Thank's for takng the time to explain that Wayne. Some of that I thought of, some I didn't. The H290s is actually very close to the same size as the 2373 horn within .5" in all measurements. The Selenium HC23-25 is quite different. So if the H290 performs well I should be OK just swapping it out...Right? The depth is about the same so I shouldn't have any delay problems and when I build new boxes I just need to maintain the CD to woofer distance.
Does it sound like I'll be OK?
Also last night I put the JBL CDs back in and it has a much stronger sound to it than the Seleniums do. It sounds a lot better with vocals near the Xover point as it seems to blend with the JBL 15s much better. I EQed the treble up also which did help the top end.