of a DD has different pit length / depth configuration than a plain vanilla CD. That may cause certain Red Book CD players to mess up reading the data correctly especially slot loading car CD players or vertical loading CD players (which I admit are rare).

ok, so they (record company oligopolists/scum) deliberately make bad discs. i guess they figure that will get us to buy new machines??? and they wonder why people rip discs??? sphincters.