Just in case anyone's interested, breaking these in before testing on a simple OB panel at my desktop. Have then crossed to a sub under my desk at 100hz and they sound pretty not bad. Highs are right there and crystal clear. Mids and midbass a bit weak which leads me to believe these are best suited to a ported box or some kind of TL. I'll reserve my final alignment once they've been measured. Very well made driver by the way. Construction is first rate with no noticable flaws. Magnet housing loaded with heat sinks so i imagine these can get pretty loud provided the mfgrs efficiency rating of 90db is accurate.