Thread: Dual 505
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Old March 10th 15, 12:35 AM posted to uk.rec.audio
Phil Allison[_3_]
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Posts: 312
Default Dual 505 update

Dave Plowman (Rabid Nutcase) wrote:


The reasons for the original CD spec are all based around the limits of
the PCM recorders of the day - basically a semi-pro video recorder
(U-matic).


** The CD spec was *tweaked* to be compatible with those recorders -
hence sampling at 44.1kHz instead of some other very similar number. It
is NOT a quality limitation.


Never said it was.


** Yes you did.



As we know from later, CD itself is capable of a longer playing time.


** The original CD was smaller than the final 12cm dia version, chosen
to increase the playing time to well over 1 hour.


The limit of an NTSC U matic tape was also 74 minutes of programme
material. Allowing for line-up. PAL was 90 minutes.


** Yawnnnnn....


44.1kHz and 16 bit gives audibly perfect reproduction plus a comfortable
margin beyond. 100dB s/n and 0.005% THD are well beyond what is
necessary.


Absolutely. I've never said different.



** But you snidely implied differently.



..... Phil