Well, this may seem odd. The first time I used the BFD I had my sub in the front right corner of my room (I know the sub has nothing to do with the input level on the BFD). Anyhow when I had the sub up front I had my Parasound AVC sub level set to -3 which yeilded me all green bars and an occasional yellow on the input level meter on the BFD. I abandond the BFD for a while because I had a bad room null at the listening position from 32-41hz which I could not fix. A week latter I moved the sub to the rear of the room in the back left corner took measurments and the null was gone and I had much better performance and a relativly smooth response with a few small dips and peaks so I thought I would try once again with the BFD to smooth the response out. Well I went to set the input level and I had to put the sub level on my AVC down all the way to -10. At -10 on heavy bass passages the input readings light the clip light frequently. I guess I just need to know if this is normal or should I unplug all the wires and start from scratch again to see if I missed something.