[78-L] Record playing speed ^

[Royal Pemberton]

And Edison had a few experimental disc records cut at 30 rpm.

On 12/3/08, AllenAmet at aol.com <AllenAmet at aol.com> wrote:
>
> In a message dated 12/3/2008 12:14:49 P.M. Eastern Standard Time,
> mbiel at mbiel.com writes:
>
>> Dictating (cyl) machines were 150 (per inch). <
>
>
>
>
> yes, for Edison; but Columbia used 160 'grooves per (tpi)'.
>
> allen
>
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