Qsc PLD4.2 Owner's Manual

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EN
TD-000368-00-A
Introduction
Built for system integrators, the PLD series amplifiers provide multi-channel amplification with built-in DSP and enough power to drive wide varieties 
of speaker systems with optimal energy efficiency. The PLD Series consists of three light-weight, 2RU, four-channel amplifiers with on-board DSP and 
flexible channel combining. These amplifiers not only provide the power and processing to make your system perform better, they offer outstanding 
efficiency ensuring that energy costs are kept to a minimum over the life of the installation. 
PLD amplifiers feature Flexible Amplifier Summing Technology (FAST).  Depending on the model, 1600, 2500, or 5000 Watts of total power can be 
distributed across one to four outputs.  
The PLD Series amplifiers use QSC’s third-generation class-D power-amplifier design in combination with a custom power stage utilizing a new output 
device. In addition, PLD amplifiers employ the proven PowerLight power supply in conjunction with Power Factor Correction (PFC) which aligns the 
current waveform with the AC mains voltage waveform. PFC enables the PLD Series amplifiers to draw current from the wall in a more efficient and 
controlled manner resulting in very high power from a single standard AC breaker. Additionally, the PLD Series amplifiers offer multi-stage sleep 
modes saving energy when possible without sacrificing performance. The result is an exceptionally powerful and flexible platform that offers low 
weight and efficiency.
With four channels of amplification plus signal processing in just 2RUs, the PLD series replaces equipment taking up as much as three times 
the rack-space. 
A single PLD Series amplifier is a capable and sophisticated loudspeaker processor. Integration of processing and amplification means that the DSP 
knows exactly what the amplifier is doing so dynamics processing can be far more accurate and effective. This approach employs both RMS and Peak 
Limiters that allow the amplifier and loudspeaker to produce more output without being pushed to distortion or destruction. 
The on-board DSP offers four channels of crossover filters, 5-band parametric EQ/Low-shelf/High-shelf, alignment delay and dynamics processing 
— everything needed to optimize a loudspeaker system. Additionally when using QSC loudspeakers, PLD amplifiers provide Intrinsic Correction™, a 
combination of filtering, limiting and loudspeaker knowhow that was first developed for QSC's WideLine line-array loudspeakers. Intrinsic Correction 
compensates for the non-linearity in array and horn design resulting in exceptional performance.
The PLD also includes manufacturers' recommended tunings for the most popular passive loudspeakers. A system setup wizard helps you select the 
right preset, or select one of the 20 configuration templates and create tunings that you can save in the user preset library.
With a dedicated front panel user interface, complete with LED meters and indicators, a 400 x 240 TFT color display, a rotary encoder and navigation 
buttons, the PLD amplifiers provide an intuitive means to control the system. 
Unpacking
There are no special unpacking instructions. You may want to keep the shipping material for the unlikely event that the amplifier should need 
returning for service.
Package Contents
1.  Quick-Start Guide TD-000351-00
2.  Warning Information Sheet TD-000420-00
3. PLD Amplifier
4.  IEC AC Power Cord
5. USB Cable