Well, if they're free I guess you can play with 'em, but they're probably not worth building anything new around. Without the
Thiele-Small parameters you can't properly design a box for 'em or figure out if they're any good.
My guess is they're not going to make very good home theater subs if you're after low end extension, but that might not be what you're after.
And, no sub I've ever seen needs to be "warmed up".
