I just wanted to say thanks for the great guide on setting up and using the BFD. The manual that comes with the hardware would have been hard to decipher with regards to how to use the hardware to eq a sub.
I was able to get great results last night. First I got the 1/6 octave response flat to 80dB from 90Hz to 35Hz, plus rising in volume below 35dB down to 20Hz (receiver balance set to RIGHT and right speaker unplugged). Then I ran the LFE channel bass sweep in Avia over and over and tweaked my BFD settings. I was able to get it to stay within the 79-82dB range for most of the sweep, with only a few Hz here and there jumping/dipping outside that range. This is after a dip around 56Hz and 3 rather large, round spikes.
So, thanks for having the guide available. It really helped.
I will probably be setting up REW soon and experimenting with that (and/or the trial of TrueRTA), just to see how it all works.