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Old 09-05-07, 04:54 PM   #54 (Link)
 
brucek
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Re: sub hums if I turn on SPL meter

OK, I see a few problems.

Never use smoothing for subwoofer frequencies. This is only used when measuring full range.

Note that your graphs are in the LINEAR mode. Change them to LOG mode by clicking on the Freq Axis Icon at the top right hand side of the REW screen.

Also set the horizontal axis to 15hz-200Hz and the vertical axis to 45dB-105dB using the Graph Limits ICON at the top right hand side of the REW screen.

brucek
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