Wayne Parham Messages: 18791 Registered: January 2001
Illuminati (33rd Degree)
The seven π's in the early eighties with 2205 woofers used a pair of 2105's for midrange, and they weren't horn loaded. I've also made a seven π using a 2245 bass bin and 2123 direct radiating midrange.
But I think there are advantages to using a horn loaded midrange too, one that matches directivity at 90° horizontal and with limited vertical pattern too. The corner limits the radiating angle, to be sure, but at higher frequencies it is nice to have the pattern control, reducing early reflections. It also allows the vertical pattern to be set within the nulls. That's another thing to consider, a possibility worth looking at. A midhorn like this is relatively easy to build.