As I mentioned on another VX10 thread, I've owned a VX10 for over 2 years and I have experimented with placement and settings. I've found that due to lower input sensitivity, using a Y connector and setting the line level output to 5 or 6 makes a big difference in over all performance, but you need to leave your self a least 3 or 4 db of head room. You can then adjust the gain on the sub to achieve the proper output. Velodyne recommends a setting around 9.0'clock but I think that's a bit low and too general, not leaving much room for adjustment. However I don't recommend going much higher then 12. With proper placement and calibration the VX10 is very capable in a smaller room. I never experienced any strain or port noise even with the most demanding sound tracks and contrary to some critics beliefs, it can vibrate the walls when it needs to. 
Ian
Ian
