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Old 11-10-07, 08:28 AM   #1 (Link)
 
Kruppy
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What am I doing wrong? First REW Measurements


First off this is my first attempt at an REW measurement and I have not had a lot of time to trouble shoot what's going on (I've already had a good couple hours into the set up).

I think I have the sound card calibrated correctly.

Why do things get so out of control at 200Hz and higher?

Why do I see output increase from about 7Hz and lower? That makes absolutely no sense to me.

I'm trying to evaluate my Martin Logan SL3s without a subwoofer.

What should I have my SPL meter set at fast or slow response for C weighted? I don't remember seeing that in the help file. The graph posted here is fast response, I did collect slow response also, but it's basically the same shape curve just a number of dBs lower.

I think I also had the levels set up correct, targeting 75 dBs.

When running a measurement, what kind of time setting should this this run for?

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