PLD PLD4.2, PLD4.3, PLD4.5 User Manual

PLD Amplifiers

User Manual

PLD4.2 — 4 Channel, 1600 W Amplifi er

PLD4.3 — 4 Channel, 2500 W Amplifi er

PLD4.5 — 4 Channel, 5000 W Amplifi er

TD-000368-01-A

*TD-000368-01*

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 fl ash 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 suffi cient 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.

• 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 amplifi ers) 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 fi t 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 specifi ed by the manufacturer.

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

• Refer all servicing to qualifi ed 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-000368-01-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 amplifi ers are in compliance with European Directive 2002/95/EC – Restriction of Hazardous Substances (RoHS).

The QSC PLD4.2, PLD4.3 and PLD4.5 amplifi ers 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 Amplifi ers

部件名称

(Part Name)

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。

铅

(Pb)

XOO O O O

XOO 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.)

TD-000368-01-A

3

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 specifi c 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 confi guration 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.

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-000368-01-A

4

Introduction

Built for system integrators, the PLD series amplifi ers provide multi-channel amplifi cation with built-in DSP and enough power to drive wide varieties
of speaker systems with optimal energy effi ciency. The PLD Series consists of three light-weight, 2RU, four-channel amplifi ers with on-board DSP and
fl exible channel combining. These amplifi ers not only provide the power and processing to make your system perform better, they offer outstanding
effi ciency ensuring that energy costs are kept to a minimum over the life of the installation.

PLD amplifi ers feature Flexible Amplifi er 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 amplifi ers use QSC’s third-generation class-D power-amplifi er design in combination with a custom power stage utilizing a new output
device. In addition, PLD amplifi ers 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 amplifi ers to draw current from the wall in a more effi cient and
controlled manner resulting in very high power from a single standard AC breaker. Additionally, the PLD Series amplifi ers offer multi-stage sleep
modes saving energy when possible without sacrifi cing performance. The result is an exceptionally powerful and fl exible platform that offers low
weight and effi ciency.

With four channels of amplifi cation 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 amplifi er is a capable and sophisticated loudspeaker processor. Integration of processing and amplifi cation means that the DSP
knows exactly what the amplifi er is doing so dynamics processing can be far more accurate and effective. This approach employs both RMS and Peak
Limiters that allow the amplifi er and loudspeaker to produce more output without being pushed to distortion or destruction.

The on-board DSP offers four channels of crossover fi lters, 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 amplifi ers provide Intrinsic Correction™, a
combination of fi ltering, limiting and loudspeaker knowhow that was fi rst 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 confi guration 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 amplifi ers 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 amplifi er should need
returning for service.

Package Contents

1. Quick-Start Guide TD-000351-00

2. Warning Information Sheet TD-000420-00

3. PLD Amplifi er

4. IEC AC Power Cord

5. USB Cable

TD-000368-01-A

5

Features

Amplifi er 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)

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

Amplifi er Rear Panel

NOTE:

position of the fan and the connectors.

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

1 2 4

USB

XLR

PIN 1

PARALLEL PARALLEL PARALLEL PARALLEL

1

PIN 2

PIN 3

ROUTABLE INPUTS

3

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

5

BRIDGED OUTPUTS

B

D

X

Y

6

7 8 109

POWER

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-000368-01-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

Amplifi er Control

ENTER Button

ENTER

• Navigates into the menu structure

A

MUTE

SEL

1

B

MUTE

SEL

2

OUTPUT

LIM

-10

-20

CLIP

SIG

INPUT

MUTE

SEL

3

C

D

MUTE

SEL

4

HOME

ENTER

EXIT

GAIN

MASTER
CONTROL

• Enters the edit mode for adjusting parameters

• Confi rms 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.

— Figure 3 —

• 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 confi rm any value

Off Mode

• Rear power switch is off, the amplifi er is not operable. The power

being edited and take you to the Home screen.

GAIN Button

GAIN GAIN

switch is the AC Mains disconnect.

• The power button is not illuminated.

• Turn the power switch to on. The amplifi er enters the mode it was in
when power was removed. The power button is illuminated based on
the mode.

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

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

• The Gain button illuminates green when selected.

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 amplifi er 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 amplifi er is not operable; audio will not pass.

Mute All Mode

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

• The power button fl ashes red.

• The outputs are muted and amplifi ers are off.

• The front panel and DSP functionality are fully operable. Any changes
you make are saved and take effect in the Run Mode.

Master Control Knob

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

• Illuminates blue when a signal is present.

