If I'm not mistaken the Revel B-15 uses a 3 band parametric EQ, very similar to the PARC that we manufacture. I am not terribly experienced with the B-15, but you can download our operators manual which does go through how to set up a parametric eq and calculate the values (including the Q factor). Based on my experience with Madrigal (not so much with Revel), their operators manual's are very good and should walk you through the process quite nicely. But feel free to use our manuals and they may add some helpful hints. Our web address is www.rivesaudio.com, just click on Products and go to the PARC page, there is a link for the manual.
