Review Hans Wetzel

[jonstatt]

I also look forward to anechoic chamber measurements.
In the meantime, if anyone wants some light relief,  see the following thread but please NOTE the caveats.
If necessary, take a pinch of salt  

http://devialetchat.com/showthread.php?tid=2117

Great effort and I am glad you posted this (I had somehow missed your post before now). As soon as I saw the dip at 150Hz though, I immediately realised you were hitting room effects even at 30cm away. It gives the impression of the slight U shape I expected to see though, but only an anechoic chamber will reveal the true response we all want to see. I would have thought you could put the mic as close as 10cm away with the speaker in the middle of the room to try and minimise room effects.