Wayne Parham Messages: 18784 Registered: January 2001
Illuminati (33rd Degree)
Check out the program called volume.exe in the PiAlign distribution file. I don't recall the volume of the tweeter and horn, but you can easily get a good estimate by calculating it as a composite of primitive shapes. For example, a compression driver or speaker magnet can be calculated as a cylinder, a speaker cone as a cone and a horn as a wedge or pyramid.