Wayne Parham Messages: 18786 Registered: January 2001
Illuminati (33rd Degree)
If I remember, the Oris horn can be used down to around 250Hz. If you crossover there, wavelegth is about 4½ feet long. I'd probably use a simple first-order filter, just a 6.0mH coil in series with the woofer. You can expect summing to be good if the woofer is placed directly underneath the Oris horn.