Considering the lower fs ALONE, you're better off: the lower fs tweet will be well within its linear range if the x-over frequency was chosen for a higher fs tweet. Generally speaking, the further away from fs you cross a tweet, the better it is (lots to be gained in avoiding distortion).
Free air resonance?
What is free air resonance and does it make a big difference if one tweeter's free air resonance is high or low? Would 1500 be better than 600 or vice versa? I am thinking of changing my Vifa's which came with my Hales T5's which have a free air resonance of 1500 or so to the Seas Millenium which has a free air resonance of 600.
Any explanation or advice would be greatly appreciated.
Any explanation or advice would be greatly appreciated.