20
QSC Audio Products LLC
Application Engineering Team
2. Real-World Applications with PLD
Loudspeaker power capacities
Loudspeaker manufacturers publish power ratings for their systems, but you can also estimate the appropriate amp power
by measuring the woofer’s voice coil diameter. Loudspeaker drivers with larger voice coils can generally handle higher
power than those with smaller ones. The dust cap in the center of the cone may or may not be the same diameter as the
voice coil; consult the manufacturer’s spec sheet to be sure.
# of woofers
Impedance
Recommended Amp Power
Configuration
Medium power
1
8
Ω
200 to 400 watts
PLD4.2 single channel
2
4
Ω
400 to 800 watts
PLD4.3 single channel
High power
1
8
Ω
400 to 800 watts
PLD4.3 single channel
2
4
Ω
800 to 1600 watts
PLD4.5 single channel
