I’ve measured with a sound meter and also with sweeps in REW. I personally do not enjoy listening when adjusted for a flat response as it’s WAYYY too bright sounding to my ears. I personally prefer a gradual downward slope into the high frequencies. I only use the REW measurements to find and correct ringing, room modes, nulls, peaks, etc with room treatments. I’ve done all my crossover adjustments to what sounds pleasing to my ears. I always return to a specific setting regardless of REW measurements, so that says a lot (at least to me). The crossovers can sound absolutely AMAZING but unfortunately at levels that I don’t indulge in often. Like I said in the first post, it takes at least 95 dB to get things cooking!