Yeah, THOSE resonance frequencies you want above the driver's operating range, but each speaker has a natural free-air resonance which is at least a factor when designing a cabinet. The speaker's resonance frequency is affected by the enclosure (sealed enclosures raise it, ported enclosures can sort of drag it around a bit) but it is a factor. Midrange drivers usually have a higher natural resonance than woofers, although I am sure there are exceptions to this (eg. I think KEF used the same B110 driver as woofer and midrange in different speakers).


M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8