The proper use of acoustic treatments can only add to the reproduction capabilities of a set of loudspeakers. Their use can result in smoother bass, tighter imaging and a better defined soundstage. It's not a defect in a speaker design that acoustic treatments can have these effects. It's been my experience that careful setup, not absolute equipment quality, is the greatest determinate of a system's overall sound quality.
Any number of manufacturers make or have made speakers that were designed to have specific interactions with the room. The Vandersteen 5s and some newer Infinity models have built in bass equalization. The NHT 3.3s have a unique shape and require positioning very close to the rear wall in order for the woofers to "see" a room corner. The new B&O flagship speakers have built in full spectrum digital room correction. The Klipschorns required corner placement for proper bass response. The list goes on.
Slappy makes a good point. It probably is more cost effective to buy $15k speakers and spend another $10k on room treatments than it is to just buy a $25k speaker and place them in an untreated room.
Any number of manufacturers make or have made speakers that were designed to have specific interactions with the room. The Vandersteen 5s and some newer Infinity models have built in bass equalization. The NHT 3.3s have a unique shape and require positioning very close to the rear wall in order for the woofers to "see" a room corner. The new B&O flagship speakers have built in full spectrum digital room correction. The Klipschorns required corner placement for proper bass response. The list goes on.
Slappy makes a good point. It probably is more cost effective to buy $15k speakers and spend another $10k on room treatments than it is to just buy a $25k speaker and place them in an untreated room.