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From: sjc@angband.UUCP (Steve Correll)
Newsgroups: net.audio
Subject: One DAC, two channels, one delay
Message-ID: <13@angband.UUCP>
Date: Thu, 6-Sep-84 21:21:00 EDT
Article-I.D.: angband.13
Posted: Thu Sep  6 21:21:00 1984
Date-Received: Fri, 14-Sep-84 05:44:52 EDT
Organization: S-1 Project, LLNL
Lines: 18

>   If I were designing a single DAC CD player, I would probably put
>   in a couple of Sample and Hold circuits to eliminate the phase
>   shift. Do any of the players on the market do this?

The schematic for my Technics SL-P7 shows one DAC whose output is
switched between channels with analog switches. An op amp generates a
delay on one of the channels.

I wish they hadn't bothered. As other folks have already pointed out,
the delay can be eliminated by sitting a bit closer to the appropriate
speaker. (My calculation is about 1/3 inch, provided I haven't forgotten
the speed of sound). Assuming the delay proves objectionable, moving
your ears or the speaker seems a cleaner solution than inserting a
funny capacitor-plus-op-amp circuit.--Steve

-- 
                                                           --Steve Correll
sjc@s1-c.ARPA, ...!decvax!decwrl!mordor!sjc, or ...!ucbvax!dual!mordor!sjc