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...

Hi I still haven´t used the REW, but planning on using it fairly soon. The help files point out that a SPL calibration of 75dB must be made at the MIC position using white noise. Once the calibration has been made, can the level of the sweep signal be increased? I´m going to measure RT60 (ISO...