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General Asylum General audio topics that don't fit into specific categories. |
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General Asylum General audio topics that don't fit into specific categories. |
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In Reply to: Speaker Measurements vs. Subjective Listening posted by lenw on February 18, 2007 at 11:26:57:
He is right when faithfulness to the source is the requirement to be met.A speaker is a reproducer which means that if it's meant to reproduce faithfully (in the sense of hifi) it should not add or subtract anything.
People say that what is measured does not tell what you hear. That is true but what is measured does actually relate to what we hear, and very much so. The amplitude response of a faithfully reproducing speakers has to be flat. Period. Any deviation from flat is bad. People may like it but that's another story. So you have a reference curve with which you can compare the measured curve.
I've seen measurements of the same speaker (and I mean the very same, a Spendor 120/1A) in different locations, done by different people using different gear. Of course the graphs were not identical but they were very similar, the global trends were the same.
Off-axis response: different people, different opinions. My opinion is that the response has to be linearly decreasing with frequency, without sharp changes. The respective curves at different angles
should be as parallel as possible.You don't want distortion or resonance, so the lower the better. Waterfall plots will tell you a lot.
Time alignment: ideal behaviour is a straight vertical line in impulse response. I've experienced that deviations from the ideal as not as nasty as many tend to think.
I think that Stereophile provides an excellent service to the readers by adding measurements to the subjective impressions. When I was looking for new speakers some time ago these measurements told me that I'd better spend my money elsewhere, but not in High-End.
And yes, when bad measurements go with a positive or even rave review, then IMO the reviewer doesn't know what to listen for!
Klaus
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Follow Ups
- Re: Speaker Measurements vs. Subjective Listening - KlausR. 08:30:59 02/19/07 (0)
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