I'm just glad my settings were proven to be really close....that was satisfying......and it's much easier to see than the impulse measurements in rew......
Agree 100%. TDA gives much more informative results. FR maybe not so accurate (compared to Workshop/APL), but might give all necessary information on phase problems at the XO point. Changing the filter order helps to eliminate the dips. It is easy and quick to do with TDA: switch - test - switch - test... All done just in halv an hour.
Experience shows that the higher filter order results in a bigger group delay, which is more difficult to struggle against. With some capacity limits (10ms of HU and 5ms of APL1) I simply had to choose the first order at much lower XO point for the sub (40Hz), which might be very unusual. Many people use normally 24dB/oct at 80 or even 100Hz. After measurements with the TDA it came out that it was a bad choice for my present install. It was not possible to come to this conclusion without TDA software.
Null delay at DFR-graph (for mids and tweeters) together with a smooth FR at XO points (both front channels at the same graph) - might be a goal when optimizing TA with the help of TDA. Yes, we do not hear phase problems well, that is why a reliable measuring tool is a good help in this case. Above appr. 4kHz correction might be done by the sound volume instead of delaying in time. This is even more important for the passive XO.
Take a look on my first picture in the post No.26. it is easy to observe cross-cancelling at several frequencies (both fronts are shown there). Slight adjustment of TA made this problem much less. You may try this in your car.
mattkim1337 · updated 
