Yeah, I know that PEQ with 10 bands would be great to have, struggled a bit with a peak at around 3 kHz, since I could adjust 2.5 kHz 4 kHz but nothing in-between. The Kenwood product page mentions something about being able to adjust the Q but I haven't found that. Might be an error on their website.1. Unless you have a DSP with a few bands of parametric EQ, you will have difficulties. But you may be able to make broad brush improvements.
Hmm I'll have to look into the differences between the pink noise and sweep methods. Thanks for the tip!2. Log-sweep measurements are much better than pink noise - they reduce the influence of background noise and get you phase info.
No, haven't looked into it yet. I too suspect it to be a phase issue. My tweeters don't go that low so it is probably the woofers. Maybe it will flatten out with some time alignment (head unit has some basic TA that I need to look into). I'm guessing the dips and peaks between 1 kHz and 2 kHz might me because of phase as well, as my tweeters are crossed over at 2 kHz according to the spec sheets.3. That dip at 550hz or thereabouts - I bet is a phase issue. Could be crossover induced, speaker position induced, or acoustics induced. Have you looked at the phase plot?
That is actually one of the first things I learned about EQ, so all of my adjustments have been cuts only.4. You should probably not try to fix phase issues with an EQ bump.
Yeah, I am convinced, a DSP and going active has been added to my build plan. As my wallet is a little bit on the light side, however, it just might take some time.5. DSP will not just be better at EQ, it will allow time alignment Left-Right, which will affect EQ (due to phase) massively
6. Going active will open a new world of possibilities.
Just don't get too hung up on a graph if you only have a graphic EQ. Use it to know where to make some level cuts, fine tune it by ear, and live with what you have, until you get a DSP. That would be my advice.