I agree. You should try treating first reflection points or perhaps addressing what is in between the speakers before messing with the crossover.
That being said, there is usually a resistor on the + leg of the tweeter. To tone it down more you could add another .5 Mills resistor in series with the existing one. If that isn't enough add another until you are happy with the balance.
That being said, there is usually a resistor on the + leg of the tweeter. To tone it down more you could add another .5 Mills resistor in series with the existing one. If that isn't enough add another until you are happy with the balance.