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  1. #1

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    Default FINALLY! A fix for dynamic angular momentum in CD format.

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  2. #2

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    You should see the two CD treatments in Affordable audio this month.

  3. #3

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    Whew, now I can sleep at night! All I have to do is explain it to my wife, you see honey CDs look round but the're not really round and they sound better if the're rounder...
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    I would think you would need a CD planer as well to insure that they have uniform thickness.

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    This is big.

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    Can I use it on records?

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    Kinda reminds me of that goofy record flattener you guys are sharing!! :D:D Didn't that thing cost over a grand????
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  8. #8

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    Quote Originally Posted by pearsall001 View Post
    Kinda reminds me of that goofy record flattener you guys are sharing!! :D:D Didn't that thing cost over a grand????
    Kinda reminds me of a Three Stooges moment where Moe sticks Curley's head in a grinder.

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    I think I've heard of this before but it was described more as shaving off the plastic rim of the CD with no information which diffracts light from the laser and thu creates jitter.

    The only crazy tweak that I will say has some real word improvement along these lines is burning your CDs to Memorex Black RWs or something equivalent.

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    Quote Originally Posted by SolidSqual View Post
    I think I've heard of this before but it was described more as shaving off the plastic rim of the CD with no information which diffracts light from the laser and thu creates jitter.

    The only crazy tweak that I will say has some real word improvement along these lines is burning your CDs to Memorex Black RWs or something equivalent.
    The black Memorex CD's are really nice. They don't seem to make a difference on every recording, but when they do, it's pretty noticeable. I burn mine from iTunes and ALE format. I bet those guys that use FLAC or EAC get that last little sliver out of those black CDR's.

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    Quote Originally Posted by SolidSqual View Post
    I think I've heard of this before but it was described more as shaving off the plastic rim of the CD with no information which diffracts light from the laser and thu creates jitter.

    The only crazy tweak that I will say has some real word improvement along these lines is burning your CDs to Memorex Black RWs or something equivalent.
    Okay, I'll bite. Why's that? Because they're black?

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    Quote Originally Posted by John30_30 View Post
    Okay, I'll bite. Why's that? Because they're black?
    I think the basic premise is that CD's are stamped, much like albums and over time those edges on the stamps lose their sharpness so the distinction between the + and - on the disc is less.

    By burning the CD to a CDR or RW the burner makes those edges more distinct. (assuming you are burning from a lossless source)

    On top of that, there are several different dyes that react with the burning laser. the black Memorex CD's use that dye, among others.

    I think Darque Knight did a huge thread about this topic. I was skeptical until I tried it and I'm certainly not a Kool-Aid drinker.

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  13. #13

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    Quote Originally Posted by John30_30 View Post
    Okay, I'll bite. Why's that? Because they're black?
    I'm trying to find the article that suggested this tweak right now in my stack of TAS. From what I remember (minus the technical jargon), regular CDs are pressed. CD-Rs are carved with a laser. CD-R results in less light diffraction which lowers jitter. I realize all this sounds like magic but it really does have a listenable effect if you have the system to exploit it.

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    Found IT! . . . well the DarqueKnight thread, not the TAS article.

    http://www.polkaudio.com/forums/show...highlight=burn

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    Quote Originally Posted by SolidSqual View Post
    Found IT! . . . well the DarqueKnight thread, not the TAS article.

    http://www.polkaudio.com/forums/show...highlight=burn
    That's the one.

    Wes
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    Quote Originally Posted by I-SIG View Post
    I think the basic premise is that CD's are stamped, much like albums and over time those edges on the stamps lose their sharpness so the distinction between the + and - on the disc is less.

    By burning the CD to a CDR or RW the burner makes those edges more distinct. (assuming you are burning from a lossless source)

    On top of that, there are several different dyes that react with the burning laser. the black Memorex CD's use that dye, among others.

    I think Darque Knight did a huge thread about this topic. I was skeptical until I tried it and I'm certainly not a Kool-Aid drinker.

    Wes
    Okay, I like the premise. There's been huge squabbles over true lossless replication from pressed to laser-etched- obviously.
    So, keeping in mind that the original source you're copying from is, what? The pressed CD? You're gonna get a better copy than the original?

    Although I used to have a Sony walkman that I dropped on a slab average once a day for years. After a few years, it would play a certain gray generic Walmart CDR copy of originals that it would refuse to read. So, it makes sense. And of course, Walmart quit stocking those.

    veddy interethtink. I need to read that thread.

  17. #17

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    Quote Originally Posted by SolidSqual View Post
    Found IT! . . . well the DarqueKnight thread, not the TAS article.

    http://www.polkaudio.com/forums/show...highlight=burn
    Thanks!

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    Quote Originally Posted by I-SIG View Post
    The black Memorex CD's are really nice. They don't seem to make a difference on every recording, but when they do, it's pretty noticeable. I burn mine from iTunes and ALE format. I bet those guys that use FLAC or EAC get that last little sliver out of those black CDR's.

    Wes
    do you use a green sharpie on the outside of the disc to improve sonics as well?
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  19. #19

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    Quote Originally Posted by BjornB17 View Post
    do you use a green sharpie on the outside of the disc to improve sonics as well?
    Of course I do!!! (Yes, the sarcasm is being laid on thick and heavy.)

    Wes
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  20. #20

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    Quote Originally Posted by John30_30 View Post
    Okay, I'll bite. Why's that? Because they're black?
    Once you go black, you never go back... :D
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