Hi Kehut,
You can certainly drop another tweeter in, but I would assume that a quality manufacturer like Sonus Faber would put a tweeter pad for the perfect blend as well as impedance and resonance compensation in their crossover network for the tweeter being used. It is highly unlikely that any compensation network would work well with any other model of tweeter, even from the same manufacturer.
It won't damage anything to try... Good Luck, Tim
You can certainly drop another tweeter in, but I would assume that a quality manufacturer like Sonus Faber would put a tweeter pad for the perfect blend as well as impedance and resonance compensation in their crossover network for the tweeter being used. It is highly unlikely that any compensation network would work well with any other model of tweeter, even from the same manufacturer.
It won't damage anything to try... Good Luck, Tim