We would be a lot more help to you if you showed the filtered measurements like I suggested in post # 712.
Without that information, we are left to guess at what you are doing.
Here's a sim inspired suggestion. Might not work, but sure looked good in the sim. It's simple. Change the mid filter to 4th order Butterworth at 2.1K. Leave the tweeter at 2.5k LR4. Maybe in a week, we will see. Till then, you could listen to it, and guess about how well it will measure.
Here are the driver measurements from the 3rd and 4th sessions:
- the 3rd one has raw tweeter and woofers, including off axis (the mid measurement I have messed up). Large room (church). Mic distance 1m, distance to floor 2m+
- the 4th is tw and mid, on axis only, raw and then eq-ed a bit and bfc on mid. there is also LR4 applied. At home, distance to floor/ceiling abt 1.2-1.1m depending on driver. mic distance 60cm.
I came up with some interesting results. Still playing, but here's what I see.
Your tweeter response looks perfect. I made changes to the mid response. It looked pretty good, but the tweeter was perfect, so worked with the mid.
What I did was this. I made an frd of your filtered mid, and tweeter responses.
Then I loaded those filtered responses into my PCD sim software. They added nice, but didn't have a remarkable reverse null..
I noticed that you did not notch the mid peak near 7k, so I added that EQ in the software. I notched it 20dB. The Q is 1. The resulting mid roll-off became 30dB per octave, and the reverse null looked great.
AllenB will fuss about looking at that, so I also looked at the phase. As I added the notch at 7k, they lined up better. Much better. There is no delay on either driver.
So, assuming the phase in the data is accurate, adding a notch at 7k seems to improve things. I also added a touch of EQ at 1.7k. 2dB with a Q of 3.
On the phase graph, the blue woofer phase still shows. I tried to remove it for clarity, but could not for some reason.
Your tweeter response looks perfect. I made changes to the mid response. It looked pretty good, but the tweeter was perfect, so worked with the mid.
What I did was this. I made an frd of your filtered mid, and tweeter responses.
Then I loaded those filtered responses into my PCD sim software. They added nice, but didn't have a remarkable reverse null..
I noticed that you did not notch the mid peak near 7k, so I added that EQ in the software. I notched it 20dB. The Q is 1. The resulting mid roll-off became 30dB per octave, and the reverse null looked great.
AllenB will fuss about looking at that, so I also looked at the phase. As I added the notch at 7k, they lined up better. Much better. There is no delay on either driver.
So, assuming the phase in the data is accurate, adding a notch at 7k seems to improve things. I also added a touch of EQ at 1.7k. 2dB with a Q of 3.
On the phase graph, the blue woofer phase still shows. I tried to remove it for clarity, but could not for some reason.
