QSC CXD4.2-Q, CXD4.3-Q q_amp_cxdq_series_usermanual_en.pdf

CXD-Q Amplifiers

User Manual

CXD4.2Q — 4 Channel, 2000 W Network Amplifi er

CXD4.3Q — 4 Channel, 4000 W Network Amplifi er

CXD4.5Q — 4 Channel, 8000 W Network Amplifi er

TD-000438-01 -A

*TD-000438-01*

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.

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this apparatus near water.

6. Clean only with a dry cloth.

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

8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus that produce heat.

9. To reduce the risk of electrical shock, the power cord shall be connected to a mains socket outlet with a protective earthing connection.

10. 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.

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

12. Only use attachments/accessories specifi ed by the manufacturer.

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

14. 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.

15. The appliance coupler, or the AC Mains plug, is the AC mains disconnect device and shall remain readily operable after installation. On units
equipped with powerCon® connectors, the AC Mains disconnect device is the AC Mains plug only; do not use the appliance coupler.

16. Adhere to all applicable, local codes.

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

18. Do not use any aerosol spray, cleaner, disinfectant or fumigant on, near or into the apparatus. Clean only with a dry cloth.

19. Do not unplug the unit by pulling on the cord, use the plug.

20. Do not submerge the apparatus in water or liquids.

21. Keep ventilation opening free of dust or other matter.

TD-000438 -01 -A

2

Maintenance and Repair

WARNING!:

maintenance and repair methods. To avoid a danger of subsequent damage to the apparatus, injuries to persons and/or the
creation of additional safety hazards, all maintenance or repair work on the apparatus should be performed only by a QSC
authorized service station or an authorized QSC International Distributor. QSC is not responsible for any injury, harm or related
damages arising from any failure of the customer, owner or user of the apparatus to facilitate those repairs.

Advanced technology, e.g., the use of modern materials and powerful electronics, requires specially adapted

FCC Statement

For CXD4.3Q and CXD4.5Q

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.

For CXD4.2Q

NOTE:

These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses
and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct
the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

RoHS STATEMENT

The QSC CXD4.2Q, CXD4.3Q , and CXD4.5Q amplifi ers are in compliance with European Directive 2011/65/EU – Restriction of Hazardous
Substances (RoHS2).

The QSC CXD4.2Q, CXD4.3Q , and CXD4.5Q amplifi ers are in compliance with “China RoHS” directives. The following chart is provided for product
use in China and its territories:

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。
(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.)

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.

QSC CXD4.2Q, CXD4.3Q , and CXD4.5Q Amplifi ers

有毒有害物质或元素

(Toxic or hazardous Substances and Elements)

铅

(Pb)

XOO O O O

XOO O O O

汞

(Hg)

镉

(Cd)

六价铬

(Cr(vi))

多溴联苯

(PBB)

多溴二苯醚

(PBDE)

Warranty

For a copy of the QSC Limited Warranty, visit the QSC website at www.qsc.com

TD-000438 -01 -A

3

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-000437

2. Warning Information Sheet TD-000420

3. CXD-Q Amplifi er

5. Euro-style Connector Plug, 3-pin (4)

6. Euro-style Connector Plug, 8-pin (1)

7. Euro-style Connector Plug, 3.5 mm, 16-pin (1)

4. IEC AC Power Cord

Features

Amplifi er Front Panel

OUTPUT

1

10
11

CXDQ

2

NETWORK
AMPLIFIER

3
4
5
6
7
8

9

FAULT

AB

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 maximum amplifi er output (Blue)

5. Output Channel -20 dB below maximum amplifi er output (Blue)

6. Soft Power Button (Green/Red)

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

8. Input Channel Clip LEDs (Red)

LIM

-10

-20

CLIP

SIG

INPUT

243

CD

MUTEMUTEMUTEMUTE

SELSELSELSEL

— Figure 1 —

10. Input Channel Signal-Present LEDs (Blue)

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

12. LCD Graphic Display

13. NEXT Button

14. PREV Button

15. MASTER CONTROL Knob

16. ID Button

17. Pinhole Reset

NEXT

PREV

GAIN

ID

9. FAULT LED

12

13

14

15

16
17

TD-000438 -01 -A

4

Amplifi er Rear Panel

NOTE:

The CXD4.3Q , and CXD4.5Q models have a different rear panel confi guration than the CXD4.2Q amplifi er. The difference is

that the position of the fan and the eight-pin Euro-style connector and associated information are interchanged.

