The Aerials already HAVE a passive x-over -- you don't need to add an extra, electronic one. Unless you're ready to disconnect the passive LOW pass and the BANDPASS and keep only the tweet's xover; in which case a simple line-level passive or active x-over will do the trick.
The sound will be invariably better when you connect the amps directly to the spkrs with the xover being before the amps (it's easier to xover a small signal). I'm sure Aerial will help you in with info on their xover.
Sound level: it's a matter of amp sensitivity level and in some amps it can be controlled inside. It shouldn't be difficult to find out: check out each amp's sensitivity, the manufacturers could easily tell you!
Good luck
The sound will be invariably better when you connect the amps directly to the spkrs with the xover being before the amps (it's easier to xover a small signal). I'm sure Aerial will help you in with info on their xover.
Sound level: it's a matter of amp sensitivity level and in some amps it can be controlled inside. It shouldn't be difficult to find out: check out each amp's sensitivity, the manufacturers could easily tell you!
Good luck