sirspeedy: If you want, you can send me a disc or two and i can trim them for you. That is all that i will do though, as i do NOT believe that markering them up is beneficial. In fact, in my experience, it has been a drawback. Anything that you want to do after that is obviously at your discretion. The only thing that i ask is that you include return postage fees if / when you ship the discs to me. Sean > |
sirspeedy70680@earthlink.net, Here are a few more comments on the subject. http://forum.audiogon.com/cgi-bin/fr.pl?ddgtl&1051384332&openfrom . Jim |
Anybody: I've never messed around with treating CDs in any way. But to those who've found a difference (good or bad) treating them with markers, how exactly should I go about this tweak if I want to experiment? I'll burn 2 copies of a test disk, treat one, and compare the treated and untreated versions and post back here. Albert: You say Krell confirmed your finding that "overhead halogen lights, shining through the Plexiglas lid of their MD10 CD transport, affected the bit stream to the D-to-A converter". This implies that they actually found a change in the measured datastream, and also that they controlled for any effect that such lighting fixtures may have on the powerline (presumably by measuring the data with the lights on, versus with the lights still on, but blocked from shining into the player). I hope that is the case, otherwise it seems to me no causal link could be established. Of course, as you also indicated, either way this probably has little relevance for the vast majority of disk-players made. Mlsstl: You wrote "I've also compared the audio quality of CD's to bit-for-bit verified hard drive copies (which involve zero light of any kind) and heard no differences". While I can't do the bit-verification thing, using my Alesis MasterLink with its digital output fed to a Theta DAC, I've compared the 'live' playback of CDs with that of the same CDs ripped to the unit's internal hard-drive, and they don't sound the same (the hard-drive sounds better -- but both sound inferior to the same CDs played 'live' on a Theta transport). |
Is it possible that the Audiodesksysteme treatment improves the timing of the digital raw data, i.e. the jitter becomes less if treated CD's are played? For the owners of this device and PC w/ digital out & DAC, may I suggest an experiment: rip a treated and untreated CDs to the harddrive, do a bit comparison, and send the ripped track file from the PC to the DAC. Do they still sound different? From what I read and my understanding of optical storage, I suspect the difference only arises during real-time playing. |
