Whilst it's best not to overdrive speakers, there are ways to protect the tweeter to an extent.
Raise the crossover point. This can be detrimental to the sound, but with some speakers it can work. Rega speakers tend to feature bass/mid drivers with hard, light paper cones that can drive well into the upper mid with no problem and a highish crossover point may be OK.
Use a steeper treble filter in the crossover. This reduces the amount of damaging lower frequencies that can get through to the tweeter. But you then run into phase problems and the matching with the bass unit roll off can be affected. Treble efficiency will drop too.
Use a fuse in line. It works, but can affect the sound quality.
Use electronic protection. There are a few ways of doing this. Investigate. It's not something I've tried. Never had the need, even though I've probably built fifty pairs of speakers (and never blown a tweeter ).
It is impossible for anything digital to sound analogue, because it isn't analogue!