I agree with your comments about AI and have performed similar testing with a slight difference. In every test, AI always produced cleaner treble response ( very noticeable on cymbals as you mentioned ) with an overall more "liquid", "focused" and "unstrained" sound when compared to an identical untreated disc. It also made discs that were damaged or barely readable perform like new with very limited error correction taking place.
The "difference" that i mention is that i used the marker on only one set of "tests". In my experience, markering the edges of a disc actually decreases readability and increases the amount of error correction necessary to read the disc.
I know that Rodney Gold from AA has done similar testing using an all digital Meridian system that he tied into his computer to look at things "bit by bit". Our results basically confirm each others observations i.e. markering the edges created more problems than it solved. He also checked to see if "trimming" the outer edges of a disc made any differences. Using his computer to verify what his digital Meridian transport was reading, he found that a disc that is better balanced without any "burrs" on the outer edge was more easily read. My experience with the Audio Desk Systeme also verifies this.
Out of curiosity, has anybody done comparisons between AI and Optrix ? I would be curious as to the results and how the testing was carried out. Sean
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The "difference" that i mention is that i used the marker on only one set of "tests". In my experience, markering the edges of a disc actually decreases readability and increases the amount of error correction necessary to read the disc.
I know that Rodney Gold from AA has done similar testing using an all digital Meridian system that he tied into his computer to look at things "bit by bit". Our results basically confirm each others observations i.e. markering the edges created more problems than it solved. He also checked to see if "trimming" the outer edges of a disc made any differences. Using his computer to verify what his digital Meridian transport was reading, he found that a disc that is better balanced without any "burrs" on the outer edge was more easily read. My experience with the Audio Desk Systeme also verifies this.
Out of curiosity, has anybody done comparisons between AI and Optrix ? I would be curious as to the results and how the testing was carried out. Sean
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