QSC PLD4-5, PLD4-2, PLD4-3 Owner's Manual

PLD Amplifiers

User Manual

PLD4.2 — 4 Channel, 1600 W Amplifier

PLD4.3 — 4 Channel, 2500 W Amplifier

PLD4.5 — 4 Channel, 5000 W Amplifier

TD-000368-00-A

*TD-000368-00*

EXPLANATION OF SYMBOLS

The term “WARNING!” indicates instructions regarding personal safety. If the instructions are not followed the result may be bodily injury or death.
The term “CAUTION!” indicates instructions regarding possible damage to physical equipment. If these instructions are not followed, it may result in

damage to the equipment that may not be covered under the warranty.
The term “IMPORTANT!” indicates instructions or information that are vital to the successful completion of the procedure.
The term "NOTE" is used to indicate additional useful information.

The intent of the lightning flash with arrowhead symbol in a triangle is to alert the user to the presence of un-insulated "dangerous"
voltage within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to humans.

The intent of the exclamation point within an equilateral triangle is to alert the user to the presence of important safety, and operating
and maintenance instructions in this manual.

IMPORTANT SAFETY INSTRUCTIONS

WARNING!:

TO PREVENT FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.

EN EN

• Keep these instructions.

• Heed all warnings.

• Follow all instructions.

• Do not use this apparatus near water.

• Clean only with a dry cloth.

• Do not block any ventilation opening. Install in accordance with the manufacturer's instructions.

• Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.

• Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A

grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided
plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.

• Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from
the apparatus.

• Only use attachments/accessories specified by the manufacturer.

• Unplug this apparatus during lightning storms or when unused for long periods of time.

• Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply

cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture,
does not operate normally, or has been dropped.

• The appliance coupler, or the AC Mains plug, is the AC mains disconnect device and shall remain readily operable after installation.

• Adhere to all applicable, local codes.

• Consult a licensed, professional engineer when any doubt or questions arise regarding a physical equipment installation.

TD-000368-00-A

2

FCC Statement

NOTE:

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC
Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a
commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a
residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his
own expense.

RoHS STATEMENT

The QSC PLD4.2, PLD4.3 and PLD4.5 amplifiers are in compliance with European Directive 2002/95/EC – Restriction of Hazardous Substances (RoHS).

The QSC PLD4.2, PLD4.3 and PLD4.5 amplifiers are in compliance with “China RoHS” directives. The following chart is provided for product use in
China and its territories:

QSC PLD4.2, PLD4.3, and PLD4.5 Amplifiers

部件名称

(Part Name)

铅

(Pb)

电路板组件

(PCB Assemblies)

机壳装配件

(Chassis Assemblies)

O: 表明这些有毒或有害物质在部件使用的同类材料中的含量是在 SJ/T11363_2006 极限的要求之下。

X O O O O O

X O O O O O

汞

(Hg)

(Toxic or hazardous Substances and Elements)

有毒有害物质或元素

镉

(Cd)

六价铬

(Cr(vi))

多溴联苯

(PBB)

多溴二苯醚

(PBDE)

(O: Indicates that this toxic or hazardous substance contained in all of the homogeneous materials for this part is below the limit requirement
in SJ/T11363_2006.)

X: 表明这些有毒或有害物质在部件使用的同类材料中至少有一种含量是在 SJ/T11363_2006 极限的要求之上。
(X: Indicates that this toxic or hazardous substance contained in at least one of the homogeneous materials used for this part is above the
limit requirement in SJ/T11363_2006.)

3

TD-000368-00-A

Warranty (USA only; other countries, see your dealer or distributor)

QSC Audio Products 3 Year Limited Warranty

QSC Audio Products, LLC (”QSC”) guarantees its products to be free from defective material and/or workmanship and will replace defective parts
and repair malfunctioning products under this warranty when the defect occurs under normal installation and use, provided the unit is returned to
our factory, one of our authorized service stations or an authorized QSC International Distributor via pre-paid transportation with a copy of proof
of purchase (i.e., sales receipt). This warranty provides that the examination of the return product must indicate, in our judgment, a manufacturing
defect. This warranty does not extend to any product which has been subjected to misuse, neglect, accident, improper installation, or where the
date code has been removed or defaced. QSC shall not be liable for incidental and/or consequential damages. This warranty gives you specific legal
rights. This limited warranty is freely transferable during the term of the warranty period. The warranty on QSC products is NOT VALID if the products
have been purchased from an unauthorized dealer/online e-tailer, or if the original factory serial number has been removed, defaced, or replaced in
any way. Damage to, or loss of any software or data residing on the product is not covered. When providing repair or replacement service, QSC will
use reasonable efforts to reinstall the product’s original software configuration and subsequent update releases, but will not provide any recovery or
transfer of software or data contained on the serviced unit not originally included in the product.

Customers may have additional rights, which vary from state to state or from country to country. In the event that a provision of this limited warranty is
void, prohibited or superseded by local laws, the remaining provisions shall remain in effect.

The QSC limited warranty is valid for a period of three (3) years from date of purchase in the United States and many (but not all)
other countries.

EN EN

For QSC warranty information in countries other than the United States, contact your authorized QSC international distributor. A list of QSC
International distributors is available at www.qsc.com.

To register your QSC product online, go to www.qsc.com and select ”Product Registration”. Other questions regarding this warranty can be answered
by calling, e-mailing or contacting your authorized QSC distributor.

Phone: [phone] within US and Canada, [phone] international, Email: [e-mail], Website: www.qsc.com.

TD-000368-00-A

4

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

5

TD-000368-00-A

Features

1 2 4

5

7 8 109

6

3

Amplifier Front Panel

1

2
3

4
5
6
7
8
9

10

12

13
14

15

16

11

— Figure 1 —

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

2. Output Channel Mute Buttons and LEDs (Red)

EN EN

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

Amplifier Rear Panel

NOTE:

position of the fan and the connectors.

The PLD4.3, and PLD4.5 models have a different rear panel configuration than the PLD4.2 rear panel. The difference is the

USB

XLR

PIN 1

PARALLEL PARALLEL PARALLEL PARALLEL

1

PIN 2

PIN 3

ROUTABLE INPUTS

SPEAKER

WIRE

CLASS 2

EXCEPT

BRIDGE

MODES,

140V &
200V: USE

CLASS 3.

UTILISER

432

UN CABLE

CLASSE 2.

BRIDGE,
140V ET

200V:

UTILISER

UN CABLE

2 OHM MIN IMPEDANCE PER CHANNEL

BRIDGED MODES 4 OHM MIN IMPEDANCE

CLASSE 3.

