[78-L] Four Lads Stage Show

[Royal Pemberton]

Victor were cutting record masters with coarser pitch when they knew a
record would be shorter in duration as far back as in the 'teens.

On 7/6/09, Michael Biel <mbiel at mbiel.com> wrote:
> From: DAVID BURNHAM <burnhamd at rogers.com>
>> I also wonder why, quite often, popular 10 inch LPs with three or
>> four tracks per side utilized so little of the record's surface.
>> It seems that more often than not there is as much surface used
>> for run-off spiral as there is for music.  The record could easily
>> accomodate 2 or 3 more tracks per side.
>
> Sound quality.  The original rules for the Lp system was an 8 or 7-inch
> inner groove minimum diameter.  Many of the Columbia Lp masters cut in
> 1948 have large inner grooving diameters.  In addition to higher surface
> speed, keeping inner diameter dimensions close to the outer diameter
> dimensions keeps the contrast of sound quality at a minimum.  This was
> one of the original benefits of the small diameter 45 which had
> inner-groove speed very close to that of the outer-grooving speed, so
> the sound would not vary that much as you go from the end of a side to
> the start of the next.  But when people noticed the same thing that you
> did and started complaining of all the wasted space, they started going
> closer to the label.
>
> Mike Biel  mbiel at mbiel.com
>
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