Hi folks:

What de-emphasis curve is a good choice for acetate discs? I have six 78
rpm sides by a gospel quartet here, recorded in 1946 at a local studio.
The discs are Presto, but of course that's no guarantee that the disc
cutter was also a Presto.

Anyway, I'm wondering what a good curve would be as a starting point? NAB?

Peace,
Paul