OUTPUTS TO SPEAKERS

A

C

BRIDGED OUTPUTS

B

D

X

POWER

Y

ON

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)

TD-000368-00-A

— Figure 2 —

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

6

Amplifier Control

A

B

MUTE

SEL

MUTE

SEL

1

Off Mode

2

OUTPUT

LIM

-10

-20

CLIP

SIG

INPUT

MUTE

SEL

3

C

D

MUTE

SEL

4

— Figure 3 —

HOME

ENTER

EXIT

GAIN

MASTER
CONTROL

ENTER Button

ENTER

• Navigates into the menu structure

• Enters the edit mode for adjusting parameters

• Confirms the changes you make and exits edit mode.

EXIT Button

EXIT

• Navigates out of the menu structure and parameter selection.

• In the edit mode, pressing EXIT reverts the value back to its prior

state, and exits the edit mode.

HOME Button

HOME

• If you are on the Home screen, pressing HOME displays the alternate
Home screen. Pressing HOME again returns you to the primary
Home screen.

• If you are on a navigation screen, pressing HOME takes you to the
home screen.

• If you are on an edit screen, pressing HOME will confirm any value
being edited and take you to the Home screen.

• Rear power switch is off, the amplifier is not operable. The power
switch is the AC Mains disconnect.

• The power button is not illuminated.

• Turn the power switch to on. The amplifier enters the mode it was in

when power was removed. The power button is illuminated based on
the mode.

Run Mode

• From Standby or Mute All modes, press and release the power button
on the front panel.

• The power button is illuminated blue.

• The amplifier is fully operable; audio can pass.

Standby Mode

• From Mute All or Run modes, press and hold the power button on
the front panel for two to three seconds.

• The power button illuminates solid red.

• The front panel LCD is off.

• The amplifier is not operable; audio will not pass.

Mute All Mode

• From the Run Mode, quickly press and release the power button.

• The power button flashes red.

• The outputs are muted and amplifiers are off.

• The front panel and DSP functionality are fully operable. Any changes

you make are saved and take effect in the Run Mode.

GAIN Button

GAIN GAIN

• Pressing the GAIN button from any screen takes you to the output
gain screen for the most recently accessed output channel.

• Pressing GAIN again confirms the gain change and returns to the
screen you were on when you pressed GAIN.

• The Gain button illuminates green when selected.

SEL Buttons

SEL SEL

• Use these buttons to navigate between input channels or output
channels. For example, if you are adjusting output gain on channel A,
pressing the channel B SEL button takes you to the gain adjustment
for channel B.

• The SEL buttons are active only when the LCD screen is on an input
or output parameter adjustment screen.

• The SEL buttons illuminate blue for output channels, and amber for
input channels.

LIM LEDs

LIM

• Illuminates red when the Limiter is engaged.

-10 and -20 LEDs

-10 & -20

• Indicates the output level of the channel.

CLIP LEDs

CLIP

• Illuminates red when the input signal is being clipped.

SIG LEDs

SIG

Master Control Knob

• Scrolls up/down and right/left to select menu items and parameters

• Adjusts parameters

• Illuminates blue when a signal is present.

7

TD-000368-00-A

PLD Amplifier Signal Flow

Preset # and Configuration

Preset # and Configuration

(CW)

1

2

3

4

Input Settings Output Processing

Sensitivity

Sensitivity

Switch

Switch

Sensitivity

Sensitivity

Switch

Switch

Sensitivity

Switch

Sensitivity

Switch

A/D

A/D

A/D

A/D

Meter

Meter

Meter

Meter

Gain

Gain

Gain

Gain

Source

Select

Source

Select

Source

Select

Source

Select

Button

Actuated

Mute

Mute

Mute

Mute

High-

pass

Filter

High-

pass

Filter

High-

pass

Filter

High-

pass

Filter

Gain /

Polarity

Gain /

Polarity

Gain /

Polarity

Gain /

Polarity

Crossover

Low-

pass
Filter

Low-

pass
Filter

Low­pass

Filter

Low-

pass
Filter

5-Band

PEQ

5-Band

PEQ

5-Band

PEQ

5-Band

PEQ

Delay

Delay

Delay

Delay

RMS
Peak

Limiter

RMS
Peak

Limiter

RMS
Peak

Limiter

RMS
Peak

Limiter

D/A

D/A

D/A

D/A

Amp Config.

Meter

A

Meter

B

Meter

C

Meter

D

Set by

Preset or Wizzard

A

B

C

D

X

Y

— Figure 4 —

EN EN

Screen Types

Informational

F1: A B C D

Home (Press HOME for more information)

Location and breadcrumbs

Informational screens, like the HOME screen, are
designed to provide you with a good amount of
useful information at a glance.

Full

A - FR

+1.5 dB

Full

B - FR

+3.5 dB

Full

C - FR

+1.5 dB

Full

D - FR

+1.5 dB

Channel Configuration
and Gain

Navigational

Navigational screens provide the means to move
around and select menu items. Use the Master
Control knob, ENTER and EXIT buttons for navigation.
This is an example of one type of navigational screen,
there are others.

Parameter Editing

Parameter editing screens allow you to select, edit,
and confirm changes for various system parameters.
Use the ENTER button to edit and confirm changes
to parameters. Use the Master Control knob to select
parameter, and make adjustments. Use the EXIT
button to exit the edit mode without saving changes.

121 V 7.2 AAC Voltage: AC Current:

Amp Status:

OK

— Figure 5 —

F1: A B C D

Menu

PRESETS

Preset Recall and Save

INPUTS

— Figure 6 —

F1: A B C D

Gn/Pol

— Figure 7 —

Gain

-7.0 dB

Polarity

POL+

Output

A

20 dB

-60 dB

AC Voltage and Current

Amplifier Status

Location and breadcrumbs

Empty area indicates no
selections above (CCW).

Current Menu Selection

Next Menu selection below

Parameter being edited

Parameter not selected

Parameter selected

Gain

-7.0 dB

TD-000368-00-A

8

Menu Tree

Presets

Inputs

Outputs

Utilities

Preset Recall

Preset Save

Preset Wizard

*For QSC Line Arrays only

Input Sensitivity

Input Gain

Source Select

Processing

Crossover

PEQ

Delay

Limiter

Array Correction*

Load Speaker

Save Speaker

Status

Amp ID

Display

Lockout

Password

About Presets

The PLD amplifiers are preset driven. In order to get the most out of the amplifiers, an understanding of how presets work is essential. A Preset, in the
context of the PLD amplifiers, is a combination of amplifier configuration (inputs and outputs), DSP and loudspeaker assignments. When a preset is
recalled it can change the output routing and wiring and/or any of the DSP settings.

The PLD amplifiers come with 20 unchangeable factory presets, and 50 user-defined presets. The factory presets are designed to be starting points
for creating the presets you need for your particular installation. Factory presets F1: thru F9: have no DSP or loudspeaker assignments, only output
configurations. Factory presets F10: thru F20: include basic settings along with the output configurations.

