Wayne Parham Messages: 18748 Registered: January 2001
Illuminati (33rd Degree)
As I said, the four π speaker is a hifi speaker and isn't meant to be arrayed. The only way they can be clustered is in pairs, with one on top of the other, tweeters together.
For a flown array, you would need to look elsewhere.
I suggested that an arrayable speaker can be made that is very similar to the four π speaker, but that would still take a design/test/optimize cycle. It isn't something I would encourage unless you were familiar with loudspeaker design, measurement and testing.