24  QSC Audio Products LLC 
  Application Engineering Team
Application: Mono passive tops and subs with two monitors on one 
mix
•  Two 8Ω medium-power single-woofer passive tops, mono 
•  Two 4Ω medium-power double subwoofers, mono 
•  Two 8Ω medium-power passive monitors, one mix
Equipment
Current draw 
120 V / 230 V
Rack 
spaces Total watts Weight
Old paradigm
Two low-power two-chan-
nel amps + high-power 
two-channel amp
~11 A / ~5.5 A 7 2800 ~140 lb
New paradigm
PLD4.2 4.7 A / 2.3 A 2 2600 18.5 lb