Creating User-defined Presets

A preset can be created in two ways, the first is to modify an existing preset, then save this as a new preset. The second is to use the Preset Wizard to
create a Preset from scratch.

Save As a New Preset

After selecting a starting preset, navigate through the Input and Output menus to select and modify the parameters needed for your system. After
modifying the parameters for each channel, return to the Preset menu and save your work. If you started with a user-defined preset, you can update
the preset you started with using the SAVE function or, you can use the SAVE AS function.

Preset Wizard

The Preset Wizard simplifies the preset creation process, and allows you to create a preset from the ground up. The Preset Wizard provides a
mechanism for you to select the desired power and load. Based on these selections, the best amplifier configuration is selected and you are then
allowed to select and assign loudspeakers to each output.

NOTE:

"overwrites" some existing preset. The main difference is the SAVE function overwrites only the preset number you started with, and the
SAVE AS function allows you to save to a different user preset number and change the name.

By default, all 50 of the user-defined presets are configured the same as factory preset F1. Either method described above

9

TD-000368-00-A

Installation

The following steps are written in the recommended installation order.

Mount the PLD Amplifier

The PLD Series amplifiers are designed to be mounted in a standard rack-mount
unit. The amplifiers are 2RU high, the PLD4.3 and 4.5 are 381 mm (15 in) deep, the
PLD4.2 is 229 mm (9 in) deep.

Depending on the depth of your rack, the Rear Rack Ear Support kit (FG-000031-00)
may be required for rack mounting. Refer to http://qsc.com/products/ under
Accessories for details.

CAUTION!:

ventilation openings, and that each side has a minimum of
2 cm clearance.

1. Use the proper fastening hardware (not included) to secure the amplifier in the rack. The PLD4.3 and PLD4.5 have four front and four rear
mounting tabs. The PLD4.2 has four front mounting tabs.

Be sure that nothing is blocking the front or rear

— Figure 8 —

EN EN

AC Mains

WARNING!:

dangerous voltage at the output terminals on the rear of the amplifier. Use
caution not to touch these contacts. Turn off the AC Mains disconnect switch
prior to making any connections.

The PLD amplifiers have a Universal power supply 100 – 240 VAC, 50 – 60 Hz, with an IEC
locking connector.

1. Connect the IEC AC power cord to the rear AC inlet and the AC source.

AC Power

NOTE:

If the amplifier has no audio for fifteen minutes, the amplifier stops switching. The amplifier returns to the Run mode the instant
audio is present.”

When you remove power from the amplifier, then re-apply the power, the amplifier returns to its last state.

When the AC Power is on, there is a potential of having

— Figure 9 —

TD-000368-00-A

10

Inputs

F1: A B C D

High-Frequency

Connect the Audio Inputs

Balanced

Inputs

Ground

Positive

Negative

1
2
3

— Figure 10 — — Figure 11 —

1

2

3

Unbalanced

Inputs

Ground

Positive

— Figure 12 —

1+3

2

2

1

3

There are four female XLR connectors labeled 1 through 4 that provide the audio inputs to the PLD amplifiers. A single input can be routed to one
or a combination of outputs. You can use from one to four of the inputs. The inputs are 10 kΩ balanced or unbalanced, with a selectable sensitivity
of either +4 or +14 dBu. There are four male XLR connectors in parallel with the four female connectors. The male XLRs are for daisy chaining to the
inputs of other amplifiers.

1. Make sure your audio source devices are powered off.

2. Connect the input source XLRs to the four female XLRs. (Figure 10)

NOTE:

The PLD Series has the capability of routing the inputs to different outputs. Be sure that the connections you make here match

the configuration of the amplifier.

USB (Optional)

The USB cable (supplied) connects to a Mac or PC for use with the Amplifier Navigator software. You can update the amplifier firmware, save and
deploy configuration files, and more. Refer to the Amplifier Navigator online help for details.

Outputs

The PLD amplifiers have four configurable outputs. You can set the power, combine outputs (bridged and parallel), and adjust the DSP for each
output. When the output configuration of the amplifier changes, the output connections, controlled by relays, change accordingly. Use the diagrams
shown in Figure 14 thru Figure 22 as a reference for wiring the loudspeakers.

Select the Output Configuration

The first step is to select a Preset based on the loudspeakers being connected to the amplifier. You can use a factory preset, and then adjust the
parameters as needed, then save the configuration as a user-defined preset. In addition, you can use the "Power Distribution Charts" on page 15
to create presets from the ground up. When the configuration is changed, all four channels are automatically muted.

F7: ABC D

1

ABC

Current Configuration

Selected Configuration

Input number

4

D

Frequency Range color

Output Configuration

Input number

Sub-woofer

Low-Frequency

Frequency Range Color Codes

Mid-Frequency

Full Range

— Figure 13 —

11

TD-000368-00-A

WARNING!:

ABCD Parallel

AB in Parallel

When the AC Power is on, there is a potential of having dangerous voltage at the output terminals on the rear of

the amplifier. Use caution not to touch these contacts. Turn off the AC Mains disconnect switch prior to making any connections.

IMPORTANT:

QSC recommends that you connect jumpers where the terminals are the same points electrically. Refer to Figure 14

thru Figure 22.

1. Turn the AC Mains power switch to on. The amplifier starts in the Run mode, or the last mode it was in before power was turned off.

2. Press and release the front-panel power button. The button flashes red, the amplifier is in Mute All mode.

3. Select the configuration appropriate for your loudspeakers, using either Preset Recall, or the Preset Wizard.

The following is a list of configurations for 1-, 2-, 3-, and 4-channel outputs. This is not an exhaustive list, but is intended to give you an idea of what is
available and how the outputs would be wired.

One-Channel Configurations

F9: ABCD

F9: ABCD

1

EN EN

ABCD

= Subwoofer

The following are electricall y
the same point
A. B, C, and D, (1+)
A, B, C, and D, (1-)

1+

1-

1+

1-

— Figure 14 —

1+

A

C

B

1-

1+

D

1-

You can use any, or all of the
connectors A, B, C, and/or D.

