| Author |
Topic: CD only plays on some players |
George Kimery
From:
Limestone, TN, USA
|
Posted 26 Jan 2003 6:54 pm |
|
| I have a CD of rhythm tracks bought from a member of this forum. It plays just fine on my rack CD player, but will not play on mine or my girlfriend's Boom Box. The Boom Boxes play all the other CD's just fine. What's going on here? I assume that the normal CD's of name acts are burned on more professional duplicating equipment and that the rhythm tracks are done in a home studio using a different process that the Boom Boxes just don't respond to. Anybody else had this problem with CD's burned at home? |
|
|
|
Jim Smith
From:
Midlothian, TX, USA
|
Posted 26 Jan 2003 7:32 pm
|
|
| The rhythm tracks you got were more than likely burned on a CDR. Not all players will play CDR's. Mostly older ones have this issue. |
|
|
|
Dave Boothroyd
From:
Staffordshire Moorlands
|
Posted 27 Jan 2003 12:50 am
|
|
Commercially produced CDs have their data stored in tiny pits pressed into the plastic, then metal plated. They are literally pressed.
CDRs are covered with a light sensitive dye which changes colour when the laser on the recorder hits it, burning a spot onto the disk. So they are "burned"
CDRWs use a dye that polarises light when you heat it up, and can be depolarised by heat and magnetism.
A pressed CD is easy to read in anything, a burned CD needs a better lens and laser, and hardly anything will read a CDRW except a special CDRW drive.
Cheers
Dave |
|
|
|
Jim Smith
From:
Midlothian, TX, USA
|
Posted 27 Jan 2003 7:23 am
|
|
I received an email this morning from a very knowledgable man, who said I could post this as "information from a friend".  quote:
The CD problem the guy has is probably CD Burn speed. Many audio CD players will not play CD's burned at higher speeds. After much experimenting, I've settled on 12X as a "standard". With 12X I've never had one come back as unplayable or skipping. Car in-dash CD players are even more sensitive and along with the CD burning speed, they can also have problems with CD's that have paper labels attached or even the color of the CD surface.
The CD-R is not an issue, it's a sales gimmick for selling CD players if they state "CD-R compatible". However, unless it specifically states, it is not CD-RW compatible and it must have additional capability to play MP3's.
[This message was edited by Jim Smith on 27 January 2003 at 07:23 AM.] |
|
|
|
Tony Prior
From:
Charlotte NC
|
Posted 27 Jan 2003 7:52 am
|
|
In too have seen some CD's burned at higher speeds in the PC CDRW recorder not work in some players..very strange..by all accounts and what I have researched speed is not supposed to be an issue..BUT..as Jerry would say " Apparently it is " !
I have actually choosen a lower burn speed, 6X , and test in two cars and a Boom Box and have good results. I have burned several and occasionally 1 or 2 from the same batch will not work in my wifes '99 Jeep Cherokee..go figure...
Now it is also possible that some blank CD's even though they may be a high quality brand, Memorex, Fuji, Sony, Verbatum..etc...may experience poor reflectability due to quality which means it may not work in some players as well.
I guess if we can buy 50 blanks for $10 we should expect some fallout...
It's a jungle out here for sure...
tp |
|
|
|
Roger Rettig
From:
Naples, FL
|
Posted 27 Jan 2003 8:55 am
|
|
My Susie has an ancient boom-box at her place of work - it plays anything she's ever put in it (including a couple of 'home-burned' efforts) - but it won't play her new 'Dixie Chicks' CD!
It plays fine on the stereo here at home....
 [This message was edited by Roger Rettig on 27 January 2003 at 08:56 AM.] |
|
|
|
Ron Page
From:
Penn Yan, NY USA
|
Posted 27 Jan 2003 9:06 am
|
|
I've been burning quite a few of my old albums on CD and I noticed some of the earlier CD's were quite suceptible to problems if they got fingerprints on the play-side of the disc. The player might try to play to disc or it might say "no disc".
I'm not certain, but it seems that slowing down the burn speed from 24X to 8X may be producing CD's less suceptible to playback problems.
My understanding is that CD players will perform some amount of error correction. I wonder if the higher burn speed -- and adding in a few fingerprints-- results in the need to do more error correction than the systems are designed for.
Incidentally, I never handle the CD's by the play side and always keep them in their cases, but pressing labels on results in fingerprints on the play side. Sometimes I forget to clean them off.
------------------
HagFan
|
|
|
|
Michael Johnstone
From:
Sylmar,Ca. USA
|
Posted 27 Jan 2003 12:42 pm
|
|
| The issue of paper labels has to do with if they're perfectly centered or not. If not,they throw the CD out of mechanical balance as it spins causing errors(not to mention wear and tear on the bearings and other mechanics of the disk drive).Most CD labeling software comes with some sort of jig to align the labels but it still requires a little care and skill to get them on right. -MJ- |
|
|
|
Michael Brebes
From:
Northridge CA
|
Posted 28 Jan 2003 9:50 am
|
|
From my experience, each model of CD-R recorder has its speeds at which it seems to record with less errors and the most stability. There is not a broad speed at which all work best. Brand of CD-R blanks can have a major impact on the quality, with certain records, while other recorders will be happy with anything that's put in them.
With older players, there are more problems with their ability to play CD-R disks, especially if they are burned with more time than the original 74 minute spec. |
|
|
|
