What is difference between Aerial Model 5 & 5B ?

I think they went to a ported design on the 5B? The 5's are sealed (unique in the aerial line). I have some 5's they are stunning, in some ways the best of the line. For surrounds, Id think the SR3 would be a better choice though. Any of their line matches the others very well.

have fun,
-Ed

I took a pair of Aerial 5 home for a week and then ordered a pair for purchase. The ones that came were 5b. The grille construction is different (pin-mounted vs magnet), the tweeter looks different, the midrange could also be. They are not ported. After a month of break in they sound wonderful.