You should add an all pass filter to add a delay on the tweeter : All pass filter wiki
Delay ~ 176us to be evaluated.
You will have better transient 🙂
How do you determine when to add a delay or not?
I have this crossover f=2510.
Then I have added 2 allpass with delay 150uS in the highpass.
But the Phase curve for the HP looks a bit strange.
Is there something wrong?
the hp and lp filter complement each other, and no delay is needed
but when you add the drivers, then the phase relationship is spoilt
add drivers in your sim, represent them using 2nd order hp filters
Acoustic centers alignment 😉How do you determine when to add a delay or not?
They must be on the same plane.
If not you need to add delay. Sometimes the tweeter has delay like compression drivers.
Gotcha. So I'm guessing if you used something like REW to measure the response, you'd see the delay in the phase response?
Another way to "delay" the tweeter is an offset baffle or skewed front baffle or let the speaker lean backwards.
Yes. Simulating with measured data, if you filter your responses in a way you'd expect them to be in phase but they aren't, adjust the driver delay in the sim as an experiment to find out how much.you'd see the delay in the phase response?
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