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

• Adjusts parameters

TD-000368-01-A

7

PLD Amplifi er Signal Flow

Input Settings Output Processing

1

Sensitivity

2

3

4

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

Screen Types

Informational

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

Source

Select

Source

Select

Source

Select

Source

Select

Mute

Mute

Mute

Mute

Button

Actuated

High-

pass

Filter

High-

pass

Filter

High-

pass

Filter

High-

pass

Filter

Gain /

Polarity

Gain /

Polarity

Gain /

Polarity

Gain /

Polarity

Crossover

Low­pass

Filter

Low-

pass
Filter

Low­pass

Filter

Low-

pass
Filter

— Figure 4 —

F1: A B C D

Home (Press HOME for more information)

Full

A - FR

+1.5 dB

Full

B - FR

+3.5 dB

5-Band

PEQ

5-Band

PEQ

5-Band

PEQ

5-Band

PEQ

Full

C - FR

+1.5 dB

Delay

Delay

Delay

Delay

Full

D - FR

+1.5 dB

RMS
Peak

Limiter

RMS
Peak

Limiter

RMS
Peak

Limiter

RMS
Peak

Limiter

Amp Config.

D/A

D/A

D/A

D/A

Meter

A

Meter

B

Meter

C

Meter

D

Set by

Preset or Wizzard

Preset # and Configuration
Location and breadcrumbs

Channel Configuration
and Gain

A

B

C

D

X

Y

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 confi rm changes for various system parameters.
Use the ENTER button to edit and confi rm 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

Preset # and Configuration
Location and breadcrumbs

Empty area indicates no
selections above (CCW).

Current Menu Selection

Next Menu selection below
(CW)

Parameter being edited

Parameter not selected

Parameter selected

Gain

-7.0 dB

TD-000368-01-A

8

Menu Tree

Presets

Preset Recall

Preset Save

Preset Wizard

*For QSC Line Arrays only

Inputs

Input Sensitivity

Input Gain

Outputs

Source Select

Processing

Crossover

PEQ

Delay

Limiter

Array Correction*

Load Speaker

Save Speaker

Utilities

Status

Amp ID

Display

Lockout

Password

About Presets

The PLD amplifi ers are preset driven. In order to get the most out of the amplifi ers, an understanding of how presets work is essential. A Preset, in the
context of the PLD amplifi ers, is a combination of amplifi er confi guration (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 amplifi ers come with 20 unchangeable factory presets, and 50 user-defi ned 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
confi gurations. Factory presets F10: thru F20: include basic settings along with the output confi gurations.

Creating User-defi ned Presets

A preset can be created in two ways, the fi rst 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-defi ned 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 simplifi es 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 amplifi er confi guration 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-defi ned presets are confi gured the same as factory preset F1. Either method described above

TD-000368-01-A

9

Installation

The following steps are written in the recommended installation order.

Mount the PLD Amplifi er

The PLD Series amplifi ers are designed to be mounted in a standard rack-mount
unit. The amplifi ers 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 amplifi er 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 —

AC Mains

WARNING!:

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

The PLD amplifi ers 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 amplifi er has no audio for fi fteen minutes, the amplifi er stops switching. The amplifi er returns to the Run mode the instant
audio is present.”

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

— Figure 9 —

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

TD-000368-01-A

10

Inputs

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 amplifi ers. 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 amplifi ers.

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 confi guration of the amplifi er.

USB (Optional)

The USB cable (supplied) connects to a Mac or PC for use with the Amplifi er Navigator software. You can update the amplifi er fi rmware, save and
deploy confi guration fi les, and more. Refer to the Amplifi er Navigator online help for details.

Outputs

The PLD amplifi ers have four confi gurable outputs. You can set the power, combine outputs (bridged and parallel), and adjust the DSP for each
output. When the output confi guration of the amplifi er 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 Confi guration

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

F1: A B C D

F7: ABC D

1

ABC

4

D

Current Configuration

Selected Configuration

Input number

Frequency Range color

Output Configuration

— Figure 13 —

Input number

Sub-woofer

Low-Frequency

Frequency Range Color Codes

Mid-Frequency

High-Frequency

Full Range

TD-000368-01-A

11

WARNING!:

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

the amplifi er. 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 amplifi er 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 fl ashes red, the amplifi er is in Mute All mode.

