I have seen displacements for most larger low frequency drivers, but I am curious to know if anyone has ever compiled a listing or spreadsheet of the displacements of high frequency horns and their related drivers as they would relate to internal enclosure volume.

I have done a search here but found nothing.

If not, anyone have any better ideas than using a "known" displacement container and pouring sand around a plastic wrapped horn and driver combo, removing it and then CAREFULLY measuring as you re-fill the container?