Since subwoofers are longwaves...it will always have a problems with walls, it doesnt matter what speakerbox configuration you use (horn loaded or Bass Reflex)...Efficiency is what that counts...Reflex cabs are less efficient than horn loaded cabs (you needed more power amp juice to kick those BR cabs)...horn loaded cabs have bigger footprint than reflex cabs (horn loaded are sometimes hard to truck-pack)...there is always a trade-off...and that is why some big hired companies have various types of speakerbox configuration in their inventory.
just me...
Magandang araw,
jojo