Jeff B. wrote:The measurement shown in the first post was with the speaker sitting on a 25" stand in the middle of my living room with some furniture moved into the dining room reduce reflections. The mic is set on a stand pointed directly at the tweeter at the same height and one meter away. I take a sweep, look at the impulse, and determine the time to first reflection, then set my gate just prior to that, then take the measurement. However, with OmniMic I can display a blended response, so above about 300Hz it is gated quasi-anechoic and below that it is blended with the room response. This gives a reasonably accurate picture though, and I like this feature.
So, as you have already gathered, taking my measurement in this way I am 14 degrees off-axis on the tweeter. What you see in my response curve is a 14 degree measurement. If I raise the mic and take an orthogonal measurement there is a rising response at 20khz. This doesn't seem to be an issue though.
As for a full Quasi-anechoic response I believe one is displayed on page 20 of the pdf file I provided a link to above.
In a small room this speaker has surprisingly deep bass response, just ask Woodsart in his Kairos thread. This is one of the things that really surprised him.
Thanks for clearing this up for me:) I've measured quite a few loudspeakers and just wanted to make sure I knew what I was looking at as everyone measures things a little differently. Without a point of reference it is difficult to interpret.
Low distortion, phase coherent bookshelf that plays linear to 50Hz....... This really does set a new precedence.