[78-L] groove size again

[Royal Pemberton]

I have only one inside-start 90 rpm Pathé disc (a 14") and its grooves are
definitely wider than those on the later outside-start 80 rpm discs I have.
So I wonder if all the inside-start discs have the wider grooves (and all
the same width regardless of disc diameter) like all the outside-start discs
all have the same smaller size of groove?

On Fri, Jun 4, 2010 at 2:14 AM, Steven C. Barr <stevenc at interlinks.net>wrote:

> --------------------------------------------------
> From: "Michael Biel" <mbiel at mbiel.com>
> > Easily it would be the VERY wide groove Pathe used for those GIANT
> > 20-inch discs.  I've only seen one player in operation and I do not
> > remember the width relative to the normal Pathe sapphire.
> >
> But...did Pathe use wider grooves on these 20" discs...or simply increase
> the groove spacing, which would have allowed more deeply cut grooves...
> and as a result increased playing volume (and as well were these wider
> than the standard grooves on their 10"(+/-) vertical-cut discs? Remember
> that Pathe had already sold millions (or so) of players with their standard
> ball-tipped styli...so it seems unlikely they would be promoting and
> selling
> records which used different styli...?!
>
> Steven C. Barr
>
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