I used my new external USB sound card and I want to be sure this was done correctly. I used the right CD input on my AVR from my right line output of the card. First I calibrated my subwoofer volume on the back of it to 80dB in REW. Then I raised the volume of my AVR until it said 75dB while playing the SPL calculation for testing with my mains. The output level in Windows XP was at the max setting for input and output using the Creative Surround Mixer window. It was set to stereo and there were no equalizers or effects on by default. I used a Radioshack digital SPL meter for measurements set to 80. During the subwoofer check level test prior to measurements, the output looked very good with -15 output and -15 input. During the check of the mains I got "Level OK -21.9" Before when I was using my subwoofer as the calibration I could not test my mains. I used the mic calculation file also this time. This is the result I got.
stereo - gold center red left orange right subwoofer - purple center black left blue right
The subs output looks like a little more than I'm used to seeing. During testing I did not have to change the volume on the AVR or subwoofer this way to test them both. Was I supposed to check them while calibrating the sub to test the sub and mains to test the mains as separate test? That might involve changing the output level on my AVR which I thought would change the calibration then.
Did I do this test correctly?