"So... Here's a question.
How many of you guys have really enjoyed a speaker that sounded amazing to you but on paper had poor measurements? Freq response, etc."
During a demo, I unfortunately have to answer - a lot. Exaggerated bass, especially, can sound great on some recordings or in some rooms, even though the measurements look bad on paper.
I'm guessing from the responses that 5A owners like to use the bass section controls as a tone control, and that's the source of the "soul".