Finally getting around to EQ'ing my sub in my new basement set up. A couple of questions: 1. Should I disconnect all speakers w/ the exception of the subwoofer? I initally took readings with all speakers active. (This may explain the drop off at 80hz, 89hz & 100hz.) 2. I took the readings from about ear level from a spot between the two main listening seats. Should I take the readings from various spots & average the results? I have an SVS Ultra (original model). It is calibrated +2 over my other speakers. It does bottom out on some high volume demo material, such as the plane crash from Fight Club and some of the THX intros. Here's my initial readings from 17.5 to 100 (adjusted for the Radio Shack sound level meter): 83.5 86.5 84.5 79 78.5 81 83.5 89.5 81 78.5 79.5 81.5 79.5 71.5 69.5 72 I'm thinking I should cut the following frequencies: 17.5, 20, 22, 40, 63, & 72. Any other thoughts?