]Let me tell you, I know a phd, vibration expert, who now moved from here out to lost wages, and the speakers he designed, and I got to listen to many times, were absolutely astounding to me. To others in our audio club, the sounded dull, flat, etc. Those things are beasue they had speakers with frequency aberrations, suck outs, room issues, distorting amps and all kinds of stuff. I spent a lot oquality time with him and listeniin in his basement listetning room, with all kinds of room treatments and stuff. His system was tri-amped, active crossovers, and using just "basic" electronics. I used to listen through headphones and then lift them up then hear his speakers and go back and forth that way, and was very impressed. But, his speakers had all kinds of mechanica tricks which I know but can not divulge, as he is starting a speaker company out in las vegas. He shared with me his secrets. And they turned out to be elegant and common sense to this old boy.