+ 1 for GR. The problem is he needs the speaker to design his crossover.
Any other way, (unless he had your actual XO fix on hand). Would be a shot in the dark at best... He'll want the box, might be able to get away with one. BUT the XO won't have a final tune, left to right, in case there is a slight driver variance. He might match. Not sure really. When drivers are not matched, the XOs can't be the same..
That is the real trick... Surely close enough for the majority of folks, though.
Regards
Any other way, (unless he had your actual XO fix on hand). Would be a shot in the dark at best... He'll want the box, might be able to get away with one. BUT the XO won't have a final tune, left to right, in case there is a slight driver variance. He might match. Not sure really. When drivers are not matched, the XOs can't be the same..
That is the real trick... Surely close enough for the majority of folks, though.
Regards