X

Y

F8: AB+CD

F8: AB+CD

1

AB+CD

Two-Channel Configurations

F6: A+B C+D

F6: A+B C+D

1

A+B

3

C+D

Bridged with
CD in Parallel

= Subwoofer

— Figure 15 —

A+B Bridged
C+D Bridged

= Subwoofer

The following are electricall y
the same point
X (2+) and Y (1+)
X (2-) and Y (1-)

— Figure 16 —

B XA

C D Y

A B X

C D Y

Optional

1+

1-

1+1-2+

2-

1+

1-

TD-000368-00-A

12

F5: AB C+D

AB Parallel

C (1-) and D (1-)

ABC Parallel

A (1-), B (1-), and C (1-)

F5: AB C+D

1

AB

3

C+D

AB Parallel
C+D Bridged

= Subwoofer

= Mid Range

The following are electricall y
the same point
A (1+) and B (1+)
A (1-) and B (1-)
X (2+) and Y (1+)
X (2-) and Y (1-)

— Figure 17 —

1+

1-

1+

A B X

1-

C D Y

Optional

2+

2-

1+

1-

F4: AB CD

F4: AB CD

1

AB

F7: ABC D

F7: ABC D

1

ABC

1+

CD Parallel

= Subwoofer

= Mid Range

3

CD

The following are electricall y
the same point
A (1+) and B (1+)
A (1-) and B (1-)

C (1+) and D (1+)

1-

1-

1+

Optional

1+

A

C

1+

B

1-

1-

D

X

Y

— Figure 18 —

1+

D Single

= Subwoofer

4

D

= High Range

The following are electricall y
the same point
A (1+), B (1+), and C (1+)

1-

1+

1-

Optional

1+

A B X

C D Y

1-

1+

1-

— Figure 19 —

Three-Channel Configurations

F3: Config - A+B C D

F3: Config - A+B C D

1

A+B

3

4

C

A+B Bridged
C Single

A B X

1+

1-

D Single

= Subwoofer

D

= Mid Range

= High Range

1+

1-

1+

C D Y

1-

— Figure 20 —

13

TD-000368-00-A

F2: AB C D

A Single

F2: AB C D

1

AB

Four-Channel Configuration

AB Parallel
C Single
D Single

= Subwoofer

3

4

C

D

= Full Range

The following are electricall y
the same point
A (1+) and B (1+)
A (1-) and B (1-)

1+

1-

1+

1-

Optional

1+

A

B X

1-

1+

D YC

1-

— Figure 21 —

F1: A B C D

F1: A B C D

B Single
C Single

1+

1-

1+

A

B X

1-

D Single

1 2

EN EN

A B

3

4

C

D

= Full Range

1+

1-

1+

C

D Y

1-

— Figure 22 —

Connect the Loudspeakers

WARNING!:

terminals on the rear of the amplifier. Use caution not to touch these contacts. Turn off the AC Mains
disconnect switch prior to making any connections.

1. Turn the AC Mains power switch on the back of the amplifier to OFF.

2. Connect the loudspeaker wiring to male NL4 connectors (Figure 23) as needed for your amplifier's configuration.
Refer to Figure 14 thru Figure 22 for wiring diagrams. When combining channels, QSC recommends that you connect
jumpers between output terminals that are the same points electrically. Refer to Figure 14 for details.

When the AC Power is on, there is a potential of having dangerous voltage at the output

2-

1+

2+

1-

Male NL4 Wiring

— Figure 23 —

3. Connect the male NL4 connectors to the female NL4 connectors, on the rear of the amplifier, according to your amplifier's configuration.

The following table shows you which pins on which NL4 you can use for each mode. Where there is more than one connector for a given mode, the
PLD allows you to use one, all or some of the available connectors. For example, in ABCD Parallel mode, you can use pins 1+ and 1- of NL4 (A, B, C,
and D), (A, or B, or C, or D), or (A and B), and so on; the pins are all in parallel and electrically the same point. It is recommended that where the pins
are electrically the same, you use all available pins whether by jumpers between pins, or direct wiring to each loudspeaker

TD-000368-00-A

14

Mode

NL4 Separate AB Parallel ABC Parallel ABCD Parallel

A

B

Ch A 1+ / 1-

Ch B 2+ / 2-

1

1+ / 1- 1+ / 1- 1+ / 1- 1+ / 1-

1+ / 1- 1+ / 1- 1+ / 1-

CD Parallel

C

D

Ch C 1+ / 1-

Ch D 2+ / 2-

1

1+ / 1- 1+ / 1- 1+ / 1-

1+ / 1- 1+ / 1- 1+ / 1-

A+B Bridged C+D Bridged AB+CD Bridged

1+ / 1-

1

1+ / 1-

X

1+ / 1- 2+ / 2-

Y

— Table 1 —

1 For Bi-Amp operation.

Output Connectors

Standard Bridged

A

C

B

D

— Figure 24 —

X

Y

AC Power On

After connecting the outputs to the loudspeakers, you may turn the amplifier on.

1. Make sure the output gain settings for all audio-source devices (CD Players, Mixers, Instruments, etc.) at the lowest output (max attenuation).

2. Turn on all audio sources.

3. Turn the AC Mains power switch on the back of the amplifier to ON. The amplifier starts in the state it was in when power was removed.

4. You can now bring up the outputs of your audio sources.

Power Distribution Charts

The following charts show the maximum power output for each channel in each configuration, and under different loads.

PLD 4.3 — Total Power: 2500W

8Ω Load 4Ω Load 2Ω Load

Configuration

4 CH (A B C D) 625 625 625 625 650 650 650 650 600 600 600 600
3 CH (AB C D) 1000 625 625 1200 650 650 1200 600 600
3 CH (A+B C D) 125 0 625 625 1150 650 650 625 600 600
2 CH (AB CD) 1000 1000 1200 1200 1200 1200
2 CH (AB C+D) 1000 125 0 1200 1150 1200 625
2 CH (A+B C+D) 1250 1250 1150 115 0 625 625
2 CH Alt (ABC D) 1100 625 2000 650 2500 600
1 CH (ABCD) 1100 2100 2500
1 CH (AB+CD) 2500 2370 2230

A B C D A B C D A B C D

— Table 2 —

15

TD-000368-00-A

Configuration

output channels

Possible Output Mode Combinations using the Preset Wizard

4 CH (A B C D) 1150 115 0 1150 1150 125 0 125 0 125 0 125 0 625 625 625 625
3 CH (AB C D) 1200 1150 1150 2250 125 0 125 0 2100 625 625
3 CH (A+B C D) 2250 1150 1150 1150 125 0 125 0 625 625 625
2 CH (AB CD) 1200 1200 2250 2250 2100 210 0
2 CH (AB C+D) 1200 2250 2250 115 0 2100 625
2 CH (A+B C+D) 2250 2250 1150 1150 625 625
2 CH Alt (ABC D) 115 0 115 0 2400 125 0 4100 625
1 CH (ABCD) 115 0 2300 4200
1 CH (AB+CD) 4200 4250 2250

Preset Wizard

PLD 4.5 — Total Power: 5000W

8Ω Load 4Ω Load 2Ω Load

A B C D A B C D A B C D

— Table 3 —

EN EN

NOTE:

The power levels shown in this procedure are taken from the PLD4.3 unless indicated otherwise. PLD4.2 will show less power

and PLD4.5 will show greater power.

