I need some literature on horn designs because I want to dip my feet at making tapped horn subs. I understand the concept of tapped horns but horns by themselves are eluding me. I realize that horns are usually exponential, but what about something like this
. They both seem uniformally increasing in area from the throat to the mouth. So do these horns fall under a conical horn design? or is the cross-sectional area of the horn exponentially increasing? I have been looking at this
reference and from there:
"Modern horn designs typically feature some form of conical, exponential or tractrix taper. Roughly speaking, the slower the flare rate, the deeper and lower frequencies the horn will reproduce for a given length of horn. For example, a horn area growth rate of 30% per foot will allow reproduction down to about 30 Hz; 1000% per foot (10 times area) per foot provides midrange reproduction; 100 times area per foot is used in high frequency horns."
that is was confuses me...
thanks for any explanation guys...