Black Trace in Fig 11 is the Summed Response of the
RS180s and the PDS382.
Pyle PDS382 must be connected in Reverse Phase, otherwise
a deep notch will result.
clarity, Fig 12 below shows the Nightingale response
without the overlaying HP and LP.
13 is the associated passive crossover network.
All Inductors are 18 awg Air Core. All
Capacitors are Polypropylene.