36  QSC Audio Products LLC 
  Application Engineering Team
Application: Stereo bi-amp mains
•  Two 4Ω high-power double-woofer bi-amp loudspeakers, stereo
Equipment
Current draw 
120 V / 230 V
Rack 
spaces Total watts Weight
Old paradigm
Two high-power two-channel 
amps
~13 A / ~6.5 A 6 2800 ~130 lb
New paradigm
Two PLD4.3 4.8 A / 2.4 A 2 3100 42 lb