Quote Originally Posted by bowtie427ss View Post
A pressure or vacuum "leak down" test is certainly a measurement.

Just maybe not one we'd normally associate with speaker cabinets, and probably marginally useful at best. I'd advise anybody considering such a test to limit their testing to a scale of less than 30 inches in a water column, not Hg(mercury) and NOT PSI.
But then again I have never been that rectal about it..