1 3 4 5 6 7 92 8

9
10
11
12
13
14
15
16

ROUTABLE INPUTS

2143

CH A+B

T1+ T3-

CH C+D

T5+ T7-

CH AB+CD

T1+ T5­T3+ T7-

CH AB

T1+ T2­T3+

CH CD

T5+ T6­T7+ T8-

CH ABC

T1+ T2­T3+ T4­T5+ T6-

CH ABCD

T1+ T2­T3+ T4­T5+ T6­T7+ T8-

T4-

T1

+

CH A

T2

-

T3

+

CH B

T4

-

T5

+

CH C

T6

-

T7

+

CH D

T8

-

LAN A L AN B

1
2
3
4
5
6
7
8

— Figure 2 —

1. RJ-45 Q-SYS Q-LAN A/B

2. GPIO Euro-style Connector, 16-pin

3. Inputs - Four three-pin Euro-style Connectors

4. One eight-pin Euro-style Loudspeaker Connector

5. Cooling fan

6. AC Power Switch

7. Locking IEC Power Connection

8. Rear Rack-mount Bracket

9. Front Rack-mount Brackets

Installation

The following steps are written in the recommended installation order.

Rack-Mount the Amplifi er

The CXD-Q Series amplifi ers are designed to be mounted in a standard rack-mount unit. The amplifi ers are 2RU high, the CXD-Q4.3 and CXD-Q4.5
are 381 mm (15 in) deep, the CXD-Q4.2 is 229 mm (9 in) deep.

1. Secure the amplifi er in the rack with eight screws (not supplied), four in front, four in back. For complete instructions, refer to TD-000050 "Rear
Rack Ears Installation Guide" which can be found on the QSC Website (www.qsc.com)

CAUTION!:

Be sure that nothing is blocking the front or rear ventilation openings, and that each side has a minimum of

2 cm clearance.

AC Mains

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.

1. Make sure the power switch on the rear of the amplifi er is off.

2. Connect the IEC power cord to the AC receptacle.

WARNING!:

Do not turn the amplifi er on at this time.

(Figure 1)

— Figure 3 —

TD-000438 -01 -A

5

Inputs

Connect the amplifi er LAN A, and if available, LAN B, to the Q-LAN network. (Figure 6) Refer to your Q-SYS documentation for network requirements
and connection detail.

ROUTABLE INPUTS

— Figure 6 —

2143

Balanced

+

— Figure 4 —

Unbalanced

—

—

+

LAN A LAN B

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16

— Figure 5 —

The analog inputs are converted to digital audio in the CXD-Q amplifi ers and then routed to
the Q-SYS Core over the network. The digital signals show up in Q-SYS Designer at the CXD-Q
input component where they can be routed as needed. Refer to the Q-SYS documentation.

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

2. Wire the audio mic- or line-level source to up to four Euro-style connectors (supplied).
You can use either balanced inputs (Figure 4) or unbalanced inputs (Figure 5).

3. Plug the connectors into the appropriate receptacles (Routeable Inputs 1, 2, 3, 4) Figure

6 and Figure 7.

GPIO

-

+

-

+

-

+

-

+

Refer to "GPIO" on page 13 for details about the GPIO feature.

Outputs

— Figure 7 —

The confi guration of the amplifi er and the amplifi er component in the Q-SYS design fi le must match. Double check that these are identical and if necessary
change the confi guration by following the instructions on the front panel of the amplifi er. When the output confi guration of the amplifi er changes, the
Outputs to the loudspeakers change accordingly. Use the diagrams shown in Figure 8 thru Figure 13 as a reference for wiring the loudspeakers.

CAUTION!:

the output confi guration specifi ed in Q-SYS Designer.

Before turning the amplifi er on, double check your output connections to be sure they are connected properly based on

Figure 8 through Figure 12 are examples of the three types and combinations of output confi gurations: Separate, Bridged and Parallel. The tables to

the right of the loudspeaker connections give all the possible confi gurations and their connections.

