Ok I have come up with a 80Hz Horn Design Candidate, I would like to get some feedback and ask some questions.

A question arose when looking at the Lab v3 Vs Lab "v2".

What are the implications of having a Hyperbolic Sine Horn (expansion rate greater than 1). That apears to be how the Lab v3 was built.

I am asuming that the LAB subs where designed with a Size Factor of 4?

How flexible are the mouth dimensions for a size factor 2 Horn?

Would optimal be either a circle of appropriate radius/ square that is the sqr(area). I'm wondering this since the Labs only have an expansion on one axis.

Could a rectangular mouth that expands on one axis (and meets all of the area requirments be as usefull in a size factor of 2 horn?

When I exported the data from the horn flare, it gave me grayed out symetrical dimensions. If I just keep the height constant what can I expect good performance If I just accept the single axis expansion (say if I stack them 2 High?)

Any how here is one of the horns I am modeling.

Its a segmented aproximation of a Hyperbolic expansion rate of .55.

Using exponential or conical sections in the model don't seem to make much difference.

Antone-