But what about the facts? Although Thiel claims that the phase is within 15 degrees, I have not been able to see that in any of my measurements. Time coherence on the direct sound is fine and at 10 ft measures within milliseconds. But then there is the indirect sound which is of course determined by the room characteristics. The first order xo have less minimal phase changes, but they are still there. Not to mention that the drivers are have their phase changes and they don't cancel each other out. I have worked on digital active cross overs to approach linear phase +- octave around cross over frequencies and was able to improve the phase coherence but did not have the ability to conduct a blind study to determine differences or improvements. I think we can do nowadays better to really establish the facts of time coherence and listening preferences especially with klippel measurement equipment becoming available. But I don't see the willingness to really find out the facts and integrate it with the subjective experiences.
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- 13544 posts total
- 13544 posts total