Separate Channels (A B C D)

For Four Separate Loudspeakers

Use four 2-wire cables, connect to:

• T1+/T2- (Loudspeaker 1)

• T3+/T4- (Loudspeaker 2)

• T5+/T6- (Loudspeaker 3)

• T7+/T8- (Loudspeaker 4)

CHANNEL CONFIGURATION

Q A

Channel Configuration Locked to Design

Q C

Q B

4 Channels: A B C D

Q D

— Figure 8 —

OUTPUTS TO SPEAKERS

+

CH A

­+

CH B

­+

CH C

­+

CH D

-

T1

T2

T3

T4

T5

T6

T7

T8

SETTINGS CAN BE
CONFIGURED FOR

70V, 100V AND

200V DIRECT

BRIDGED

T1+ T3-

COMBINING APPLICATIONS

OUTPUT.

CH A+B

CH C+D

T5+

T7-

CH AB+CD

T1

+

T5-

T3+

T7-

PARALLEL CHANNEL

CH AB

T1+

T2-

T3+

T4-

CH CD

T5+

T6-

T7+

T8-

CH ABC

T2-

T1

+

T4-

T3+

T6-

T5+

CH ABCD

+

T2-

T1
T3+

T4-

T5+

T6-

T7+

T8-

TD-000438 -01 -A

6

Bridged (A+B) and Separate (C D) Channels

S

S

CH A+B

CH C+D

T5+ T7-

CH AB+CD

+

T1

T5-

T3+

T7-

PARALLEL CHANNEL

COMBINING APPLICATION

CH AB

T1+

T2-

T3+

T4-

CH CD

T5+

T6-

T7+

T8-

CH ABC

T2-

T1

+

T4-

T3+

T6-

T5+

CH ABCD

T1

+

T2-

T3+

T4-

T5+

T6-

T7+

T8-

For A+B (Bridged) One Loudspeaker

Use one 2-wire cable connect to:

• T1+/T3-

For C & D (Separate) Two Loudspeakers

Use two 2-wire cables connect to:

• T5+/T6- for CH C

• T7+/T8- for CH D

CHANNEL CONFIGURATION

Q A+B

3 Channels: A+B C D

Channel Configuration Locked to Design

Q C

Q D

— Figure 9 —

+

CH A

­+

CH B

­+

CH C

­+

CH D

-

T1

T2

T3

BRIDGED

T4

T1+ T3-

T5

T6

T7

T8

Two Pair of Parallel Channels (AB CD)

For AB (Parallel) CD (Parallel) Two Loudspeakers

Use two 2-wire cables, connect to:

• T1+/T2-

• T5+/T6-

CHANNEL CONFIGURATION

Q AB

2 Pair of Paraller Channels: AB CD

Channel Configuration Locked to Design

Q CD

OUTPUTS TO SPEAKERS

+

CH A

­+

CH B

­+

CH C

­+

CH D

-

T1

T2

T3

T4

T5

T6

T7

T8

SETTINGS CAN BE
CONFIGURED FOR

70V, 100V AND

200V DIRECT

BRIDGED

T1+ T3-

T5+

T1
T3+

COMBINING APPLICATIONS

OUTPUT.

CH A+B

CH C+D

T7-

CH AB+CD

+

T5-
T7-

PARALLEL CHANNEL

CH AB

T1+ T2-

CH CD

T5+ T6-

CH ABC

T2-

T1

+

T4-

T3+

T6-

T5+

CH ABCD

+

T2-

T1
T3+

T4-

T5+

T6-

T7+

T8-

— Figure 10 —

Parallel Channels (ABCD)

For One Loudspeaker

Full power to one loudspeaker

Use one 2-wire cable, connect to:

• T3+/T4-

For Multiple Loudspeakers

Full power for multiple loudspeakers in parallel

Use up to four 2-wire cables, connect to:

• T1+/T2-

• T3+/T4-

• T5+/T6-

• T7+/T8-

CHANNEL CONFIGURATION

Q ABCD

1 Channel: A B C D

Channel Configuration Locked to Design

— Figure 11 —

+

CH A

­+

CH B

­+

CH C

­+

CH D

-

PARALLEL CHANNEL

COMBINING APPLICATION

CH AB

T1+

T1

T2

T3

BRIDGED

T4

T5

T6

T7

T8

CH A+B

T1+

CH C+D

T5+

CH AB+CD

T1

+

T3+

T3-

T7-

T5-
T7-

T2-

T3+

T4-

CH CD

T5+

T6-

T7+

T8-

CH ABC

T2-

T1

+

T4-

T3+

T6-

T5+

CH ABCD

+

T2-

T1
T3+

T4-

T5+

T6-

T7+

T8-

TD-000438 -01 -A

7

Parallel Channels Bridged (AB + CD)

