I've been looking at some pro sites that use conical horns and found the Yorkville tx8's use a conical 8 inch midrange and most, if not all the mid driver can be seen in the throat area. The Electrovoice Variplex II pretty much the same. They use 8 inch mids however, the Yorkville using Audax mids which interests me because I have 4 Audax 8inch mids (HT210T0 almost ruler flat from 200 to 6khz) and want to put them on a conical horn. Maybe this is the route to go?Also from the Electrovoice picture it looks like it has a one to 3 inch straight throat before it enters the concial horn. What effect would this have? Increase high frequency extension?