[avaserfi]

Which would be somewhere around Xmax? Depending, of course, on how accurate the manufacturer's specs are... Hmmm.

Most drivers are not linear to rated xmax, sadly. The only way to tell if a driver actually is linear within a specific range is via actual testing.

 

[avaserfi]

Hence all the questions.

Data lacking, all I can do is make assumptions.

Indeed, it is very hard to know without proper data.