Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[feeutfo]

for the 2015 cd player/Nav.(not the changer) Just put, er, not music   on a cdr and it spits it back out. Whats the best disc to use? Or am i wasteing my time? Ta

[TheBoy]

for the 2015 cd player/Nav.(not the changer) Just put, er, not music   on a cdr and it spits it back out. Whats the best disc to use? Or am i wasteing my time? Ta

They don't like CDRs.

If music compilations, I burn at 1x on Verbatim media.

[feeutfo]

 cheers

[TheBoy]

remember, these units do not like cdrs, and yours spitting disks out suggests the laser is tired (probably due to too many cdrs )

[oceansoul]

whats the difference between CDRs and regular CDs then??

[Dave DND]

There are many differences about construction, materials used, layers etc etc, but teh main difference is that the recordable discs use much smaller "dots" and closer "Tracks" to record the data.

The older CD players were never designed to focus on something this small, and basically they are straining so hard to du so that they wear out prematurely.

This was covered in quite some detail a few months ago, maybe someone else can find and post a link to the thread?

Bottom line though, don`t use modern CDR`s on old CD players, or any OEM in Car unit pre 2005 that does not have MP3 logo on the front. MP3 units are an exception, as they have been designed to cope with the modern / computer type discs for data.

 

[dbug]

What about audio spec cdrs?  Used to sell no end of these - customers found some burnt CDRs wouldn't play in domestic/car cd players whereas these audio (studio quality) ones would.  Got a load of burnt ones myself and these appear to be ok.

[TheBoy]

What about audio spec cdrs?  Used to sell no end of these - customers found some burnt CDRs wouldn't play in domestic/car cd players whereas these audio (studio quality) ones would.  Got a load of burnt ones myself and these appear to be ok.

It would appear that any quality (read TY or Verbatim level) media seems to be better, but still more strain on laser than pressed disk.

[Dave DND]

What about audio spec cdrs?  Used to sell no end of these - customers found some burnt CDRs wouldn't play in domestic/car cd players whereas these audio (studio quality) ones would.  Got a load of burnt ones myself and these appear to be ok.

It would appear that any quality (read TY or Verbatim level) media seems to be better, but still more strain on laser than pressed disk.

Agreed, but as a general rule of thumb, any media format designed a few years after the CD player in question is unlikely to be backwards compatable with a head unit that was never designed to work with it.

[TheBoy]

What about audio spec cdrs?  Used to sell no end of these - customers found some burnt CDRs wouldn't play in domestic/car cd players whereas these audio (studio quality) ones would.  Got a load of burnt ones myself and these appear to be ok.

It would appear that any quality (read TY or Verbatim level) media seems to be better, but still more strain on laser than pressed disk.

Agreed, but as a general rule of thumb, any media format designed a few years after the CD player in question is unlikely to be backwards compatable with a head unit that was never designed to work with it.

Depends on how strict a definition of 'compatible' you use.  Most CDRs will play in most CD Players, at least for a while.  How much damage/excess wear it causes seems to be the issue here.

[Mack]

Dave DND wrote 'The older CD players were never designed to focus on something this small, and basically they are straining so hard to do so that they wear out prematurely.'

Why is this, given CD's are non-contact? Does it introduce more repositioning, rereading or error correction?

I find the burner can be important, some of the CDRs are burn on my work laptop cause issues in the car (either periods of silence or disk error messages) where as the same media burned in a home PC is OK..... mind you, different software too, so there are a few variables...

[Marks DTM Calib]

Dave DND wrote 'The older CD players were never designed to focus on something this small, and basically they are straining so hard to do so that they wear out prematurely.'

Why is this, given CD's are non-contact? Does it introduce more repositioning, rereading or error correction?

I find the burner can be important, some of the CDRs are burn on my work laptop cause issues in the car (either periods of silence or disk error messages) where as the same media burned in a home PC is OK..... mind you, different software too, so there are a few variables...

Bottom line is that the written discs are created by burning small areas of the discs. This does not create such a uniform pit (the track width and pitch is the same) as a pressed item and hence the laser has to re-position and re-focus more.

Also, CD-R's have a lower reflectivity (about half) than pressed discs (with RW's being even lower less than a quarter) so require a better PIN diode and associated Transimpedance amp setup to received the signal.

[Marks DTM Calib]

A quick check through the specs of various suppliers sudgest that Mitsui discs have the best reflectance......but thats because they have writes to phthalocyanine which is the best of the best for reflectance in this application......some other suppliers use this substance either under license or simply buy them from Mitsui!

[Marks DTM Calib]

Verbatium use an AVO die which is not quite as good from a reflectance perspective but still reasonable

[feeutfo]

so,what your basically saying is, if you want your head unit to last as long as possible dont use burnable media?
 Whats the odds of repairing a worn out lazer and associated optical parts?