For One Loudspeaker

Full power to one loudspeaker

Use one 2-wire cable, connect to:

• T1+/T5-

CHANNEL CONFIGURATION

Q AB+CD

1 Channel: AB+CD

Channel Configuration Locked to Design

— Figure 12 —

OUTPUTS TO SPEAKERS

SETTINGS CAN BE
CONFIGURED FOR

COMBINING APPLICATIONS

70V, 100V AND

200V DIRECT

OUTPUT.

BRIDGED

CH A+B

T1+

T3-

CH C+D

T5+

T7-

CH AB+CD

T1

+

T5-

PARALLEL CHANNEL

CH AB

T1+

T2-

T3+

T4-

CH CD

T5+

T6-

T7+

T8-

CH ABC

T2-

T1

+

T4-

T3+

T6-

T5+

CH ABCD

+

T2-

T1
T3+

T4-

T5+

T6-

T7+

T8-

Connect the Loudspeakers

1. Connect the loudspeaker wiring to the 8-pin Euro-style connector as needed for
your amplifi er's confi guration.

2. Install the female 8-pin Euro-style connector onto the male connector on the rear of
the amplifi er as shown in Figure 13.

3. Use a Phillips screwdriver to secure the connector.

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.) are 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. If the amplifi er is in Standby
or Mute All mode (Power button LED solid red or blinking), press the Power button
to change the amplifi er to Run mode.

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

— Figure 13 —

TD-000438 -01 -A

8

Amplifi er Control

NOTE:

connected to the Q-SYS Core via Q-LAN. When the
amplifi er is not connected to the Q-SYS Core, it is in a Fault
mode, and not operational.

Off Mode

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

• The power button is not illuminated.

• Turn the power switch to on. The amplifi er enters the mode in which
it was when power was removed – Run, Mute All, or Standby.

The following scenarios assume the amplifi er is

NEXT & PREV Buttons

• Navigates forward and backwards through the screens.

NEXT

ID Button

• Press this button to display a screen with the amplifi er's network
name. In addition, the ID buttons on the associated Q-SYS Amplifi er
component and the associated Q-SYS Confi gurator item fl ashes. Press
again, or click one of the other ID buttons, to stop the fl ashing and
exit the screen.

• When prompted, press this button to change the amplifi er
confi guration to match the confi guration of the associated
Q-SYS design.

PREV

ID

Run Mode

• From Standby or Mute All mode, press and release the power button
on the front panel. The amplifi er is in Run Mode.

• The power button is illuminated green.

• The amplifi er is fully operable; audio can pass.

Standby Mode

• From Mute All or Run mode, press and hold the power button on the
front panel for approximately four seconds.

• The power button illuminates solid red.

• 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, all output Mute buttons are red.

• The amplifi er output is disabled, but the front panel is fully operable.

SEL Buttons

• Use these buttons to select an output channel in order to change
the Gain.

• Select more than one channel to change multiple gain settings at the
same time.

• If two or more outputs are bridged or in parallel, pressing one button
in the group selects all channels in that bridged or parallel group.

Mute Buttons

• Use these buttons to mute the audio of the associated output
channel.

• When the output confi guration is changed, the Mute buttons are
engaged automatically. You must manually unmute the channels.

• When a new design is sent to the amplifi er from Q-SYS, the outputs
are muted while the amplifi er is offl ine.

Pinhole Reset

SEL

MUTE

Master Control Knob

• Adjusts the Gain for the selected channel or channels. At least one
channel must be selected.

• When one or more channels are selected, turn the Master Control
knob to jump to the Gain screen. After a few seconds with no activity,
it returns to the earlier screen.

• If there is more than one channel selected, and the gains for those
channels are different, the difference is maintained unless the gain is
raised or lowered to the limits for both channels.

TD-000438 -01 -A

• Insert a paper clip or similar tool into the pinhole then press and hold
for 5 seconds to reset the amplifi er to the factory default settings. The
default settings include network settings, and amplifi er name.

9

Input and Output Signal Flow

The CXD-Q amplifi ers have four Mic/Line Inputs and four amplifi ed Outputs on the rear of the amplifi er. The Inputs and Outputs on the rear of the
amplifi er are not connected inside the amplifi er.

