TomT,
In reply to:
Is it "possible" that it was a combination of the VP150 and your room acoustics?
The explanations are
here and
here.
There is nothing wrong with the vp150. You will measure the same effect with
ANY speaker (electrostatics may be excluded) with pink noise especially as you move across the plane of a different driver type (e.g. tweeter vs woofer). The effect was a drop of 2dB from the extreme left to right at about 8' distance from the VP150 when i took measurements last week. Tonygeno's numbers started about there and climbed somehow.
I measured no such effect when using sound tones and no effect when playing dialogue or music. For some reason this physical limitation of all speakers bothers tonygeno, obviously far more with the vp150 than any other centre he has auditioned even though a pink noise audible difference is not entirely relevant to normal sound tones. In such case, the M2 or another short speaker might be a alternative for a centre channel, but it has its own artifacts with pink noise as well.
There was a link in that post on the subject of pink noise and how it works that should explain alot.