HOME > PRESETS > PRESET WIZARD > ENTER

Step 1 —

Adjust Impedance and Power

OUTPUTS SPEAKERS SAVE

Output:

Imped:

Power:

Remaining Power Available: 1875 W

Enter Load Profile (Impedance and Power)

*

A B C D

8.0 - - - - - -

625 - - - - - -

B

A

- - -

25%

- - -

25%

C

- - -

25%

D

- - -

25%

AB

- - -

50%

- - -

25%

Adjust Impedance based on
the total loudspeaker load
connected to the channel.

Default = 8 Ω

Default = min. for amp

Scroll to select (Imped or Power)

To edit, press

Turn to adjust parameter

To confirm, press

ENTER

ENTER

Impedance and Power
are dynamically linked

Repeat for remaining

for adjustments.

D

C

- - -

25%

AB

- - -

50%

CD

- - -

50%

A+B

- - -

50%

C

- - -

25%

D

- - -

25%

A+B

- - -

50%

C+D

- - -

50%

ABC

- - -

75%

D

- - -

25%

AB + CD

- - -

100%

ABCD

- - -

100%

Modes: A B = Separate Channels / A+B = Bridge Mode / AB = Parallel Mode

* Precentages are used to represent the power for different amplifier models.

TD-000368-00-A

— Figure 25 —

16

Step 2 —

OUTPUTS SPEAKERS S AV E

Assign

AssignAssign

Output:

A DCB

Imped:

8.0 8.08.08.0

Spkr:

- - - - - - - -- - - -- - - -

Assign

Power:

625 625625625

Loudspeaker assignment is optional,
you can assign a loudspeaker to one
or more channels, or none at all.

When you are finished setting
the Impedance and Power for
each output, continue to scroll
to access the SPEAKERS tab.

To Assign a loudspeaker, press

Continue to Step 3.

Scroll to select Output channel

ENTER

OUTPUTS SPEAKERS SAV E

Output:

A

ASSIGN

2-Way LF

Speaker:

80 Hz

Band:

WL2102 BiLFNS

Filter:

Scroll to select a Speaker model

To edit Speaker, press

ENTER

Scroll to select (Band, Filter)

To confirm, press

ENTER

Turn to adjust parameter

ENTER

To edit, press

To confirm, press

ENTER

Band and Filter
selections are based on
the Speaker you select.
You must select a
loudspeaker before
selecting Band and Filter.

Scroll to select ASSIGN

ENTER

To assign the speaker to the output channel, press

Edit preset number or press EXIT

User Preset Number:

21

SAVE

New Preset Name

C o n f i g - A

OUTPUTS SPEAKERS SAV E

Scroll to the Save screen

To edit User Preset number, press

ENTER

When you have finished
selecting loudspeakers,
continue to scroll to
access the SAVE tab.

Turn to adjust parameter

To confirm, press

ENTER

Select Output Channel for Speaker Assignment

Step 3 —

Step 4 —

Select Speaker Type for Channel

Select User Preset Number

Step 5 —

Assign New User Preset Name

OUTPUTS SPEAKERS SAVE

M y P r e s

Edit preset number or press EXIT

User Preset Number:

New Preset Name

SAVE

Scroll to New Preset Name press

Scroll to desired letter position press

Turn to select desired character press

When finished, scroll to SAVE press

21

Indicates editing

Indicates “New
Preset Name”
selection

Up to 21 characters
A - Z / a - z / 0 - 9 /
_ / - / space

17

ENTER

ENTER

ENTER

ENTER

TD-000368-00-A

Create New Preset from an Existing Preset

1

A

2

B

3

C

4

D

F1: Config - A B C D

F1: Config - A B C D

Indicates more Presets

Input Sub MF FullHFLF

Scroll to desired Preset

20 Factory, 50 User-defined

To create a preset from an existing preset, recall the preset with the desired output configuration, modify the Input parameters, Output parameters,
then save the preset. In addition, you can save the preset as you are going thru the creation process.

Recall a Preset

A Preset includes the output configuration, input parameters, and loudspeaker profiles (DSP, load, and assignments). There are 20 factory presets that
can be recalled, but not overwritten.

• Factory presets F1: thru F9: contain output configurations only.

• Factory presets F10: thru F20: contain the output configurations and basic DSP for the configurations.

• There are 50 user presets that can be recalled and overwritten.

HOME > PRESETS > PRESET RECALL > ENTER

Step 1 —

Select Preset

EN EN

Step 2 —

Confirm Selection

F1: A B C D

F18: Triamp - A+B C D

1

A+B

Press ENTER to confirm selection

To select the Preset conguration, press

To conrm the selection, press

3

4

C

D

ENTER

ENTER

The message at the bottom changes to: “Recalling Preset now...”
You may hear relays clicking

TD-000368-00-A

18

Set up the Inputs

Press ENTER to confirm

Press ENTER to confirm

Press ENTER to confirm

NOTE:

Changes made to input levels are in real time.

HOME > INPUTS > INPUT SENS > ENTER

Step 1 —

Select Input Sensitivity

F1: A B C D

Inputs > Input Sens

INPUT SENS

HOME > INPUTS > INPUT GAIN > ENTER

Step 2 —

Set Input Gain

F1: A B C D

Inputs > Input Gain

INPUT GAIN

+14 dBu

-11.8 dB

Input

1

Input

1

Scroll to select (+14 or +4 dBu)

(The background turns to green.)

To confirm selection, press

To move to the next input, press

Repeat procedure for

remaining input channels.

Scroll to select (-100 thru 20 dB)

(0.1 dB increments)

To confirm selection, press

To move to the next input, press

ENTER

SEL

ENTER

SEL

Set up the Outputs

NOTE:

Source Select

The PLD amplifiers are equipped with an internal router that allows you to select the input sources
for each of the four output channels.

• The default setting is Input 1 to Output A, 2 to B, 3 to C, and 4 to D.

• Table 4 gives the possible input routings for a single output channel.

When you combine inputs, the input audio is summed equally to the output.

HOME > OUTPUTS > SOURCE SEL > ENTER

Step 1 —

Select Input Source for each output channel

Changes made to outputs are in real time.

F1: A B C D

Outputs > Source Select

SOURCE SEL

Input Select

Input:

CH: 1

Output

A

Repeat procedure for

remaining input channels.

Input Routings

1 1+2 2 2+3 3 3+4 4

— Table 4 —

Scroll to select Input combination

(1), (1+2), (2), (2+3), (3), (3+4), or (4)

To confirm selection, press

To move to the next output, press

Repeat procedure for

remaining input channels.

ENTER

SEL

19

TD-000368-00-A

Loudspeaker Processing

The Speaker Processing section allows you to make adjustments to the Crossover, EQ, Delay, Limiter, and QSC Array details for each output channel.
In addition, you can load a pre-defined loudspeaker then make any adjustments needed, and save the changes as a user-defined loudspeaker.
Depending on the loudspeaker selection, various parameters are not available for adjustment. When you make adjustments, you are making them in
real time. If audio is passed while making changes, it is affected by the change.

