What is in the Armoire? If it is a TV then disregard my suggestions. Try opening the doors and see if your sound changes at all. Or try draping a thick blanket over it and see if notice any difference at all. I have a similar issue with a TV. If I place acoustic panels in front of the TV it creates a big improvement. Problem is I can't move the TV, so I have looked into other options. But my point is maybe you can gain some improvement with some modifications.
Armoire between speakers
I have a large armoire sitting between my 2 speakers. This requires I place my speakers about 9 feet apart, about 1' from the sides and rear walls. The sound is still good and so is the soundstage. How much improvement in sound and staging can I expect if move th armoire out of the room? Will it be dramitic or subtle? Thanks for your opinions.