[s-cars] creating CDs for the Audi/Bose system

[Rokas Reipa]

FWIW I have never been able to play an audio CD burned on a CD-RW on any
of my home/car CD-players. I guess it varies with the manufacturer. I have
not
tried the new CD-RW-compatible players. As far as my 95.5 S6, I use
Verbatim Bulk(100pk)CD-R's in the 6-cd changer with absolutely no
problems. I
have noticed that the changer is very sensitive to scratches and the
Verbatims get scratched quite easily. My girlfriend's dodge neon will not
play
ANY CD-R's, no matter the manufacturer. Interesting, considering both of
our cars are about the same vintage.

Regards,

Rokas


On Fri, 10 Oct 2003, Igor Kessel wrote:

> Olek wrote:
> > Close, very close to true.
> >
> > It is a common knowledge that CD's are burned and read by using a laser beam (ok, factory
> > CD's are made by stamping, but master stamp is burned by a laser anyway).
> >
> > The laser frequency have to mach in burner/player in order to get reliable player.
> > And those frequencies are different for plain CD's, CDR's and CRRW's.
> > I do not remember the numbers, but frequencies for CD and CDR are relatively far apart,
> > and frequency for CDRW is in between.
> >
> > Consequence: new players that are being advertised as CDR/CDRW compatible have 2 (or sometimes
> > 3) lasers to be able to operate on all types of media. Old (and new but cheaper) players
> > have only one laser that they are trying to use for all the medias. And here result is
> > unpredictable: some players may handle it better than others, they might like some media
> > more etc etc. Since laser frequency used to burn CDRW is closer to plain CD frequency than
> > CDR, there are higher chances to play CDRW in old/cheaper players than CDR.
> >
> > Bottomline: try using CDRW. If your problem will go away - than you know what is
> > happening, right?
> >
> > Disclaimer: I am not working in CD industry, so all this information is truely AFAIK.
>
>
> That's a very interesting piece of info, Olek. Thank you.
> It explains why my ancient 4x oversampling Denon CD player (made ca.
> 1988) sometimes refuses to read home-made Cds.
> OTOH I have almost no problems playing them in the 6-disk OEM player
> (made by Alpine, if I understand it correclty) in my '97 UrS6 .
>
> --
> Igor Kessel
> two turbo quattros
>
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