Mrtennis...Magnepan claims that the MG1.6 is flat on the high end, and my measurements confirm their claims (at both high and low frequencies). However, they suggest that many recordings have boosted high end so as to compensate for speakers that are not flat, and they furnish a one ohm resistor to replace the tweeter jumper so as to roll off the high end. I myself settled on 1.5 ohms. However, your 4 ohms does seem a bit extreme. Maybe you need to soup up the woofer. I did this by replacing the crossover inductor with a #10 (heavy) gauge air coil (which needs to be externally mounted because of its size). This mod was worth the expense and effort.
