I have had a kind of this experience. I used Faital HF200 in LTH102 but I didn't like the sound. It was too aggressive like PA and lacked some clarity in high tones. I even had to add tweeter to get some balance.
I didn't know what to blame, driver or horn.
Recently I have bought large German Jabo 72 and the situation is completely different now. Faital sounds like a new driver, balanced FC, no need to use tweeter anymore. So it seems, that LTH102 is strong PA horn, and for home usage it is better to find an other horn.
BTW, I also used smaller Jabo 53. Sound was better than LTH, but still lacked something. And KH-72 is perferct combination with Faital.