Quote Originally Posted by Ian Mackenzie View Post
Here are some guidelines for matching the crossover characteristics to jbl systems using your drivers in a 4 way monitor.

These characteristics are set for the driver locations on the baffle and the amplitude and phase characteristics of the drivers. The guidelines refer to the voltage drives not the amplitude response.

Use the Crossover Butter-worth filter characteristics
Woofer low pass
2nd Order Butter-worth 260 hertz


Mid 2123
Low pass 2nd order Butterworth 360 hertz
High pass 3rd order Butterworth 1,100 hertz
Wire the mid electrically out of phase.

I tried this and I like it so far. I had to turn down the 2245's amp slightly. I think I will have a bit of time in the next few weeks to play with this. I left the woofer high pass in there for now.