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How do we set the initial recommended 75dB level of the AVR when using the REW?I understand that we should have the SPL meter RS or CM-140 to measure the 75dB but is this on a certain frequency initially say at 4khz just like the Rives Audio manual test CD recommended?or the REW gives a initial sweep of the frequency band selected and adjust the AVR volume to get the 75dB level?Using the sweep signal will not give a steady dB output level and the SPL will read varying signal level right?or is it using the pink noise to set the 75dB level?
 
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