I've ordered a pair of crossovers and can't wait until I get them to begin the try-outs. I guess the R1/R2 values should be altered to better match the 2227's higher sensitivity?
When it comes to horns: Is throat design, dispersion, length and width what You should look carefully at when searching for suitable alternatives to H290? It´s an estethics thing...
Very interesting information in the papers You provide. Thank You.