Regarding the choice of tweeter/mid I can't see that I have a choice for this design. Going with an array of smaller units (like the Neo8) will not allow a cross at 350 without serious compromises i SQ. A long and robust ribbon could do the trick, but short of DIYing one (which I don't dear attempt) they seem to be in short supply... Do you have any suggestions?If you dont want sub/mid and tweeter. try something like the 1 aurasound cougar which is pretty flat from 300hz-20khz. It also will not have comb filtering until much higher in the frequency so it could be a good alternative.