I have made up center channel speakers of vintage JBL parts of several confugurations of drivers. Current test units have two 112As and an LE-85 with a 36db/octave crossover at 800Hz. The LE-85 has the shorter of the two 1 inch horns. They work nicely but I am building three more sets and am pondering different crossovers. Perhaps 1200Hz with 12,18 or perhaps 24db/octave? Another set will have LE-111s instead of the 112As. Any thoughts, gentlemen?