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

The following is a list of confi gurations 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 Confi gurations

F9: ABCD

ABCD Parallel

F9: ABCD

1

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 Confi gurations

F6: A+B C+D

F6: A+B C+D

1

A+B

3

C+D

AB in Parallel
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

CD Y

AB X

CD Y

Optional

1+

1-

1+1-2+

1+

1-

2-

TD-000368-01-A

12

F5: AB C+D

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+

AB X

1-

CD Y

Optional

2+

2-

1+

1-

F4: AB CD

F4: AB CD

1

AB

3

CD

AB Parallel
CD Parallel

= Subwoofer

= Mid Range

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

C (1+) and D (1+)
C (1-) and D (1-)

1+

1-

1-

1+

Optional

1+

A

C

1+

B

1-

1-

D

X

Y

— Figure 18 —

F7: ABC D

F7: ABC D

1

ABC

ABC Parallel
D Single

= Subwoofer

4

D

= High Range

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

1+

1-

1+

1-

Optional

1+

AB X

CD Y

1-

1+

1-

— Figure 19 —

Three-Channel Confi gurations

F3: Config - A+B C D

F3: Config - A+B C D

1

A+B

TD-000368-01-A

3

A+B Bridged
C Single

AB X

1+

1-

D Single

= Subwoofer

4

C

D

= Mid Range

= High Range

1+

1-

1+

CD Y

1-

— Figure 20 —

13

F2: AB C D

F2: AB C D

1

AB

Four-Channel Confi guration

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

A Single
B Single
C Single

1+

1-

1+

A

B X

1-

D Single

1 2

AB3C

4

D

= Full Range

1+

1-

1+

C

D Y

1-

— Figure 22 —

Connect the Loudspeakers

WARNING!:

terminals on the rear of the amplifi er. 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 amplifi er to OFF.

2. Connect the loudspeaker wiring to male NL4 connectors (Figure 23) as needed for your amplifi er's confi guration.
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 amplifi er, according to your amplifi er's confi guration.

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-000368-01-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-

Output Connectors

Standard Bridged

A

B

X

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-

C

D

Y

— Figure 24 —

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.

AC Power On

After connecting the outputs to the loudspeakers, you may turn the amplifi er 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 amplifi er to ON. The amplifi er 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 confi guration, and under different loads.

PLD 4.3 — Total Power: 2500W

8 Load 4 Load 2 Load

Confi guration

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) 1250 625 625 1150 650 650 625 600 600

2 CH (AB CD) 1000 1000 1200 1200 1200 1200

2 CH (AB C+D) 1000 1250 1200 1150 1200 625

2 CH (A+B C+D) 1250 1250 1150 1150 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

ABCD ABCD ABCD

TD-000368-01-A

— Table 2 —

15

Confi guration

4 CH (A B C D) 1150 1150 1150 1150 1250 1250 1250 1250 625 625 625 625

3 CH (AB C D) 1200 1150 1150 2250 1250 1250 2100 625 625

3 CH (A+B C D) 2250 1150 1150 1150 1250 1250 625 625 625

2 CH (AB CD) 1200 1200 2250 2250 2100 2100

2 CH (AB C+D) 1200 2250 2250 1150 2100 625

2 CH (A+B C+D) 2250 2250 1150 1150 625 625

2 CH Alt (ABC D) 1150 1150 2400 1250 4100 625

1 CH (ABCD) 1150 2300 4200

1 CH (AB+CD) 4200 4250 2250

Preset Wizard

PLD 4.5 — Total Power: 5000W

8 Load 4 Load 2 Load

ABCD ABCD ABCD

— Table 3 —

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)

AB C D

8.0 - - - - - -

625 - - - - - -

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

Default = 8 Ω

Default = min. for amp

Impedance and Power
are dynamically linked
for adjustments.

Scroll to select (Imped or Power)

To edit, press

Turn to adjust parameter

To confirm, press

Repeat for remaining

output channels

ENTER

ENTER

Possible Output Mode Combinations using the Preset Wizard

B

A

- - -

- - -

25%

25%

*

C

- - -

25%

D

- - -

25%

AB

- - -

50%

- - -

25%

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-000368-01-A

— Figure 25 —

16

Step 2 —

Select Output Channel for Speaker Assignment

OUTPUTS SPEAKERS SAVE

Step 3 —

Output:

Imped:

Power:

Spkr:

Select Speaker Type for Channel

ADCB

8.0 8.08.08.0

625 625625625

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

Assign

Assign

AssignAssign

OUTPUTS SPEAKERS SAVE

Output:

Speaker:

Band:

Filter:

WL2102 BiLFNS

2-Way LF

80 Hz

ASSIGN

A

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

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

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

Scroll to select Output channel

To Assign a loudspeaker, press

Continue to Step 3.

