sunnuntai 23. heinäkuuta 2017 17.36.49 UTC+3 Brian Gaff kirjoitti:
It does seem though that in the 70s we had mixes for some recordings with a
definite middle to top emphasis. I suspect this might well have been added
by the cutting engineer to overcome some of the problems of analogue systems
perceived at the time.


Go on, please.

Apart from the problem with bass excursion, cured easily by Bass Phase (everything below 100Hz sent equally to both channels - hence mono and greatly reduced vertical excursion when cutting) the main problems were
with sibilence, and getting instruments such as cymbals, glockenspiel,orchestral bells, chimes, etc to reproduce cleanly. Exactly the reverse of what you state above.

This was why CDs made from the vinyl masters sounded
so toppy and bass light.

What do you mean by a vinyl master? Nothing except vinyl pressings can be made from the stamper.

The studio mix master (analogue or digital) was/is the source for vinyl, cassettes, eight track cartridges and CD production.

Iain