Well then since you're not looking at buy/add to your current speakers check out Dali Epicon Series approach use Two!
Twin tweeters are something of a Dali speciality and comprise a fairly conventional dome working together with a ribbon unitbest of both worlds approach The ribbon tweeter simply takes over where the conventional dome starts to tail off, which in this case is around 15kHz. The idea is to maintain treble dispersion at the highest frequency and, obviously, take advantage of the quality of the ribbon unit.
Result - very unique detail sound