[mjg100]

Thanks for the reply. I was getting it to calibrate, but I was not able to get any tones to my AVR. I did a search and found some posts from John M that let me know that the MacBook Pro's internal sound card would work. After that I found that one of the cables that I was using was bad. Switched out the cable and I have it working, though it is telling me that my levels are too low. I matched the levels, but part of the time (not every time) it said the levels were too low. The graph showed a nice flat response down to about 17 hz before it dropped off.