The analog inputs are converted to digital audio in the amplifi er (1) and then routed to the Q-SYS Core via Q-LAN (LAN A, LAN B) (2). The digital
signals are brought into the Q-SYS design to the CXD-Q Amplifi er Input component (3). From the CXD-Q Input component the signals can be sent
DSP in the Core (4), and routed anywhere else within the Q-SYS system.

Likewise, in Q-SYS Designer digital signals are received at the CXD-Q Output component (5) and fed from the Q-SYS Core to the amplifi er via Q-LAN
(6), converted to analog signals and then to the amplifi ed outputs of the CXD-Q (7). The CXD-Q output component can have one to four outputs
depending on the confi guration of the amplifi er. The desired confi guration is selected in the Q-SYS Designer properties menu for that amplifi er.

1345672

Q-SYS

ROUTABLE INPUTS

2143

Routable

Inputs

A/D Q-LAN

Q-LAN

CXD-Q In

Ampli er-1

CXD-Q Input

Component

Screens

Q-Sys

DSP,

DSP,

Routing,

Routing,

and so on.

and so on.

— Figure 14 —

CXD-Q Out
Ampli er-1

CXD-Q Output

Component

D/A

Outputs

CHANNEL CONFIGURATION

T1

+

CH A

T2

-

T3

+

CH B

T4

-

T5

+

CH C

T6

-

T7

+

CH D

T8

-

Channel Confi guration Screens

Refer to Figure 15

1. Graphic representations of the amplifi er's output confi guration. Inputs (Q) are from Q-SYS,
outputs (A-D) show the amplifi er channels and their confi guration.

2. Text indicating how many channels, and the output confi guration. For possible
confi gurations refer to the Q-SYS help for the CXD-Q Amplifi er component.

3. Status of the amplifi er and Q-SYS design indicating the design and amp are in sync.

4. Status of the amplifi er indicating that action is necessary to synchronize the design
and amplifi er.

5. Action you need to perform to change the amplifi er confi guration. Press the ID button to
the right of the message.

1

2

3

4

5

Q A

Channel Configuration Locked to Design

Design requires 3 Channels: A+B C D

Q A

Q B

4 Channels: A B C D

CHANNEL CONFIGURATION

Q B

4 Channels: A B C D

Q C

Q C

Q D

Q D

Press ID to Accept

Status Screen

Refer to Figure 16

— Figure 15 —

1. DEVICE: This is the hostname (network name) of the amplifi er. A default name is given at the factory, similar to the example. You may change the
name in the Q-SYS Confi gurator.

2. DESIGN: This is the name of the Q-SYS design containing the amplifi er. The amplifi er must
be in a running design to operate.

3. STATUS: Displays the current status of the amplifi er both in text and color. The following is
a list of possible status colors, and some example conditions.

• OK – Green – Audio is good, hardware is good.

• Compromised – Orange – Audio is good but a redundancy mechanism is active (one

LAN down but the other is still up) or a non-fatal hardware problem exists (fans too

1

2

3

4

5

6

DEVICE: My Amplifier Name

DESIGN:

STAT US:

FIRMWARE:

GAIN AB: -27.0 dB GAIN C: 0 dB

STAT US

My Design Filename

OK

4.0.00

GAIN D:

10.0 dB

slow, temperature higher than expected, etc.)

• Fault – Red – Audio is not passing, or hardware is malfunctioning or mis-confi gured

— Figure 16 —

(amplifi er power off, audio streams broken, amplifi er fault, loudspeaker short circuit, etc.)

• Initializing – Blue – In the process of initialization, and design start. Audio is not passed.

TD-000438 -01 -A

10

4. FIRMWARE: The Q-SYS Designer fi rmware version. To update the fi rmware:

a. The version you want to use must be installed on your PC,
b. The amplifi er must be connected to the network, and turned on.
c. Open the Q-SYS design containing the amplifi er and select "Save to Core and Run" from the File menu.
d. The amplifi er Q-LAN processor and any other Q-SYS peripherals in the design are automatically updated.

5. GAIN A - D: Displays the current Gain setting for each channel. If channels are combined, they are displayed together. The green background gives
a graphical indication of the Gain.

LAN A

LAN A / LAN B Screen

Refer to Figure 17

1. Default IP Address. You can change this and the other parameters in Q-SYS Confi gurator.
LAN A is required, and cannot be turned off.

