Bache, this question is no different than you post on single or multiple driver speakers. See my response in full. Conclusion, it depends upon the execution of the design intent and our personal sound quality preferences. There is no right or wrong.
Crossover or crossoverless
The founder and builder of the highly respected high-end speaker company Gauder Akustik, Dr. Gauder, says that using a full-range driver is very bad. He uses 3- to 4-way speakers with extremely complex 10th-order crossovers consisting of 58–60 components.
In contrast, some other well-known and equally respected speaker companies — such as Voxativ, Zu, Cube Audio, and Totem — use crossoverless designs.
Who is right, and who is wrong?