Hover mouse over funny parameters to find out what they are.Double click things like CMS and BL. Enter the driver parameters in order,from left to right then the bottom row left to right.

Read this. If your stil stuck give me a PM

Vrc = 0
Vtc = 60,000cc +
S1  = Perhaps half Sd - look at plans.
S2 = Easy. Approximate the expansion as an expo at first to get it about right,then input the various sections.

Youl notice that a 3 or 4 section conical horn approximating an expo makes no real difference at bass frequencies-comes in handy!

Mike.e

Introduction
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In more detail ...
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http://www.diyaudio.com/wiki/index.php?page=Loudspeaker