Headphone Acoustics Reference CD

[headphonecrazy 0]

I'll like to share a new discovery from a chinese forum on this "Reference recording cd" for Headphone Evaluation that is supposingly made on a Verbatim Blue CD-R.

[N@Z 0]

What sort of music is on there? What is supposed to be the specialty of using blue now?

[Ticky 0]

An uncanny reference to blue laser perhaps? Too bad the technology isn't out in the consumer market yet (if it is, I haven't heard about it).

 

Question though - I see blank CDs being sold at various prices. The branded ones like TDK and Maxwell are slightly more expensive, while generics are cheaper. I suspect that, unlike blank cassette tapes, there isn't any difference quality wise between those CDs or is there?

[headphonecrazy 0]

What sort of music is on there? What is supposed to be the specialty of using blue now?

Found a european site with some info :

 

http://www.highfidelitydiscs.nl/customer/p...69ce43dd354cb43

[lekguan 0]

Verbatim and blue color seems to ring a bell, the metal azo dye. And yes, the metal azo dye (verbatim and mitsubishi chemicals CD-R) is blue in color.

[N@Z 0]

So am I correct in saying, basically the Blue coloured Metal AZO dye main advantage is ensures data keeps for a very long time & burns more reliably but may have some compatability issues on some players?

[lekguan 0]

Not quite, there is another dye used by a few other manufacturers that has longer life than the AZO dye. It starts with P IIRC. Just that the AZO dye is like the flagship dye of Verbatim/Mitsubishi.

 

I don't think there is any kind of compatibilty issue of the AZO dye. This I'm not so sure. Haven't come across such problem.

 

Edit:

http://www.cdmediaworld.com/hardware/cdrom/cd_dye.shtml

http://www.cdrplanet.com/dye-layer.html <-- The dye whichs starts with P is explained why it has advantage

Edited November 27, 2003 by lekguan

[N3w_Typ3 0]

yo hey .. that will be a little kinda coslty .... i don't think there a need to go so far fopr a cd-r ( audio )

[Sipher 0]

can we get it in SG?

[N@Z 0]

N_T, why would you say that? Do they cost more than the Black CD-Rs?

Edited November 27, 2003 by N@Z

[tropicalrips 0]

the metal AZO dyes are rated as Audio grade , they are not those normal blue/green type dye, Metal Azos are very dark blue in color

 

if u compare them sound wise, the black CDRs and other normal silver or gold and even those ultima gold CDRs the difference is almost none, but if u compare the Metal Azo with the rest, u can tell the Metal Azos sound more warm/mellow, they are very good for vocals and classical music.

 

the best one are those 74min Metal Azo disc which are no longer in production, i still hav some of them they are verbatin 74min metal azo, they are also known as Disc@too disc, there's 1 generation of Yamaha CD writers that can do tatoo on CDRs but u can only see the result on the Metal Azo cause they hav the darkest color

 

metal azo disc never hav any burn problems, i think its because the chemical used is very stable when the laser is heating it, almost all of my oldest CDRs are metal AZO (6-7yrs) i think its also the first type of dye they develop for CDRs

[Q00 0]

whoa... good info here.

[tropicalrips 0]

i "backup" all my instrumental CDs on Metal AZO, they should be able to outlast the other types of Dyes

 

i hav some silver/gold disc that are only 2-3yrs old and they are already starting to show signs of chemical breakdown, u can tell when the recording side starts to change color, can see wave pattens on the Dye

[N3w_Typ3 0]

N_T, why would you say that? Do they cost more than the Black CD-Rs?

ya and is by amost one time for the black cdr price ( per piece )