As can be seen by the DSP signal flow, when the amplifier is placed in Bridge 
mode, CH1 signal is taken post-crossover, inverted, and sent to CH2 output.  This 
ensures that the gains are matched and that the same signal is on both outputs 
(CH2 = -CH1).  When in Bridge mode, both channel’s clip signals are or’ed 
together and the output clip indicators are driven from the same signal.