To edit Speaker, press

Scroll to select a Speaker model

To confirm, press

Scroll to select (Band, Filter)

To edit, press

Turn to adjust parameter

To confirm, press

ENTER

ENTER

ENTER

ENTER

ENTER

Scroll to select ASSIGN

To assign the speaker to the output channel, press

ENTER

Step 4 —

Step 5 —

Select User Preset Number

OUTPUTS SPEAKERS SAVE

User Preset Number:

New Preset Name

Con f i g - A

SAVE

Edit preset number or press EXIT

Assign New User Preset Name

OUTPUTS SPEAKERS SAVE

User Preset Number: 21

New Preset Name

My P r e s

SAVE

Edit preset number or press EXIT

21

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

Indicates editing

Indicates “New
Preset Name”
selection

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

Scroll to the Save screen

To edit User Preset number, press

Turn to adjust parameter

To confirm, press

Scroll to New Preset Name press

Scroll to desired letter position press

Turn to select desired character press

When finished, scroll to SAVE press

ENTER

ENTER

ENTER

ENTER

ENTER

ENTER

TD-000368-01-A

17

Create New Preset from an Existing Preset

To create a preset from an existing preset, recall the preset with the desired output confi guration, 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 confi guration, input parameters, and loudspeaker profi les (DSP, load, and assignments). There are 20 factory presets that
can be recalled, but not overwritten.

• Factory presets F1: thru F9: contain output confi gurations only.

• Factory presets F10: thru F20: contain the output confi gurations and basic DSP for the confi gurations.

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

HOME > PRESETS > PRESET RECALL > ENTER

Step 1 —

Step 2 —

Select Preset

F1: Config - A B C D

F1: Config - A B C D

1

A

Input Sub MF FullHFLF

Confi rm Selection

F1: A B C D

F18: Triamp - A+B C D

1

A+B

Indicates more Presets

Scroll to desired Preset

2

3

B

4

C

D

To select the Preset conguration, press

3

4

C

D

20 Factory, 50 User-defined

To conrm the selection, press

ENTER

ENTER

The message at the bottom changes to: “Recalling Preset now...”

Press ENTER to confirm selection

You may hear relays clicking

TD-000368-01-A

18

Set up the Inputs

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

Input

+14 dBu

Press ENTER to confirm

Input

-11.8 dB

1

Scroll to select (+14 or +4 dBu)

(The background turns to green.)

To confirm selection, press

To move to the next input, press

ENTER

SEL

Repeat procedure for

remaining input channels.

1

Scroll to select (-100 thru 20 dB)

(0.1 dB increments)

To confirm selection, press

To move to the next input, press

ENTER

SEL

Press ENTER to confirm

Set up the Outputs

NOTE:

Source Select

The PLD amplifi ers 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

Press ENTER to confirm

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

TD-000368-01-A

19

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-defi ned loudspeaker then make any adjustments needed, and save the changes as a user-defi ned 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 Profi le

HOME > OUTPUTS > SPKR PROC > LOAD SPKR > ENTER

A loudspeaker profi le 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 modifi cations and save your
new profi le, or you can build the profi le without loading a loudspeaker, and then save it as a new profi le. If you load a QSC loudspeaker, the amplifi er
is set for that specifi c 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 Profi les" on page 26. There may be additions to this list in the futrue that can be loaded with fi rmware updates.

NOTE:

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 profi le, 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 fi lters

F1: A B C D

HPF

Freq

70.0

TD-000368-01-A

Typ e

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 fi ve 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

Typ e

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

TD-000368-01-A

21

Limiter

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

Typ e
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 amplifi er and the output confi guration 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 amplifi er.

Step 2 —

Set the AUTO Mode Parameters

F1: A B C D

AUTO

Typ e
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

Scroll to select (RMSThr, PkThr,

PkAttk, PkRel, RMSAttk, & RMSRel)

To edit, press

Turn to adjust parameter

To confirm, press

To exit, press

ENTER

ENTER

EXIT

TD-000368-01-A

22

Array Correction

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 —

Save a Loudspeaker

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

HOME > OUTPUTS > SPKR PROC > SAVE SPKR > ENTER

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

Step 1 —

Save a Loudspeaker with Custom Load Profi le

Step 2 —

ABOUT SPEAKERS SAVE

Output Data:

Band: 2-Way LF

Power Rating:

Enter Speaker Info

AB + CD

Name the Loudspeaker Profi le

SPEAKERSABOUT

Speaker Profile Name

My S pk r

SAVE

Press ENTER to edit name

16.0Nominal Imped:

1000

SAVE

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

Scroll to select (Band,

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

TD-000368-01-A

23

Save the Preset

After modifying the Inputs and Outputs for all channels, save the current settings as one of the 50 user-defi ned presets (U1: thru U50:). Each of the
user presets, by default, is the same as factory preset F1: Confi g 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-defi ned 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

