Originally Posted by erniec
I guess the real answer or question is that with the AIX disk (or other test disks) the LFE level should be the same as the other channels as opposed to a 10db higher reading on a SPL meter.
Yes. Calibration discs are designed so that you can set all speakers, including the sub, at the same SPL meter reading.
Calibrating for either analog or digital is pretty straightforward. The challenges arise when you need to calibrate for both. If you are just doing analog, you can simply turn up the sub, which provides the needed 10-15dB boost. But, turning up the sub doubles the boost for digital. So, you need to find some combination of sub and processor level trims that gives you the right calibration for both analog and digital.