[78-L] Record playing speed

[Michael Biel]

Thanks to both Allen and David for providing the correct speed and 
threading.  I knew these both but was too lazy to get out the books and 
look them up to be sure.  And the Thorens motor I mentioned on the other 
post is a spring motor, so the article David mentioned is appropriate 
for the machine I have.  It has a magnetic pick-up but no amplifier.  
You plug in a headphone which can be driven directly by the pick-up.  
The late George Blacker found this for me in a Conn. antique store.

Mike Biel   mbiel at mbiel.com

AllenAmet at aol.com wrote:
>  
> mbiel at mbiel.com writes:
>  
>   
>> Dictating (cyl) machines were 150 (per inch). <
>>     
>
>
>
>
> yes, for Edison; but Columbia used 160 'grooves per (tpi)'.
>  
> allen
>  
>
>   


David Lennick wrote:
> Michael Biel wrote:
>   
>> In the 1930s, while the American talking books ran at 33 1/3 
>> using the RCA Program Transcription grooving until microgroove came 
>> along in 1948, in England there was another speed in the 40s, I 
>> believe.  
>>     
>
> Yup..24 RPM. I have several discs at this speed. I found an article in a 30s 
> issue of Gramophone (which I no longer have) which pointed out that this was 
> the lowest speed that could be managed on what would likely have to be a 
> spring-wound machine, since electricity still wasn't available to many users.
>
> dl