Slope-selectable variable electronic crossovers -The BPX500.1 is equipped with a variable electronic crossover capable of setting the slope rate at 12dB or 24dB per octave. The crossover adjustment range is 32Hz - 320Hz.Unlike conventional mono subwoofer amplifiers that only deliver their maximum power into a single impedance, the BPX500.1 is a two-channel amplifier that can be bridged to deliver double the voltage of a single channel into impedances between 2 and 4 o…