jwc.....Glad you like it, look at this.
Now I have change from DBX 223XL to Driverack PA+ and done some adjustment. As you can see the freq response has improved since the last time. I have not done any other changes such as room treatment or different speakers position, everthing is the same as before.
The difference in the bass region is due to the cutoff freq at 40 Hz Butterworth12 slope. A guy from the DBX forum advice me too do this, he said I could damage the cone. I can't explain why but I am testing it for now, will come back with some more info on that.
The reverb time T30 and CSD is the same, nothing has change here.
The green is DBX PA+ and the yellow is before.