Active EQ and/or boxed woofer design is too much of a compromise as it defies the purpose of the open back speaker design.
England is not an ideal country for open back speakers design as the OB needs to be massive in size (in order to sound appropriately) and requires larger rooms yet the space comes at premium in most living rooms.
These are some of the reasons as why people build small speakers and end up not liking them.
S