William Sommerwerck wrote:

in practice, audible distortion is a warning that you should
turn down the volume.

Couldn't agree more.


The distortion I was talking about was the sort that comes from pushing it
into its excursion limits.

(X max)

Precisely. I have a lovely pair of Altec diaphragms in my "rogue's gallery" that
demonstrates this perfectly. The voice coils meaure 100% OK and look OK.

Graham