[78-L] fake stereo

[Royal Pemberton]

I once heard a Sinatra greatest hits LP on Capitol that said Duophonic and
just used EQ and not the infamous delay, so they folded nicely to mono.
Mercury in the US often made fake stereo by having the original mono in one
channel with the bass slightly reduced, and a bassy, reverbed effect in the
other channel; these can sound decent by using the dry channel with some EQ.



On Sat, Dec 10, 2011 at 7:37 PM, Michael Biel <mbiel at mbiel.com> wrote:

> From: Randy Watts <rew1014 at yahoo.com>
> > Some rechanneled stereo folds down to mono reasonably well and some
> doesn't.
> > If all they did was emphasize the treble in one channel and the bass in
> other,
> > you can often get listenable results, albeit usually with extra reverb.
> > Other processes--not so much. Capitol's "Duophonic" process is pretty
> much hopeless.
> > At least I've never been able to get the things to sound like mono.
> > Same with RCA Victor's process.    Randy
>
> During that era some companies were also adding reverb to their mono
> issues as well, so those are likewise hopeless.  I remember a couple of
> Duophonic records which combined to mono very well but can't remember
> which ones now.  The processes most labels used would differ from album
> to album and sometimes from track to track.  RCA usually filtered the
> highs to the left and put a triple echo and the bass to the right.  The
> left channel can sometimes be used alone with some added bass.  I have
> some Perry Como and Belafonte albums that are the Perry Como Quartet and
> Belefonte Quartet. The re-echoing of the already echoed Elvis recordings
> was truly amazing.  It was the Elvis Quartet and the Stamps Octet.
>
> The biggest irony is back in the early days of CDs, RCA issued a group
> of Elvis albums with an electronic stereo logo included on the covers,
> and the critics EXPLODED!  So RCA apologized and redid the CDs from the
> original mono studio tapes, and sold off the first issues as cut-outs.
> They were the very first drilled cheap CDs I ever saw so I bought them
> as historic relics.  They were pure perfect MONO, recorded from some
> good condition early work tapes made at the time the masters were new
> and in good condition.  Then I heard the mono replacements and found
> that they had been played incorrectly from badly warped acetate original
> studio tapes with the highs swishing in and out.
>
> Mike Biel  mbiel at mbiel.com
>
>
>
>
> From: Christopher Steward <chris.1picc at yahoo.co.uk>
>
> > This is not quite on topic, but I'm sure there are plenty of people who
> can give some information/advice.
> >   I'm interested in restoring an 'electronic stereo' disc to decent mono
> sound; clearly I need to reverse whatever original processing was applied,
> if possible, but I don't know what that would have been. Were there
> different approaches? Can anyone advise how I can go about investigating
> this?
> Thanks,  Chris
> _______
>
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