While horns are high efficiency, they also are generally high distortion. Actually the speakers used in many theaters are JBL Pro products. A horn is also not a great Hi-Fi stereo speaker for this same reason. The tweeter they have chosen, "modified", is one of the lowest distortion tweeters made today. So there decision on drivers is IMHO excellent. Good driver do not add up to good design though. It's all in the crossover!

Tim