| 30 Hz Tapped Horn (script adapted from William Cowan's Website, http://diy.cowanaudio.com/)

Def_Const |Horn Dimensions

{
a1 = 200e-4; |Area at throat (cm^2)
a2 = 240e-4; |Area at rear of driver (cm^2)
a3 = 2000e-4; |Area at front of driver (cm^2)
a4 = 2060e-4; |Area at mouth (cm^2)
l1 = 15e-2; |Distance from throat to rear of driver (cm)
l2 = 420e-2; |Line distance from rear of driver to front of driver (cm)
l3 = 10e-2; |Distance from front of driver to mouth (cm)
}

Def_Driver 'Dr1'

| Mivoc Awm104 (x4)

Sd=1384cm2
fs=31Hz
Qes=0.27
Qms=7.4
Vas=148L
Re=3.1ohm
Le=2.3mH

system 'S1'

Driver Def='Dr1' Node=1=0=3=4
Waveguide 'W1' Node=2=3 STh={a1} SMo={a2} Len={l1} Conical
Waveguide 'W2' Node=3=4 STh={a2} SMo={a3} Len={l2} Conical
Horn 'H1' Node=4 STh={a3} SMo={a4} Len={l3} Conical