It's basically a bass reflex cabinet with 2 x 12" in it (probably 130 litre nett. tuned to around 40 Hz), with an added tweeter crossed over at 3.5 kHz, 18 dB octave, with a potentiometer to regulate the tweeter level. It's pretty straight forward really. Only thing you've to guess is what drivers to use, download WinISD Pro and have a go!
Best regards
Cubo