U1: A B C D

User Preset Number:

New Preset Name

Con f i g - A

21

To edit User Preset number, press

Turn to select desired number (1 thru 50)

ENTER

SAVE

Edit preset number or press EXIT

Step 2 —

Step 3 —

Name the Preset

U1: A B C D

User Preset Number:

New Preset Name

Con f i g X A

Press ENTER to edit preset name

Save the Preset

SAVE

21

Indicates editing

Indicates “New
Preset Name”
is selected

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

U1: A B C D

User Preset Number:

New Preset Name

Con f i g X A

21

To confirm User Preset Number, press

Scroll to New Preset Name

Scroll to desired letter position

Turn to select desired character

When you are finished naming, press

Scroll to SAVE

press

press

press

Press

SAVE

SAVE

Press ENTER to save preset

To confirm Save, press

ENTER

ENTER

ENTER

ENTER

EXIT

ENTER

ENTER

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 —

Overwrite Preset

U1: A B C D

SAVE

Press ENTER to save preset

TD-000368-01-A

24

To save, press

To exit without saving, press

To confirm the save, press

ENTER

EXIT

ENTER

Utilities

HOME > UTILITIES > STATUS > ENTER

Step 1 —

Check the amplifi er'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

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

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

HOME > UTILITIES > AMP ID > ENTER

Step 2 —

Name the Amplifi er

UTILITY - AMP ID

Serial #: 123abc Amp ID: my amp ID

Change Amp ID to:

my amp I D

CONFIRM

Indicates editing

Indicates “New
Preset Name”
is selected

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

To edit “Change Amp ID to:”, press

Scroll to desired letter position

Turn to select desired character

When you are finished, press

Scroll to CONFIRM

press

press

Press

ENTER

ENTER

ENTER

EXIT

ENTER

HOME > UTILITIES > PASSWORD > ENTER

The default password for all amplifi ers is

QSC

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

A — Z a — z 0 — 9 _ - space

Step 1 —

Add or change the Password

UTILITY - CHANGE PASSWORD

Current Password:

QSC

New Password:

MY pa s wosr

To enter “Current Password:”, press

With the first letter position selected, press

Turn to select desired character

press

When you complete the current password,

the “New Password:” is automatically selected

ENTER

ENTER

ENTER

Repeat the procedure for the “New Password:”

CONFIRM

Scroll to CONFIRM

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 amplifi er.

Step 2 —

Enter Password to lock or unlock

UTILITY - LOCKOUT

Enter Password:

my pa s wosr

CONFIRM

TD-000368-01-A

25

With “Enter Password:” selected, press

With the first letter position selected

Scroll to desired character

When you complete the password correctly,

CONFIRM is automatically selected.

To lock or unlock the amplifier, press

Press

press

press

ENTER

ENTER

ENTER

ENTER

ENTER

Included Loudspeaker Profi les

QSC Audio

AP-5102

AP-5122

AP-5122m FOH

AP-5122m MON

AP-5152

GP118-sw

GP212-sw

GP218-sw

S8T

S10T

S12

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

TX 2152

TX2181

JRX112M

JRX115

J RX 118S

JRX125

MR X515

MRX518S

MRX525

MRX528S

PR X415M

PRX425

SR X712M

SR X715

SRX718S

SRX722

SRX725

SRX728S

SRX738

VRX932LA

Peavy

PR10

PR12

PR15

PV115

P V118

PV12M

PV215

PVX12

PVX15

SP218

SP4

Yahama

BR12

BR12M

BR15

C115V

S115V

S215 V

SM15V

SW218V

TD-000368-01-A

26

Specifi cations

PLD4.2 PLD4.3 PLD4.5

4 Ch. Continuous

2 Ch. Continuous

1 Ch. Continuous

Typical Distortion

Maximum Distortion

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

Noise

1

8
4
2

1

8
4
2

1

8
4
2
1

8
4

4 - 8 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 >150 >150 >150

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

Amplifi er 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)

TD-000368-01-A

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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 4.3 684 172 794 200 1040 262

PLD 4.5 811 204 1144 288 1124 283

1/3rd Power

PLD 4.3 983 248 1261 318 1869 470.988

PLD 4.5 881 222 1708 430 1737 438

Full Power

PLD 4.3 2498 629 2925 737 4198 1058

PLD 4.5 3116 785 5318 1340 4208 1060

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
amplifi er's typical "clean" maximum level, without audible clipping. Use these fi gures 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:

Specifi cations are subject to change without notice.

TD-000368-01-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 offi ce and other countries.

All other trademarks are the property of their respective owners.

http://patents.qsc.com.