Rhljazz,
I have a Tact 2.2 XP and interestingly have the same issues regarding what the unit does in the midrange on up. I have been nagging Tact about putting in a frequency correction cutoff for some time, and they supposedly have actually put that in a software update coming soon. Like what you mentioned, the correction in the bass (up to about 400Hz or so) seems very good, and the unit is consistent with the measurements in this range, but above that, it does some weird stuff. I also can't get very consistent measurements when I take them at different times. The corrected response seems kind of hollow to me. What does the corrected response sound like to you?
I have a Tact 2.2 XP and interestingly have the same issues regarding what the unit does in the midrange on up. I have been nagging Tact about putting in a frequency correction cutoff for some time, and they supposedly have actually put that in a software update coming soon. Like what you mentioned, the correction in the bass (up to about 400Hz or so) seems very good, and the unit is consistent with the measurements in this range, but above that, it does some weird stuff. I also can't get very consistent measurements when I take them at different times. The corrected response seems kind of hollow to me. What does the corrected response sound like to you?