"....The ability to run stereo speakers while simultaneously
mono output from the same amplifier is accomplished by running the
stereo speakers normally and tapping into the appropriate wires for
the "mixed mono" channel (left channel positive for the positive
speaker wire and right channel negative for the negative speaker
wire). Speaker impedance should be no lower than 2 Ohms on the
stereo channels and 4 ohms on the mono channel.
NOTE: Passive crossovers must be used for "mixed mono" operation.
Choose a low pass crossover around 100Hz for your subwoofer, then
choose a high pass crossover for your stereo channels. The high
pass crossover must be at the same or slightly higher frequency than
the low pass crossover to maintain the correct impedance. See your
PrecisionPower dealer or call 1-800-62POWER for more information
about passive crossovers.
Mixed Mono Output......"