@zarbo-audio-projects – At that point, you could do the two drivers in MTM, or WTW rather, which if crossed with third or fourth order crossover, then you really could have some nice clean sound.
Another work around is to build an active speaker with DSP. Then the DSP can mitigate the signal strength, thereby not adding extra voltage to overcome the resistor that arrests the sensitivity of the tweeter. But at that point, you need an amp per driver of the speaker, and talk about increasing money. LOL.