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But then when I go to take a measurment, and first "check levels", I am returned with a "level too low" message
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That's because the
Check Levels in the Measurement screen and the
Check Levels in the Settings screen use different values to generate the pink noise.
The
Check Levels in the the settings screen uses the fact that you have the 'check/set levels with subwoofer' pull-down set. To double check and verify that the end sweep frequency that you have set in the Measurement panel matches that
subwoofer setting, its'
Check Level uses the end frequency as the pink noise hi-limit cutoff. So if you had 20KHz as the end frequency to measure for your sweep, you can see how the pink noise would be different (between the two Check Levels) and as such the low level signal you're experiencing.
Set the End Frequency in the Measurement panel to 200Hz..................
brucek