Wayne Parham Messages: 18789 Registered: January 2001
Illuminati (33rd Degree)
Seems like the Econowave folks did that combination for a while. If memory serves, it was very nice. It would naturally have a narrower forward lobe in the vertical dimension, as you've rightly inferred from the horn height and requisite driver spacing.
My suggestion is to build it! Do an A/B comparison, both listening and measuring!