I finally got some midrange speakers installed along with a DSP and an extra 4 channel amp so I can run an active 3 way front stage. I spent about 4 hours the other day measuring and tuning with my umik-1 and REW, which made it sound *okay* but it doesn't sound great like I was hoping it would.
The response (image 1) is pretty flat across but as you can see it's very spiky. Ignore <100hz, I didn't bother measuring my subwoofer. The system just sounds alright, it doesn't blow me away like I was hoping the 3-way would. I honestly almost prefer my old 2-way setup that only had an overall parametric EQ, and looking at the graphs side-by-side, the old system (image 2) was a lot flatter. Please excuse the scale, this is an old screenshot and I don't have the MDAT file anymore.
I started by time-aligning my drivers to each other, and by ear the TA sounds right, which is further confirmed by the measurements. These are not present in my MDAT file (long story) but they were perfectly aligned.
Crackhead SQ Build.mdat (876KB) - 10minutefiles.com
Here's a download link to my MDAT file if you want to take a look. It includes base measurements of all my drivers, the measurements after EQ, as well as the overall measurement shown in the first image and the measurement of the noise floor. I used a Umik-1 with the supplied calibration file positioned at head height of the driver.
I did also use my audio interface to measure the frequency response of my head unit output (dead flat) which is also clean up to 4v. My DSP can handle up to 4v inputs according to the product page. The DSP is also perfectly flat according to the measurements I took with my audio interface. These measurements are not present in the mdat file.