It is possible to compare this result with the one from Arta (smoothed 1/12e octave). As you can see the result is quite similar.
First impressions are that the frequency response is quite linear with some small +/- 1 dB variations. Bass and tweeter above 5kHz seem to be just above the average level, but eventhough the box seem to be very well balanced...
Here is the waterfall diagramm measured with Sofmea :
Do these measurements match your listening impressions ?