Has anyone on here taken SPL measurements across the audible spectrum to figure out how to best tune/tweak your sound setup? Until this weekend I tuned my speakers based on my ears but this new free s/w I grabbed called REW shows how ugly the freq response is in the car. I haven't invested lots of money into high end gear but I'm really wondering just how good the interior can be made to remove those peaks/dips. Over 15dB is just nasty - see the chart below. FYI - I don't trust the mic above 10khz. The red line is no eq settings the yellow line is after I adjusted my 7 band eq.
[IMG]
[/IMG]