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Old November 16th, 2018, 9:16 AM
rbpeirce rbpeirce is offline
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ULS-15 Output

I am trying to measure the SW response at my listening position. I am using REW with 1-octave smoothing just to get a gross idea. I am running from 20-200Hz with the crossover at 160Hz for testing purposes. I would expect each reading to be the same as the last. It isn't. In fact some readings are radically different, especially at the lower frequencies. I have turned everything off I can think of. I don't know what else to do about this. Any ideas? Unless I can get consistent baseline readings I won't be able to make valid adjustments.
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Old November 16th, 2018, 2:44 PM
Kevin_Hsu Kevin_Hsu is offline
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What are you using to measure the response?
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Old November 16th, 2018, 6:42 PM
rbpeirce rbpeirce is offline
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I figured out the problem. I didn't have enough output. It turn out the lower the output the sloppier the reading, at least at low frequencies. Once I got it up to a reasonable level the readings were pretty much identical. There was a very slight variation but it was hardly measurable, not worth worrying about.

This time around I balanced the subs and mains independently and then balanced all four together for the final adjustment.
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