Originally Posted by Bob Pariseau
With your ARC V1.2.4 results properly loaded in D2 V1.33, grab your trusty Radio Shack SPL meter and compare the levels it measures for the main speakers to what it measures for the subwoofer.
Use ARC mic position #1 with the SPL meter pointed straight up and with it set to "C" weighting and Slow response.
Go into Setup / Speaker Calibration, set Noise Sequence to Manual and scroll down to each speaker line to get the noise tone from that speaker. Use the Back button to turn off the noise.
The entries you find in Setup / Speaker Calibration should be the ones that ARC just Uploaded for you. Don't make any changes in there, just note what the SPL meter reads for each speaker. I'm not looking for minor variations here, but rather whether the subwoofer is WAY too hot compared to the other speakers.
Also double check that your actual speaker configuration (i.e., which speakers are used for Movie and Music) matches what you told ARC to use during Measurement for each of those.
Whoaaoooow! Here's my tabulation -
Front Left .. ARC -4 ..... SPL 72
Front Right . ARC -3.5 .. SPL 72
Center ....... ARC +4 .... SPL 73
Sur Left ..... ARC -0.5 .. SPL 71
Sur Right .... ARC +2 .... SPL 72
Sub ........... ARC 0 ...... SPL -- (Right off the scale!)
While measuring the sub with the SPL, I thought there was an earthquake!
Bob, you will appreciate it when I say I dare not wait to re-measure it with a higher scale. That was the first time I heard it bottoming and it is certainly not pleasant.
D2 v1.33 is certainly not recommended. I should have remained with v1.31c.
All speaker configurations are fine.