2. Default Netmask.

3. Default Gateway.

4. LAN B is not required, as indicated by empty fi elds in Figure 17.

1
2
3

4

IP ADDRESS:

NETMASK:

GATEWAY:

IP ADDRESS:

NETMASK:

GATEWAY:

192.168.xxx.xxx

255.255.0.0

0.0.0.0

LAN B

— Figure 17 —

Health Screen

Refer to Figure 18

1. FAN RPM – varies depending on the temperature.

2. PSU TEMP – Temperature of the Power Supply Unit.

• 55º C causes a compromised state for the amplifi er.

• 63º C Mutes Audio

3. Channels A&C, and B&D Temp (Heat Sink Temperature)

• Thermal Limiting starts at 69º C, shows a compromised state

1

2

3

4

FAN RPM:

PSU TEMP: 35.3°C

A&C Temp: 35.4°C

B&D Temp: 35.3°C

VRAIL 1: 149

VRAIL 2: -151

• Thermal Shutdown at 80º C

4. Voltage Rails

• CXD4.3Q & CXD4.5Q

» VRail 1 = +147 VDC +/- 5 V typical
» VRail 2 = -147 VDC +/- 5 V typical

• CXD4.2Q

» VRail 1 = +85 VDC +/- 5 V typical
» VRail 2 = -85 VDC +/- 5 V typical

HEALTH

1109

— Figure 18 —

TD-000438 -01 -A

11

Output Screens

Refer to Figure 19

Each output or group of outputs has a dedicated screen. Figure 19 is an example of Output A.

1.

GAIN

– The amount of gain applied to the input signal. Controlled by the GAIN knob on
the front panel of the amplifi er, or the GAIN control in the CXD-Q Output component in
the Q-SYS Design.

2.

INPUT

– The level of the audio signal applied to the CXD-Q Output component in the

1

2

3

4

5

GAIN:

Q-LAN INPUT:

VOLTAGE:

POWER:

HEADROOM:

DAC LIMIT

OUTPUT A

-23.0 dB

-45.0 dB

.777 V

.011 W

-41.3 dB

PROTECT LIMIT

Q-SYS design. The CXD-Q Output component is the connection to the output section of
the amplifi er. This meter reading can be changed from RMS to Peak in the Amplifi er Out

678

component in the Q-SYS design.

3.

VOLTAGE

- The voltage being delivered to the loudspeaker. This reading can be RMS or

— Figure 19 —

Peak depending on the Meter Select setting in the Q-SYS design for the associated channel.

4.

POWER

– The power of the amplifi er / loudspeaker circuit. This reading can be RMS or Peak depending on the Meter Select setting in the Q-SYS

design for the associated channel.

5.

HEADROOM

6.

DAC LIMIT

– The amount of room left before reaching the amplifi er's maximum capabilities.

– When illuminated, this indicates that the signal to the D to A Converter is larger than can be reproduced and a limiter has been

engaged to prevent clipping. This is an indication that the gain structure is not correct.

7.

PROTECT

8.

LIMIT

– When illuminated, this indicates that the channel is in Protect Mode. Usually due to driving too low of an impedance for too long.

– When illuminated, this indicates the amplifi er limiter is active. This occurs if the signal is driving the power, current, or voltage above the

amplifi er rated values or due to thermal limiting.

AB

231

OUTPUT GAINS

-45.0 dB

-45.0 dB

C

-45.0 dB

D

Q-LAN: -8.08 dB

VOLTS: 101 V

Q-LAN:

VOLTS:

Q-LAN:

VOLTS:

-100.0 dB

.014 V

-100 dB

.014 V

4
5

6

— Figure 20 —

Output Gains Screen

Refer to Figure 20

The Output Gains screen provides a quick overview of all outputs and is the screen on which
GAIN adjustments are made.

Use the NEXT or PREV buttons to access this screen or, press one or more of the SEL buttons
to access the screen and make GAIN adjustments for the selected channels.

1. The highlighted background indicates that the Channel is selected by the SEL button.

2. Channel – the channels display according to the confi guration of the amplifi er.

3. Output Gain – the output gain is controlled by the GAIN knob on the amplifi er or with the
Gain control in the CXD-Q Output component in the Q-SYS design.

