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REW vs Spinorama

luft262

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Hypothetical question, but if a person had some random, OK speakers, say some random Klipsch standmounts or something, that had kind of poor spinoramas. They used automatic EQ, say Dirac or Audyssey and afterwards took some REW measurements and found the speakers to be pretty flat with good measurements and they sounded pretty good too. Would that indicate that the EQ fixed the speakers' problems or is REW just not able to identify the original problems identified in the spinorama and the speakers most likely still suffer flaws?
 

levimax

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Would that indicate that the EQ fixed the speakers' problems or is REW just not able to identify the original problems identified in the spinorama and the speakers most likely still suffer flaws?
In your scenario most likely both. If you have enough time and a quiet outside space you can do spinorama with REW. Used inside with some care (MMM or gated) REW will give decent on axis measurements which is helpful but not as thourough as spinorama.
 
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luft262

luft262

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In your scenario most likely both. If you have enough time and a quiet outside space you can do spinorama with REW. Used inside with some care (MMM or gated) REW will give decent on axis measurements which is helpful but not as thourough as spinorama.
So basically the EQ would most likely have fixed some of the flaws, but not all of them, and it would be difficult to impossible to know which flaws from the spinorama had been fixed and which ones hadn't by just using basic REW measurements. Meaning EQ is a hell of a lot better than nothing, but it can't fix all aspects of poor speaker design and it may not be possible to visualize what was fixed and what wasn't? Thank you for you help.
 

HarmonicTHD

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So basically the EQ would most likely have fixed some of the flaws, but not all of them, and it would be difficult to impossible to know which flaws from the spinorama had been fixed and which ones hadn't by just using basic REW measurements. Meaning EQ is a hell of a lot better than nothing, but it can't fix all aspects of poor speaker design and it may not be possible to visualize what was fixed and what wasn't? Thank you for you help.
Directivity mismatches, resonances, distortions or compression problems would not be able to be fixed with EQ most likely at least only within limits.
 

Cote Dazur

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Hypothetical question
I like your question, to understand what is at play, we need to think as to why speakers need to be measured in an anechoic or quasi anechoic environment.
The reason is that any other way and what you are measuring is the speaker and room, and even that measurement will change depending where the speakers are in the room and where the measurement is taking place. In other word the same speaker will measure differently.
With that in mind, yes, you can make an average speaker sound great with careful positioning, room treatment, some kind of electronic (EQ, Dirac, Audessey, etc...). Or make a great measuring speaker sound very average by ignoring careful positioning. Are better measuring speaker easier to position and EQ? Probably.
A great speaker can sound only as good as how it is set up, not surprisingly, all the people raving about their Genelec and Revel, in here, are also raving about REW measurement and DSP, proper room acoustic and speaker placement. You never hear, those speaker are so great they will sound great anywhere, the best you might get is that they will be easier to place and EQ.
 
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