frequency sweep

Is there a FLAC file for a frequency sweep to use with REW? I'd rather not use the output of my laptop when doing measurements.

Why is the default sweep level -12? Does it matter if I change it? When playing back sweeps or pink noise at default level, I can only raise the volume of my AVR to -25db before I hit 75db. Is it OK to change the sweep level so I can play them back with my AVR at 0db? Does any of this even...

Last night I had the master volume on my AVP set too high without realizing it. I ran a frequency sweep 20-20kHz with my UMIK-1 facing the ceiling and 90 degree cal file from the MLP, which is about 13.5 feet from the speakers. Because the MV was set way to high, REW showed a warning in red "0.0...