What's the relation between sensitivity and "proper"? Nothing , only
that
I rememeber a bass driver with a light uncontrolled cone will be peaky in
the freq response, distort easier under higher power inputs and as a
natural
coincidence have an above 90dB/W sensitivty.

Why are you assuming that high sensitivities require a "light uncontrolled
cone"?

I don't know, but now how about you responding to the original posters
query? Perhaps he can then decide for himself which path he wishes to
follow
after all neither of us have anything to gain or lose.

I already responded.