First Attempt with REW, I have questions

For starters, I followed David Brancato's videos. Because of the detail and the length, I made a step by step list of things to do. It ended up being four pages long and I used that for my first test.

I have a set of speakers I built using a kit from Parts Express.

The main question I have relates to phase. I used rePhase and then created the FIR filters. I have a QSC Core 250 that is handling the processing. One difference between the video and what I did is that I set the taps to 1024 to keep the delay to around 10ms. The initial phase trace wasn't terrible. But when I did a final measurement after adding in the FIR filter, the phase wrapped around 100 times. That wasn't expected and I'm sure I did something wrong. Pictures below of the initial measurement, the predicted result, and the final measurement.

Initial (7 position average)


Predicted



Actual measurement with FIR filters





Because I'm new I can't post a link to my instructions or the video

Got it. Thank you. Just so I grasp what happened, the 10ms of delay from the FIR filter caused the IR timing offset. I had a loop back into REW for timing purposes so the reference loop back and measured responses were not aligned causing the phase trace to show that.

Here is the adjusted view with the new IR alignment:

If anyone is interested, here's the instructions I pulled from the David Brancato video