The following instructions are not all in menu order, and all are optional. Repeat the following procedure for each output channel as necessary.

Load Speaker Profile

HOME > OUTPUTS > SPKR PROC > LOAD SPKR > ENTER

A loudspeaker profile includes all the DSP and loudspeaker characteristics available in the SPKR PROC section. When you LOAD a loudspeaker, you
are loading all of the DSP and characteristics of that loudspeaker. You can start by loading a loudspeaker and then make modifications and save your
new profile, or you can build the profile without loading a loudspeaker, and then save it as a new profile. If you load a QSC loudspeaker, the amplifier
is set for that specific loudspeaker and some parameters may be locked out because they are set to their optimal value by the Intrinsic Correction
Calculator, and should not be adjusted. The PLD supports a number of loudspeakers from other manufacturers. Refer to the list under "Included

Loudspeaker Profiles" on page 26. There may be additions to this list in the futrue that can be loaded with firmware updates.

NOTE:

EN EN

Step 1 —

you made are overwritten.

Load an Existing Loudspeaker for the Selected Output

If you make changes to any of the loudspeaker processing parameters, and then LOAD a loudspeaker profile, all the changes

ABOUT SPEAKERS LOAD

A

Speaker:

Band:

Filter:

Output:

WL2102 BiLFNS

2-Way LF

80 Hz

CONFIRM

Band and Filter
selections are
displayed and
constrained based
on the loudspeaker.

Scroll to select Speaker model

To edit Speaker, press

To confirm, press

Scroll to (Band, Filter)

To adjust, press

Adjust selected parameter

To confirm, press

ENTER

ENTER

ENTER

ENTER

Scroll to LOAD

To Load the speaker profile to the selected output, press

ENTER

Crossover

HOME > OUTPUTS > SPKR PROC > CROSSOVER > HIGH-PASS (OR LOW-PASS) > FREQ > ENTER

Step 1 —

Set the Crossover High- and/or Low-pass filters

TD-000368-00-A

F1: A B C D

HPF

Freq

70.0

Type

BWrth

Output

A

20 dB

-60 dB

Slope

24dB/oct

Freq: 20 - 20 kHz

Type:

• Butterworth

• Linkwitz-Riley,

• Bessel-Thomson

Slope:
6dB to 48dB/oct
depending on Type

20

Scroll to select (Freq, Type, Slope)

To edit, press

Turn to adjust parameter

To confirm, press

To exit, press

ENTER

ENTER

EXIT

HOME > OUTPUTS > SPKR PROC > CROSSOVER > GAIN/POL > GAIN > ENTER

Step 2 —

Set the Crossover Gain and Polarity

F1: A B C D

Gn/Pol

Gain

-5.5 dB

Polarity

POL +

Output

A

20 dB

-60 dB

+
Gain -100 to +20 dB
–

Polarity + or -

Parametric EQ

HOME > OUTPUTS > SPKR PROC > PEQ > BAND 1, 2, 3, 4, OR 5 > BAND BYPASS > ENTER

The graph is a composite of all five bands. Each band has a full range of 20 Hz to 20 kHz.

Step 1 —

Set the Crossover EQ

F1: A B C D

Band 1

Type

Parametrc

Gain

-35 dB

Output

-60 dB

Freq

100BW.01

Type: Bypass, Parametric, Low Shelf,
High Shelf (Default Bypass)

A

20 dB

Gain: -40 to +20 dB (Default 0.00)

Freq: 20 to 20kHz (Band 1 Def 100 Hz)
(Band 2 Def 500 Hz)
(Band 3 Def 1 kHz)
(Band 4 Def 2.5 kHz)
(Band 5 Def 5 kHz)

BW: 0.01 to 3.00 Octive
(Default 1.00 Oct.)

Scroll to select (Gain or Polarity)

To edit, press

Turn to adjust parameter

To confirm, press

To exit, press

Scroll to select

(Type, Gain, Freq, BW)

To edit, press

Turn to adjust parameter

To confirm, press

To exit, press

ENTER

ENTER

EXIT

ENTER

ENTER

EXIT

Delay

HOME > OUTPUTS > SPKR PROC > DELAY > DELAY TIME > ENTER

Step 1 —

Set the Output Delay Time

F1: A B C D

Outputs > Spkr Proc > Delay

DELAY TIME

Output

A

14.0 ms

Bypassed

Press ENTER to confirm

Delay:

0.0 ms to

50.00 ms

1.0 ms increments

Bypass:
Bypassed or
Enabled

Scroll to (Delay Time or Bypass)

To edit, press

Turn to adjust parameter

To confirm, press

To exit, press

ENTER

ENTER

EXIT

21

TD-000368-00-A

Limiter

Scroll to select (RMSThr, PkThr,

HOME > OUTPUTS > SPKR PROC > LIMITER > ENTER

Step 1 —

Set the Limiter Mode

F1: A B C D

Output

A

To edit the Limiter mode, press

ENTER

Turn to select the mode for the Limiter

AUTO

Type
Med

SpkrPwr

200W

SpkrImp

8.0

AUTO

ADV

To confirm setting, press

OFF

ENTER

HOME > OUTPUTS > SPKR PROC > LIMITER > AUTO

NOTE:

SpkrPwr maximum output depends on the amplifier and the output configuration you select. The maximum for separate

channels is 1250 W, a single combined channel (ABCD or AB+CD) can be up to 5000 W depending on the amplifier.

EN EN

Step 2 —

Set the AUTO Mode Parameters

F1: A B C D

AUTO

Type
Med

SpkrPwr

200W

Output

A

SpkrImp

8.0

Type:
Aggressive
Medium
Mild

SpkrPwr:

10.0 W to 1250 KW

SpkrImpd:

2.0 Ω to 32.0 Ω

Scroll to select (Type, SpkrPwr, SpkrImp)

To edit, press

Turn to adjust parameter

To confirm, press

To exit, press

ENTER

ENTER

EXIT

Type

- the Auto Limiter Type is a protection level and its values are, Mild, Medium and Aggressive. This Type parameter, along with the Power Rating
and Impedance drive an algorithm designed to maximize the performance of your loudspeakers. They set the RMS and Peak threshold values as well
as their attack and release setting.

SpkrPwr

- if a single speaker is being driven, the SpkrPwr should be the continuous power rating of that loudspeaker. If multiple speakers are being

driven this value should be the combined power rating for the load.

SpkrImp

- if a single speaker is being driven, the SpkrImp should be the nominal impedance of that loudspeaker. If multiple speakers are being

driven this value should be the combined impedance for the load.

