Hello. I have a pair of nice 755Es. I have had a pleasure listening them in open baffle for a while and I realised I really miss the top half of the octave. I do not know how high my ears will take me, but I can still hear the high pitch of CRT tubes just fine (and it's annoying too).
755's are nice and all, but I need a tweeter, or all my jazz will sound oily...

What to use?
Horn (closer pattern match)?
Textile dome (velvety sound)?

How high to cross? Do I leave the 755 rollof naturally?

How about the bottom, do I attenuate the lowest freqs in "open baffle"? Can I damage the drivers if I don't? Should I put them in a box? Sealed? Vented? ported? TM? TQWT?

I just have to make justice to these babies!

Thanx for any suggestions...