Is there any documentation about how the Edison Lab placed the piano in 
regard to the recording horn? Any photographs?

joe salerno

John Eberle wrote:
> Regarding stylii for playback of Edison Discs :
> 
> The Edison factory  dimension spec for the stylus to play the 80 rpm
> Hill and Dale Diamond Discs  is .0047"   . So ; any smaller stylus , such 
> as 
> .003 " ,  made to play 78s will ride the bottom of the groove and not the
> sidewalls  resulting in less than optimum tracking of the modulation and 
> degraded audio  playback .  
> There are likely to be custom stylii manufacturers who could supply the  
> proper size stylus for your 
> favorite cartridge .  I prefer to use a meticulously maintained Edison  
> C-250 Laboratory Model Phonograph to play and to re-record my Edison Discs  
> .
> 
> It is of interest that the Diamond Disc repertoire contains many gems  
> by artists such as : Serge Rachmaninoff piano performances , Fletcher  
> Henderson's Orchestra , 
> Vernon Dalhart of Prisoner's Song Fame , early country recordings by Ernest 
>  V. Stoneman , 
> Fiddling Powers Family , Gene Austin & George Reneau and Cal Stewart (  
> Uncle Josh ).
> Not to mention the US Marine Band , Billy Murray , Ada Jones  ,and recorded 
> speeches by 
> Teddy Roosevelt and so much more .
> 
> And the audio quality of these  recordings outstanding for their time , 
> check out the
> famous Edison Tone Tests where artists performed in public in direct  
> comparison with their
> Edison Discs !
>  
> There is a treasure trove of music and audio history available on Edison  
> Diamond Discs and nowhere else .
> 
> Just my 2 cents -  -  -   again .
> 
> John Eberle
> AMERICANA CD MASTERING 
> 313 EAST COLLEGE STREET  SUITE 3A
> DICKSON , TENNESSEE 37055
> 615-441-4660
>  
>