So you basically want TAD Compact Evolution One.For me? It would be a 3 way speaker with a 4-5 inch midrange and a 1 inch tweeter (concentric/coaxial design) with a 6-8 inch high excursion woofer, in a bookshelf style, with the mid/tweeter separated into two separate chambers.. with a quality crossover, and hermetic seals all over the place.
Purifi now makes 8" inch woofer, super low distortion.Even for bass frequencies, their distortion is lower than virtually all other 6.5" drivers.
That sounds like Perlisten.On axis response within +/-3dB
Controlled but wide horizontal directivity (60deg)
Controlled but narrow vertical directivity (20-30deg)
Sensitivity of at least 90 db/W