Overview:

PLD Series Processing Amplifiers represent a revolutionary advancement in technology and innovation. Featuring Flexible Amplifier Summing Technology™ (FAST), advanced DSP and loudspeaker management, next-generation Class D amplification with Power Factor Correction (PFC), and an unmatched user experience, PLD provides robust and extraordinarily high fidelity power to drive multiple channels and configurations of loudspeakers with minimal operator complexity.

The QSC PLD Series represents a revolutionary advancement in amplifier technology and innovation. Designed specifically for the needs of portable and production sound system users, PLD provides efficient, robust and extraordinarily high fidelity power to drive multiple channels and configurations of loudspeakers while simultaneously deploying sophisticated digital processing – all with minimal operator complexity. The PLD Series consists of three powerful, lightweight, four-channel amplifiers, each with onboard, advanced DSP and the capability to configure and combine channels in various ways to drive a wide range of loudspeaker systems. These amplifiers not only make your system perform better today, but also provide a wide and flexible range of options for future system growth.


Flexible Amplifier Summing Technology™ (FAST)

Advanced Amplifier Technology

System Processing

Preset Wizardry

Space Efficient

Simple to Use

Features:

  • Flexible Amplifier Summing Technology™ (FAST) drives most any loudspeaker system or configuration by distributing total amplifier power across one, two, three or all four channels.
  • Four channels of full function onboard loudspeaker DSP with Crossover and Parametric EQ Filters, Limiting and Alignment Delay eliminate the need for outboard loudspeaker processors.
  • Powerful Intrinsic Correction™ processing maximizes the sonic performance of QSC loudspeakers.
  • 20 Factory Preset configurations that can be modified and stored in the 50 User Presets.
  • PowerLight universal switch mode power supply with PFC for highest effiency, improved audio performance, and low weight.
  • Four Input XLR connectors, and six NL-4 Output connectors.
  • Integrated front panel with channel Select and Mute buttons, Input and Output LED Metering, 400x240 LCD, intuitive navigation buttons, LED power button and indicator, and cast aluminum handles.
  • Preset Wizard simplifies amplifier configuration providing loudspeaker selection from a list of the top selling passive speakers.
Front Panel Features:

1. Output channels are labeled A, B, C, and D

2. Output Channel Mute Buttons and LEDs (Red)

3. Output Channel Limiter LEDs (Red)

4. Output Channel -10 dB Below Limiter Activation LEDs (Blue)

5. Output Channel -20 dB Below Clip LEDs (Blue)

6. Soft Power Button (Blue/Red)

7. Channel Select Buttons and LEDs (Amber for Input, Blue for Output)

8. Input Channel Clip LEDs (Red)

9. Input Channel Signal-Present LEDs (Blue)

10. Input channels are labeled 1, 2, 3, and 4

11. LCD Graphic Display

12. HOME Button

13. ENTER Button

14. MASTER CONTROL Knob

15. EXIT Button

16. GAIN Button

Screen Types:

There are three screen types: Informational, Navigational, and Parameter Editing.


Rear Panel Features:

1. USB Type B, 4-Pin

2. Four XLR-F Female Line Input Connectors

3. Four XLR-M Male Line Output Connectors

4. Four NL4 Output Connectors (Individual and Parallel)

5. Two NL4 Output Connectors (Bridged Outputs)

6. Cooling Fan

7. Power Switch

8. Locking IEC Power Connection (100 – 240 VAC, 50 – 60 Hz)

9. Rear Rack-mount Brackets

10. Front Rack-mount Brackets

NOTE!: The PLD4.3, and PLD4.5 models have a different rear panel configuration than the PLD4.2 rear panel. The difference is the  position of the fan and the connectors.

Set Up the Output Configuration

After you've selected the type of speakers connected to the PLD amp, you can configure how the outputs are configured. You can run all four outputs parallel, bridge them in pairs, go 2-channel bridged, run 1 and 2 parallel and bridge 3 and 4, etc. These are just a few examples of how you can route the outputs. You can configure the PLD amp to meet just about any speaker and load configuration.

PLD Amplifier Signal Flow:

QSC PLD 4.5 Four-Channel Power Amplifier Specifications

4 Channel:

  • 8Ω: 1150 Watts (Continuous); 1200 Watts (Burst)
  • 4Ω: 1250 Watts (Continuous); 2000 Watts (Burst)
  • 2Ω: 625 Watts (Continuous); 1600 Watts (Burst)

2 Channel:

  • 8Ω: 2250 Watts (Continuous); 4000 Watts (Burst)
  • 4Ω: 2250 Watts (Continuous); 2400 Watts (Burst)
  • 2Ω: 2100 Watts (Continuous); 4000 Watts (Burst)

1 Channel:

  • 8Ω: 4200 Watts (Continuous); 4500 Watts (Burst)
  • 4Ω: 4200 Watts (Continuous); 7500 Watts (Burst)
  • 2Ω: 4250 Watts (Continuous); 4500 Watts (Burst)
  • 1Ω: 3700 Watts (Continuous); 7500 Watts (Burst)

Maximum Distortion:

  • 4Ω - 8Ω: 1.00%

Frequency Response (8Ω):

  • 20 Hz - 15 kHz +/- 0.2 dB
  • 20 Hz - 20 kHz +0.2 dB / -0.7 dB

Noise:

  • Unweighted Output Unmuted: -101 dB
  • Weighted Output Muted: -109 dB

Gain (1.2V Setting):

  • 38.4 dB

Damping Factor:

  • >150

Input Impedance:

  • >10k, balanced or unbalanced

Maximum Input Level:

  • (3.9V Setting): 12.28V (+24 dBu)
  • (1.2V Setting): 3.88V (+14 dBu)

Controls And Indicators (Front):

  • Power
  • Channel MUTE Buttons
  • Channel SELECT Buttons
  • Channel Input Signal and CLIP LED Indicators
  • Channel Output and LIMIT LED Meters
  • HOME, ENTER, EXIT, GAIN Navigation Buttons
  • Control Knob

Controls And Indicators (Rear): 

  • AC Power Disconnect
  • Input Connectors: Female XLR
  • Output Connectors: NL4

Amplifier And Load Protection:

  • Short circuit, open circuit
  • Thermal
  • RF protection
  • On/Off muting
  • DC fault shutdown
  • Active inrush limiting
  • Input current limiting

Ac Power Input: 

  • Universal Power Supply 100 - 240 VAC, 50 - 60 Hz
Dimensions (HxWxD):
  • 3.5 x 19 x 16 inches (89 x 482 x 406 mm)

Weight: 

  • 22 lbs (10 kg)

Agency Approvals:

  • UL, CE, RoHS/WEEE compliant, FCC Class A (conducted and radiated emissions)
Carton Contents:
  •  Locking IEC Cable, Quick Start Guide, USB Cable