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Advies voor CD loopwerk gezocht


Guest Ook Sjoerd
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Guest Ome Jan

Ja ja ja,

 

Het is maar net of je installatie je kunt laten horen wat het verschil is... Oftewel (zoals ik vroeger altijd riep) potjandriedubbeltjesing bullshit Jan.

 

Vanzelfspreend heeft iedere verbetering van een component zin (ook al is dit een loopwerk), indien dit de zwakste schakel in de keten is! Het geheel klinkt zo goed als de zwakste schakel mogelijk maakt.

 

Groetnis, Ome Henk

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Beste Jan, als je het verschil niet hoort tussen een copie op je computer en een originele..."goed opgenomen cd",

ik bedoel dus als jouw audio-set het verschil NIET kan laten horen,dan kan ik me inderdaad voorstellen dat je een goed loopwerk onzin vindt. Begrijpelijk dat je met een dergelijk midi of mini systeem of hoe het ook moge heten geen verschillen hoort.vriendelijke groeten en nog veel luisterplezier!Roger.

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Op de web site van Andrew staat interesnte informatie onder andere dit:

Adres: www.geocities.com/sunsetstrip/club/1484/audio.htm

 

CD COMPONENT TRANSPORT+DAC PLAYERS

I think overpriced CD transports are a scam because DVD-ROM players which have higher performance demands and must read DVD-ROMs and CD-ROMs exactly with no margin for error are inexpensive and don't use any of the audiophile gimmicks such as "vibration isolation", "descrete power supplies", "belt drives", "special cables", "fixed lasers", etc., The whole point of digitizing music, reducing it to 1s and 0s, was to eliminate such distortions. The entire computer industry would crash overnight if such problems were real. Component CD systems actually aren't very good at reading scratched, damaged, or old CDs and sometimes skip horribly. In the component systems, the transport just sends whatever it reads to the DAC brains in another box; if there is an error, the brains aren't able to tell the transport to retry the bad sectors as integrated players do. Phillips and Merdian are starting to use standard computer DVD-ROM players. Most of the external DAC converters use chips are OEM'd from Burmester, Burr-Brown, Crystal Semiconductor, Pacific Microsonics, UltraAnalog, or Motorolla, except for Sony and JVC. Many home theater decoders and receivers have inputs for CD DAC, but lack HDCD. If you want an external DAC, be sure it has all of the above listed specs, especially HDCD.

CD players and snake oil

Most CD player manufacturers attribute their CD players' hi-prices to their engineering designs made to eliminate jitter (that company made an "answer" page to this one), though I've read scientific journals that say "jitter" does not exist or is insignificant. "Jitter", if real, would be a major problem for computers where every bit is mission critical, but the term doesn't exist in computer journals. The term does not exist in professional recording studio and equipment journals. Werner Ogiers (see above for links to his site), explained that "jitter" does exist, but the way manufacturers claim to handle it is wrong. Audiophile journals used to hype the idea that analogue turntables had something called "shatter" and devised dozens of expensive paraphernalia to compensate for that; "shatter" never existed. Some CD players are designed with "backwards" thinking, without important features such as CD-text, programming, peak search, random play and lacking in necessary advancements such as error-checking oversampling to compensate for scratched CDs. I've tried to play a few old CDs on a few brand new very expensive boutique CD players with very expensive boutique D/A converters and they either skipped horribly or didn't read at all. Expensive audiophile CD players have had their price envelopes shot skyward by ambitious manufacturers. They've now created CD players with special weights, special drawers, special gizmos and cosmetics. Their marketing to justify their prices is convoluted. Then the DVD standard comes along requiring higher performance than CD players, and none of the new consumer DVD players have any of those elaborate "anti-jitter" tweaks. DVD, with it's higher standards and lower priced components, has overnight made the entire audiophile CD player industry look like a scam designed to generate system envy and trick music lovers into spending huge amounts on money for players, D/A converters, and digital cables. A few UK magazines have even reported that the new DVD players such as the Pioneer DVL-909 are much better than the be$t boutique CD players. I've yet to hear a component CD player with separate transport-turntable and D/A converter connected with premium digital interconnects sound better than the Accuphase DP-75V integrated models. The expensively pricing companies cannot change the simple fact that a what a CD transport does is just "read" the data, and the $30 CD player installed on your PC which has to "read" every bit mission critically-perfectly, does exactly the same thing. And those heavy cases, clamps, vacuums, special power supplies, special cables, artsy designs, special drawers, and useless cosmetics don't do anything - it's the D/A conversion that matters! I could be fooled too about Sony's product tiers and maybe all Sony CD players have the same D/A converter chips and all of their product differentiation is cosmetic. Don't be fooled about the superiority of "gold" CDs since the cheapest computer CDs (such as those given away by AOL) aren't "gold" and every bit is mission critical.

DVD-Audio and SACD have potential to be great audio formats, but the truth is all editing, mixing, and mastering in digital is done in the 20 bit, 44kHz realms, not the DVD-Audio and SACD realms. The most popular digital recorders, editors, mixers and mastering programs, namely Digidesign's Pro-Tools and Sonic Solutions, do not support DVD-Audio and SACD currently. The magazine writers who claim to hear a vast improvement with DVD-Audio and SACD are misleading the public.

 

groetjes,

Jan

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Guest annie

Beste jan als jij zulke artikelen leest en dan ook nog alles volledig aanneemt zonder zelf op onderzoek uit te gaan, vraag ik me toch af hoe bij tot je besluit bent gekomen om je huidige set aan te schaffen.

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Leuk verhaal Jan,

 

Alleen jammer dat het niet klopt!

 

De auteur vergelijkt appels met peren als hij het over computerspelers heeft, deze hoeven namelijk niet 'REAL TIME' af te spelen. Ze draaien op 40X normale snelheid en als ze een paar bitjes missen lezen ze die toch nog een keer! Dit In combinatie met de kloknauwonkeurigheid en wisselende transportsnelheden (en -tijden) binnen een processor, geeft dit een behoorlijke JITTER.

 

JA JITTER bestaat wel, en het is hoorbaar ook!!!

Plaats maar eens een nauwkeurige klok in je CD-speler en je weet niet wat je hoort (dit is overigens ook meetbaar)

Jitter tast o.a. de dynamiek, ruimtelijkheid en ritme van de muziek aan.

 

Moraal: geloof niet alles wat je op 't net vind, er zijn een hoop gefrustreerde blaaskaken die maar wat schrijven (misschien vind je dit ook van mij, maar dat is dan helaas jou vergissing)

 

Groeten,

 

Stefan

 

 

PS Sorry, maar een gebrande CD komt bij mij niet op de CD-speler!

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