Im attempting to do high level compression sweeps with a new pair of speakers to measure performance up to reference level of 105 dB. I've measured my subs with a windows laptop to above 115 dB with no issues, but have just switched to a Mac as the windows laptop has died. I get up to the 85-90 dB sweep level with one of my speakers, at which point I start getting a warning that I am clipping the input. Distortion on this sweep is mostly around 1% and lower so I am well below maximum output capability. Is it possible that the SPL is actually much higher than what is being recorded? Attempting a higher level sweep than this actually shuts down the measurement due to excessive clipping(of input). I am using a Umik-1 mic just as for the subwoofer sweeps, which I have not repeated on the Mac yet. Calibration file has been downloaded.
Any thoughts or suggestions? I've thought about getting a decent SPL meter to compare output levels to see if there is indeed a false reading.
Any thoughts or suggestions? I've thought about getting a decent SPL meter to compare output levels to see if there is indeed a false reading.
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