4. Q-LAN Input Level – the level of the audio signal applied to the CXD-Q Output component
in the Q-SYS design. The CXD-Q Output component is the connection to the output section of the amplifi er.

5. Voltage – The voltage applied to that output.

6. Output B is combined in parallel with Output A, the slot for Output B is removed.

TD-000438 -01 -A

12

GPIO

Connector

Pin

1 3.3 V 100 mA max (power cycle to reset current limiting)

2 GPIO 1 5mA in/out, 3.3V max, 127 resistor in series

3 GPIO 2 5mA in/out, 3.3V max, 127 resistor in series

4 GND Ground

5 GPIO 3 5mA in/out, 3.3V max, 127 resistor in series

6 GPIO 4 5mA in/out, 3.3V max, 127 resistor in series

7 GND Ground

8 GPIO 5 18mA in/out max, 3.3V max, 127 resistor in series

9 RELAY NO

10 RELAY COM

11 RELAY NC

12 GND Ground

13 GPIO 6 18mA in/out max, 3.3V max, 127 resistor in series

14 GPIO 7 18mA in/out max, 3.3V max, 127 resistor in series

15 GND Ground

16 GPIO 8 18mA in/out max, 3.3V max, 127 resistor in series

1 Nominal switching capacity is 30 VDC at 2 A for a total of 60 W maximum. The maximum voltage is 220 VDC if

the current is limited to observe the maximum power rating (60 W).

GPIO # and

Function

1

1

1

Relay Normally Open

Relay Common

Relay Normally Closed

Specifi cations

1
2
3
4
5
6
7
8

— Figure 21 —

9
10
11
12
13
14
15
16

Examples

Button or Contact Closure Potentiometer Q-SYS-Powered LED

GPIO

+3.3 V

GPIO 5-8

Ground

GPIO

Analog In

Ground

— Figure 22 —

10 kΩ

Ground

Works for LEDs up to 18 mA.

Current is limited in the GPIO circuit

by a 127Ω resister in series.

TD-000438 -01 -A

13

Specifi cations

CXD4.2Q CXD4.3Q CXD4.5Q

Channel Confi guration Peak

70 V or 100 V Mode 70 V

100 V

4 Independent Channels
A, B, C, D

8 
4 
2 

2 Channels BTL Bridged
A+B or C+D
Doubles Voltage

2 Channels Parallel
AB or CD
Doubles Current

1 Channel 3CH Parallel
ABC
Triples Current

1 Channel Bridged/Parallel
AB+CD
Doubles Current and Voltage

1 Channel 4CH Parallel
ABCD
Quadruples Current

Typical Distortion

8
4

Maximum Distortion 4–8 1.0% 1.0% 1.0%

8 
4 
2 

8 
4 
2 

8 
4 
2 

8 
4 
2 

8 
4 
2 

0.01–0.03%

0.03–0.06%

1

3

N/A

3

N/A

500 W
700 W
625 W

1200 W
1500 W

4

NR

500 W
950 W

1200 W

500 W
950 W

1800 W

1600 W
2500 W

4

NR

500 W

1000 W

1700 W

5

5

5

5

5

5

Continuous

Frequency Response (8) 20 Hz–15 kHz ±0.2 dB

20 Hz–20 kHz +0.2 dB / -0.7 dB

Noise

Unweighted Output Unmuted
Weighted Output Muted

Gain (+4 dBu setting)
Constant Sensitivity

-101 dB

-109 dB

33.5 dB 35.5 dB 38.5 dB

Damping Factor >150 >150 >150

Q-SYS Analog Signal Inputs Four mic/line, confi gured and routed in Q-SYS Designer; not connected to amplifi er output channels

Input Impedance >10k ohms, balanced or unbalanced >10k ohms, balanced or unbalanced >10k ohms, balanced or unbalanced

Front Panel Controls and Indicators Power • Channel MUTE Buttons • Channel SELECT Buttons • Channel Input Signal and CLIP LED Indicators • Channel Output and

LIMIT LED Meters • NEXT, PREV, ID Buttons • Control Knob • FAULT LED • Pinhole Reset

Rear Panel Controls and Indicators

AC power disconnect switch
LAN A link and activity LEDs
LAN B link and activity LEDs

