Well, very few very good sounding drivers are ideal, or integrate well with the other drivers. Speaker designers compensate for this within the crossover.
Which is why so many audiophiles are never happy with their speakers. The EQ that is built in, has been tuned to the designers ears rather than your ears.
If you want a pair of trousers that fits you, who should try it on to see if it fits? The person in the store, or you?
Erik, do you see now why built in EQ doesnt work?