Hi, I've got a similar thread running at speakers & subwoofers, but I'm not getting much response there... I recently got the AVIA Calibration disc, and have been running the LFE-sweep 100Hz to 20Hz. Is it normal for it to slope up from 100Hz to 65Hz? I'm measuring zilch (well, a little) response from the sub from 100hz to 70hz I know crossovers slope at the crossover points, and are not solid boundaries. So I set my crossover to 120Hz and my speakers to small. My mains are not participating when running the sweep, which is logical. But this would mean the full 120-20 LFE bandwith would be sent to the sub, but funnily enough this is not the case. What gives?