HOME > OUTPUTS > SPKR PROC > LIMITER > ADV

Step 3 —

Set the ADV Mode Parameters

F1: A B C D

ADV

RMSThr

100.0V

PkThr

155.0V

Output

RMSThr: 3.0V to 100.0V

A

PkThr: 5.0V to 155.0V

PkAttk: 0.10 ms to 20.0 ms

PkRel: 1.00 ms to 1.0 s

RMSAttk: 0.05 s to 10.0 s

RMSRel: 1.0 s to 60.0 s

Thr = Threshold, Pk = Peak, Attk = Attack, Rel = Release

PkAttk, PkRel, RMSAttk, & RMSRel)

To edit, press

Turn to adjust parameter

To confirm, press

To exit, press

ENTER

ENTER

EXIT

TD-000368-00-A

22

Array Correction

Scroll to select (Band,

NOTE:

You must have a QSC line array loaded in order to access the Array Correction parameters.

HOME > OUTPUTS > SPKR PROC > ARRAY > ENTER

Step 1 —

Set Splay Angle and Number of Boxes in the Array

F1: A B C D

AC

Splay Angle: Total cumlative
angle of the array.

Array Length: Total number of
boxes in the array.

Angle

15.0

Output

A

Boxes #

4

Angle:

0.0˚ to 90.0˚

Boxes #:
0 to 20

Scroll to select (Angle or Boxes#)

To edit, press

Turn to adjust parameter

To confirm, press

To exit, press

ENTER

ENTER

EXIT

Save a Loudspeaker

HOME > OUTPUTS > SPKR PROC > SAVE SPKR > ENTER

When you Save a speaker profile, you are saving all of the output settings currently active for the channel. The new profile you save does not need to
be Loaded, it is already active.

Step 1 —

Save a Loudspeaker with Custom Load Profile

Step 2 —

ABOUT SPEAKERS SAV E

Output Data:

Band: 2-Way LF

Power Rating:

Enter Speaker Info

AB + CD

Name the Loudspeaker Profile

SPEAKERSABOUT

Speaker Profile Name

M y S p k r

SAVE

Press ENTER to edit name

16.0Nominal Imped:

1000

SAV E

Nominal Impedance and
Power Rating are the nominal
settings for a single loudspeaker
of this type.

After confirming settings, Scroll to SAVE

Indicates editing

Indicates “Speaker
Profile Name”
is selected

Up to 21 characters
A - Z / a - z / 0 - 9 /
_ / - / space

Scroll to desired letter position press

Turn to select desired character press

When finished, scroll to SAVE press

Nominal Imped, Power Rating)

To edit, press

Turn to adjust parameter

To confirm, press

To add Speaker Profile Name, press

ENTER

ENTER

ENTER

ENTER

ENTER

ENTER

23

TD-000368-00-A

Save the Preset

Edit preset number or press EXIT

U1: A B C D

User Preset Number:

21

SAVE

New Preset Name

C o n f i g - A

Turn to select desired number (1 thru 50)

To confirm User Preset Number, press

ENTER

To edit User Preset number, press

ENTER

Press ENTER to edit preset name

U1: A B C D

User Preset Number:

21

SAVE

New Preset Name

C o n f i g X A

Scroll to New Preset Name

press

ENTER

Scroll to desired letter position

press

ENTER

Turn to select desired character

press

ENTER

Up to 21 characters
A - Z / a - z / 0 - 9 /
_ / - / space

Indicates “New
Preset Name”
is selected

Indicates editing

Press ENTER to save preset

U1: A B C D

User Preset Number:

21

SAVE

New Preset Name

C o n f i g X A

Press

ENTER

When you are finished naming, press

EXIT

Scroll to SAVE

SAVE

To confirm Save, press

ENTER

Press ENTER to save preset

U1: A B C D

SAVE

To save, press

To exit without saving, press

EXIT

ENTER

To confirm the save, press

ENTER

After modifying the Inputs and Outputs for all channels, save the current settings as one of the 50 user-defined presets (U1: thru U50:). Each of the
user presets, by default, is the same as factory preset F1: Config A B C D, so when you save the preset you are "overwriting" the preset currently in
that numbered position. If you started by recalling a factory preset, you must use the SAVE AS feature. If you started with a user-defined preset, you
can overwrite the preset you started with using the SAVE feature, or use the SAVE AS feature to overwrite a different user preset.

HOME > PRESETS > PRESET > SAVE> SAVE AS > ENTER

Step 1 —

Save a New Preset - Select and Edit Preset Number

Step 2 —

Name the Preset

EN EN

Step 3 —

HOME > PRESETS > PRESET SAVE > SAVE > ENTER

Use this procedure when you are saving the preset by overwriting the currently active user preset. After you use the SAVE AS feature to save the preset
you are working on, it then becomes the currently active preset, and you can use the SAVE feature to save periodically as you work on the preset.

Step 1 —

Save the Preset

Overwrite Preset

TD-000368-00-A

24

Utilities

With “Enter Password:” selected, press

HOME > UTILITIES > STATUS > ENTER

Step 1 —

Check the amplifier's health

UTILITY - STATUS

Amp Total Run Time: 22:37:48 Hrs

Hardware: V12

Firmware: V1.0.22

DC Status: OK

VRail 1: 148V

VRail 2: -150V

HOME > UTILITIES > AMP ID > ENTER

Step 2 —

Name the Amplifier

UTILITY - AMP ID

Serial #: 123abc Amp ID: my amp ID

Change Amp ID to:

m y a m p I D

CONFIRM

HOME > UTILITIES > PASSWORD > ENTER

The default password for all amplifiers is

QSC

A — Z a — z 0 — 9 _ - space

Step 1 —

Add or change the Password

UTILITY - CHANGE PASSWORD

Current Password:

Q S C

New Password:

M Y p a s w os r

CONFIRM

Temperature (PLD 4.3 & 4.5)
Thermal Limiting starts at 69ºC
Thermal Shutdown at 80ºC

Temperature:

CH1 & CH3: 27C

CH2 & CH3: 29C

Power Supply: 24C

Amp Total Run Time:
HH:MM:SS

Hardware version

Firmware version
update thru Amplifier Navigator

DC Status:
VRail 1 = +147VDC +/- 5V typical
VRail 2 = -147VDC +/- 5V typical

To edit “Change Amp ID to:”, press

Indicates editing

Indicates “New
Preset Name”
is selected

Up to 21 characters
A - Z / a - z / 0 - 9 /
_ / - / space

Scroll to desired letter position

Turn to select desired character

When you are finished, press

Scroll to CONFIRM

- all uppercase. The password is case sensitive, can be up to 10 characters long, and contain,

To enter “Current Password:”, press

With the first letter position selected, press

Turn to select desired character

When you complete the current password,

the “New Password:” is automatically selected

Repeat the procedure for the “New Password:”

Scroll to CONFIRM

press

press

Press

press

ENTER

ENTER

ENTER

EXIT

ENTER

ENTER

ENTER

ENTER

Press

ENTER

HOME > UTILITIES > LOCKOUT > ENTER

All controls are locked except the Mute buttons, the front-panel and rear power buttons, the Enter button and Master Control knob to unlock the amplifier.

