@erik_squires back when I was in acoustics years ago there was a lot of talk about frequencies riding on each other. This was when WMTMW was starting and the point was that frequencies were actually interacting nondestructively and preserving high frequencies along the axis of the companion frequencies. This could explain that plot. Sorry if that didn't make any sense.
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17 of 23 speakers in my studio and home theater systems are internally powered. My studio system is all Genelec and sounds very accurate. I know the best new concert and studio speakers are internally powered there are great technical reasons to design a speaker and an amp synergistically, this concept is much more important to sound quality than the vibration systems we often buy. How can an audiophile justify a vibration system of any sort with this in mind.
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@kota1 as I've said before companies like Sony, Yamaha, Harmon and the like can produce anything they want as far as quality tech. I bet someone like you could get someone like the @thespeakerdude to point you in a direction to make a top quality center speaker that you would never get access to otherwise. I would give a lot to have access to experimental prototypes (or notes) that these companies build that will probably be sold in 5 years from now. Of course we know he can't give you direct company info but he can point you in the right direction. Just saying. |
OP, looking carefully at the Stereophile measurement plots I think the issue is that the H and V windows are entirely different. Stereophile uses +- 90 degrees horizontally but a +- 15 degree window for vertical measurements. Under these conditions the natural tweeter roll off at 30 or more degrees won’t be visible in the vertical plots. If the GR research video uses the same windows then the same issues will apply. Normally in the vertical domain speakers perform better in the frequency domain with higher order filters because there's less destructive interference. |
@erik_squires - what time mark in the video. I looked at a few plots on another video and noted strange off axis. |
@thespeakerdude Sorry my friend, I don’t care enough about this video to go looking again. If I assume he’s using the same differences Stereophile uses in charting off-axis response then his plots make a lot more sense. The dip at the crossover region in the vertical plots is quite common, though I seem to remember a Tekton stand mount with absolutely horrible vertical response plots. If anyone is interested in comparing vertical FR with different speakers. |
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