Same. I am just now getting into the DSP game. Though, im not going to boost any. Ive set all my gains using 0dB tones, because my amp is 100w onto a 60w speaker(components passive). to align to my target curve, im having to do cuts as significant as -18dB(IIRC). This is definitely why I'm losing lots of output. This a result of bad speakers? The amp has a f'd up frequency response? JBL GTR-102
Doors are deadened and mostly sealed
Here is an example of my right components(passive) initial measurement
https://imgur.com/a/HUOGCOt