Speakers for a “cold” room

I have a terrible room 16 x 18 two bay windows (I do use heavy drapes in front of them). Partially hard wood floors, and plaster walls.  8 foot ceiling.   I have acoustic zen adagio and want to upgrade.  I am also going to upgrade the electronics.  Jolida tube pre into emerald class d amps.   I love the zen’s but find the upper mid’s a bit harsh.  Bass is nice an punchy.    So......  what would be a upgrade for a cold room.  I was thinking golden ear triton 1’s due to build in sub.    Thanks much in advance