Constructed at Giskard's suggestion with these parts:
Using breadboarding methodology dormant with the Zilchster for 35 years, simple crossovers yield surprising results with 2427H's on 2344A Biradial horns. 7-Ohm resistors are in series with L2 to comprise the requisite 7.5 Ohms. Boards are 5" X 6".
The sound? Clean, balanced, "sibilent." These are keepers :