Wayne Parham Messages: 18835 Registered: January 2001
Illuminati (33rd Degree)
The front chamber acts as a low-pass filter, so you can pretty much size it to suit. Most times, you only really want a large one on basshorns. The throat, mouth and each section can be whatever shape you want, as the program only deals in cross-section area. About the number of sections, you actually can have a single section horn, such as is the case with a pure conical. You only need to add sections when there is a change in expansion rate.