Holy crap Batman. Having little to do while sitting in a hotel room in Orlando at a boring meeting, I was perusing old WBF threads when I came across the "Harmon Synthesis Curve" posted by Robh3606 almost 4 years ago! Since I am probably TLMFEWUT (the last mother-fkr on earth who still uses a TacT 2.2XP) I can't begin to tell you how absolutely shocked I was to see this curve. After nearly 10 years of adjusting TacT target curves, it turns out that my current target curve is an almost exact replica of the Harmon curve. There are two salient features of the curve that deserve comment. The first is the steep roll off below 30 Hz. This is unusual as it is not seen on the B&K curve, nor any factory TacT curve. Yet I find it is almost precisely what sounds best in my system. Any curve that approaches flat to 20Hz is invariably very wrong in my system. Using a pair of JL Gotham subs (w Pipedream towers), a roll off below 30 Hz as seen the Harmon curve, is the one that sounds musically correct in my system and believe me, the bass can crack concrete. Second, and unprecedented in my book, is the ultra critical area between 80 and 120 dB, otherwise known as the "valley of death" because that's exactly where most EQ systems fail. I have never seen a target curve where there is a relatively precipitous 5-6db drop in this critical area but again, this is what I have come to realize works the best in my system after hundreds (thousands?) of hours of trial and error over many, many years. I certainly wished I had seen this post several years ago. It certainly would have saved me a great deal of agita, anxiety and self-medication!!
