Grills were on. I made some more measurements with the small Audio Technica condenser mic and a UA-100 preamp (old stuff). I used a log plot and it showed a dip around the suspected crossover. I then reversed the tweeter polarity and the dip went away. Of course, I don't know if the mic is flat but I suspect it is over this range. The room is about 13 x 16 and has some odd angles in it. The walls are 7 feet and the ceiling 8 feet with a slope between. One wall is like a bay window. Maybe that is good, maybe bad.
It concerns me that the response is flatter with the polarity reversed. I thought there was a universal definition of polarity. But I will listen to them this way for a while and see how it performs with music. To tell the truth, it sounds so much better than what I had before either way that it is hard to detect the differences.
It concerns me that the response is flatter with the polarity reversed. I thought there was a universal definition of polarity. But I will listen to them this way for a while and see how it performs with music. To tell the truth, it sounds so much better than what I had before either way that it is hard to detect the differences.