Room setup

I have a two car garage.  Last winter I blew in almost 3 feet of insulation.   The walls are lined with shelves with bags of smoke pellets and miscellaneous junk. 

I took the old stereo out to the garage.   I mounted the speakers six feet high in the back of the garage.   It's almost a completely square room.  

Here is the thing.  The stereo sounds amazing in my garage.   I can't get that sound  in the house.  I sit just outside the door drinking coffee and listening,  and it's amazing.   Damn, wish my living room sounded that good.  Has to be the room.