plots below (Fig 5) are the In-Room responses
of the Peerless 830869 (Black trace) with
the Selenium D220Ti/Pyle PH715 combo (Red
6 are the plots of the Nightingale-V with
the compression driver connected in Reversed
Phase (Blue trace) and In-Phase (Orange trace).
Note the deep notch when the compression driver
is wrongly connected.