Step 2 —

Enter Password to lock or unlock

UTILITY - LOCKOUT

Enter Password:

m y p a s w os r

CONFIRM

With the first letter position selected

Scroll to desired character

When you complete the password correctly,

press

press

ENTER

ENTER

ENTER

CONFIRM is automatically selected.

ENTER

25

To lock or unlock the amplifier, press

TD-000368-00-A

Included Loudspeaker Profiles

QSC Audio

AP-5102
AP-5122
AP-5122m FOH
AP-5122m MON
AP-5152
GP118-sw
GP212-sw
GP218-sw
S8T
S10T
S12

EN EN

WL118-sw
WL-2102
WL212-sw
WL218-sw

B52

LX1515V3
LX18V3
MX1515
MX18S

Cerwin-Vega (CV)

EL-36C
TS-42

EV

JBL

ELX112
ELX115
ELX215
TX2152
TX2181

JRX112M
JR X115
JR X118S
JRX125
MRX515
MRX518S
MRX525
MRX528S
PRX415M
PRX425
SRX712M
SRX715
SRX718S
SRX722
SRX725
SRX728S
SRX738
VRX932LA

Peavey

PR10
PR12
PR15
PV115
PV118
PV12M
PV215
PVX12
PVX15
SP218
SP4

Yamaha

BR12
BR12M
BR15
C115V
S115V
S215V
SM15V
SW218V

TD-000368-00-A

26

Specifications

PLD4.2 PLD4.3 PLD4.5

4 Ch. Continuous

2 Ch. Continuous

1 Ch. Continuous

Typical Distortion

Maximum Distortion

Frequency response (8Ω) 20 Hz - 15 kHz +/- 0.2 dB

Noise

1

8Ω
4Ω
2Ω

1

8Ω
4Ω
2Ω

1

8Ω
4Ω
2Ω
1Ω

8Ω
4Ω

4Ω - 8Ω 1.0% 1.0% 1.0%

Unweighted Output Unmuted
Weighted Output Muted

400 Watts
400 Watts
325 Watts

800 Watts
800 Watts
650 Watts

1600 Watts
1600 Watts
1600 Watts
1600 Watts

0.01 - 0.03%

0.03 - 0.06%

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

-101 dB

-109 dB

625 Watts
625 Watts
625 Watts

1250 Watts
1200 Watts
1200 Watts

2500 Watts
2500 Watts
2500 Watts
2500 Watts

0.01 - 0.03%

0.03 - 0.06%

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

-101 dB

-109 dB

1150 Watts
1250 Watts
625 Watts

2250 Watts
2250 Watts
2100 Watts

4200 Watts
4200 Watts
4250 Watts
3700 Watts

0.01 - 0.03%

0.03 - 0.06%

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

-101 dB

-109 dB

Gain (1.2V setting) 34.0 dB 38.4 dB 38.4 dB

Damping factor >15 0 >15 0 >15 0

Input impedance >10k, balanced or unbalanced >10k, balanced or unbalanced >10k, balanced or unbalanced

Maximum input level

(3.9V setting)
(1.2V setting)

Controls and indicators (front) Power•ChannelMUTEButtons•ChannelSELECTButtons•ChannelInputSignalandCLIPLEDIndicators•ChannelOutputand

Controls and indicators (rear) AC Power Disconnect AC Power Disconnect AC Power Disconnect

Input connectors Female XLR Female XLR Female XLR

Output connectors NL4 NL4 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 (HWD) 3.5” x 19” x 12” (89 x 482 x 305 mm) 3.5” x 19” x 16” (89 x 482 x 406 mm) 3.5” x 19” x 16” (89 x 482mm x 406mm)

Weight, Net / Shipping 18.5 lb (8.4 kg) / 22 lb (10.0 kg) 21.0 lb (9.5 kg) / 25 lb (11.3 kg) 22.0 lb (10.0 kg) / 26 lb (11.8 kg)

1 - 1.0 kHz sine wave, 1% THD, 1 channel driven

12.28V (+24 dBu)

3.88V (+14 dBu)

LIMITLEDMeters•HOME,ENTER,EXIT,GAINNavigationButtons•ControlKnob

12.28V (+24 dBu)

3.88V (+14 dBu)

12.28V (+24 dBu)

3.88V (+14 dBu)

27

TD-000368-00-A

Heat Loss Charts

BTU/hr kcal/hr

Idle

PLD 4.3 225 57
PLD 4.5 286 72

Load per Channel 8Ω 4Ω 2Ω

BTU/hr kcal/hr BTU/hr kcal/hr BTU/hr kcal/hr

1/8th Power

PLD 4.3 684 17 2 794 200 1040 262
PLD 4.5 811 204 114 4 288 1124 283

1/3rd Power

PLD 4.3 983 248 1261 318 1869 470.988
PLD 4.5 881 222 17 08 430 17 37 438

Full Power

PLD 4.3 2498 629 2925 737 419 8 1058
PLD 4.5 3116 785 5318 1340 4208 1060

EN EN

Idle

Thermal loss at idle or with very low signal level.

1/8 Power

Thermal loss at 1/8 of full power is measured with pink noise. It approximates operating with music or voice with light clipping and represents the
amplifier's typical "clean" maximum level, without audible clipping. Use these figures for typical maximum level operation.

1/3 Power

Thermal loss at 1/3 of full power is measured with pink noise. It approximates operating with music or voice with very heavy clipping and a very
compressed dynamic range.

Full Power

Thermal loss at full power is measured with a 1 kHz sine wave. However, it does not represent any real-world operating condition.

NOTE:

Specifications are subject to change without notice.

TD-000368-00-A

28

Mailing Address:

QSC Audio Products, LLC

1675 MacArthur Boulevard

Costa Mesa, CA 92626-1468 USA

Telephone Numbers:

Main Number: [phone]

Sales & Marketing: [phone] or toll free (USA only) [phone]

Customer Service: [phone] or toll free (USA only) [phone]

Facsimile Numbers:

Sales & Marketing FAX: [phone]

Customer Service FAX: [phone]

World Wide Web:

www.qsc.com

E-mail:

[e-mail]

[e-mail]

© 2013 QSC Audio Products, LLC. All rights reserved. QSC and the QSC logo are registered trademarks of QSC Audio

Products, LLC in the U.S. Patent and Trademark office and other countries.

All other trademarks are the property of their respective owners.

http://patents.qsc.com.

Amplificadores PLD

Manual del usuario

PLD4.2 — Amplificador de 4 canales y 1600 W

PLD4.3 — Amplificador de 4 canales y 2500 W

PLD4.5 — Amplificador de 4 canales y 5000 W

TD-000368-02-A

*TD-000368-02*