I have dual SVS PB-2000's! I'm going to start at 80 but my receiver only lets me set my crossovers as 50, 80, 100, and 120hz. I'd like to try 50hz because all my speakers can handle them except my SVS prime elevations (my height channels) which have a frequency response of (55hz-20khz). Could I potentially damage them if I set the crossover to 50hz?