In my den I typically listen to the speakers at a volume of around 65 to 75 decibels on my couch about 2 meters from the speakers. I rarely, if ever, hit 80 or 85 decibels. Since my KEF LS50s have a sensitivity of 85 dB/W/m, and my listening volume is always below 79 dB at 2 meters, would I gain...