[78-L] acoustic recording

[David Lennick]

DAVID BURNHAM wrote:
> Indeed, the dates vary. Columbia actually discontinued 78s in the US in 1957, 
> as did a few other labels (a very late RCA Elvis from '59 was mentioned here a 
> few weeks ago) but Canadian labels kept 78s into 1959 and '60 in some cases. 
> And the speed stayed in use for production libraries till 1968 because of 
> superior fidelity and ease of cuing in studios.
> 
> dl
> 
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 
> Well that was a little mis-guided since, as pointed out here a few weeks ago, the Lp, with its micro-groove, was capable of higher quality sound than the 78 with its 3 mil groove.  A record with a 3 mil groove would have to rotate at 100 rpm to match the sound of a record with a 1 mil groove rotating at 33.3 rpm.
> 
> db
> _______________

You're ignoring the fact that production library discs were not sold to the 
public but were specifically for radio, TV and film work where a microgroove LP 
with 36 short music cues would be destroyed in the first few uses, where 
individual tracks would have to be marked with a grease pencil so the op would 
play the right track (live on air many times), and where the extra fidelity 
wouldn't matter because of the limited frequency on air. And those late 
Chappells and Boosey & Hawkes vinyl 78s outplay anything on LP from the same 
period.

dl