Originally Posted by
KCCT82
Yes, efficiency is a good thing.
Yes, I'm pretty sure most if not all the members contributing to this thread have heard low frequency horns.
BUT, is it really necessary in your case? Is it worth the trouble? Of perhaps even feasible? So far, the general opinion is no.
Also, if you really want "proper" bass horns, then forget about the 4520, I don't see how a tiny 3-4ft scoop is gonna give you proper horn loading down to 40hz.
"Proper bass horns" - Harder to design, harder to build, unpredictable results.
Reflex/Sealed - Easier to design, easier to build, almost guaranteed to be successful, especially if you build sealed boxes.