tinitus: any link to them? or description?
will see if I can work out some documentation describing them
they are calculated for a cheap 12" Fane(12-300)
should I build bass module/bins for them, I would consider slot load style bandpass
I designed it for bass guitar, but experience from previous project tought me to build two, just in case ....
might start experimental design where slot shape and size can be changed
but I need drivers, and they cost money
but since this kind of midbass horn doesn't need any highpass crossover, I guess a simpler(and more predictable) vented BR bass bin with active filter would do
for the top/tweeter, a unity horn design is tempting to try