Rear Panel Connectors

Input
Output (Loudspeakers)
Network
GPIO

Amplifi er and Load Protection

3-pin Euro style (4)
8-pin Euro style
LAN A / LAN B RJ45
16 pin Euro style

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 100-132/200–240

VAC, 50–60 Hz

Dimensions (HWD) 3.5” × 19” × 12”

(89 mm × 482 mm × 305 mm)

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)

Agency Approvals UL, CE, RoHS/WEEE compliant, FCC Class A (conducted and radiated emissions)

1 Peak Power – 20 ms 1 kHz sine burst, all channels driven
2 Continuous Power – EIA 1 kHz 1% THD, all channels driven
3 70V & 100V are available on CXD-Q4.2 only when channels are bridged
4 NR – Not Recommended due to excessive current draw
5

BOLD

indicates optimal confi guration for the load and channel count

3

N/A

3

N/A

400 W
400 W
325 W

800 W
600 W

4

NR

400 W

800 W
800 W

400 W
800 W

1200 W

1500 W

1600 W

4

NR

400 W
800 W

1600 W

2

Peak

1

Continuous

500 W
625 W

900 W
1400 W
1200 W

5

5

5

5

2400 W

4

NR

4

NR

1300 W

2000 W
2500 W

5

5

5

1400 W
2400 W
3500 W

5

5

3500 W
5000 W

4

NR

5

5

1400 W

5

3000 W

5000 W

5

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

Universal Power Supply 100–240 VAC, 50–60 Hz

3.5” × 19” × 16”
(89 mm × 482 mm × 406 mm)

500 W
625 W

625 W
625 W
625 W

1250 W

4

NR

4

NR

115 0 W

1250 W
1250 W

115 0 W
2000 W
2500 W

2500 W
2500 W

4

NR

115 0 W
2500 W

2500 W

2

Peak

1

1000 W
125 0 W

1200 W

2000 W

1600 W

5

5

5

4000 W

4

NR

4

NR

125 0 W

2400 W
4000 W

1400 W
2500 W
4500 W

5

5

4500 W
7500 W

4

NR

1600 W

5

3000 W

5300 W

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

3.5” × 19” × 16”
(89 mm × 482 mm × 406 mm)

Continuous

2

1000 W

125 0 W

115 0 W

125 0 W

625 W

5

5

5

2250 W

4

NR

4

NR

1200 W

2250 W
2100 W

5

5

5

115 0 W

2400 W

4100 W

5

5

4200 W
4200 W

4

NR

5

5

115 0 W

5

2300 W

4200 W

5

TD-000438 -01 -A

14

Heat Loss Charts

Heat losses are the thermal emissions from an amplifi er while it is operating. It comes from dissipated waste power—i.e., real AC power in minus audio
power out. Measurements are provided for various loads at idle, 1/8 of average full power, 1/3 of average full power, and full power, with all channels
driven simultaneously. For typical usage, use the idle and 1/8 power fi gures. This data is measured from representative samples; due to production
tolerances, actual heat emissions may vary slightly from one unit to another. Bridged mono into 8 ohms is equivalent to 4 ohms per channel; into
4 ohms is equivalent to 2 ohms per channel.

BTU/hr kcal/hr

Idle

CXD4.2Q 180 46

CXD4.3Q 225 57

CXD4.5Q 286 72

Load per Channel 8Ω 4Ω 2Ω 25V-70V-100V

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

1/8th Power

CXD4.2Q 432 109 476 120 597 150 nr nr

CXD4.3Q 684 172 794 200 1040 262 nr nr

CXD4.5Q 811 204 1144 288 1124 283 nr nr

1/3rd Power

CXD4.2Q 849 214 873 220 1215 3 06 n r nr

CXD4.3Q 983 248 1261 318 1869 471 nr nr

CXD4.5Q 881 222 1708 430 1737 438 nr nr

Full Power

CXD4.2Q 1352 341 1478 372 2120 534 nr nr

CXD4.3Q 2498 629 2925 737 4198 1058 nr nr

CXD4.5Q 3116 785 5318 1340 4208 1060 nr nr

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.

TD-000438 -01 -A

15

Mailing Address:

t

Q-SYS 24/7 Emergency Support*

QSC, LLC

1675 MacArthur Boulevard

Costa Mesa, CA 92626-1468 U.S.

Main Number: [phone]

World Wide Web: www.qsc.com

Tel: [phone] (U.S./Canada)

Tel: [phone] (non-U.S.)

*Q-SYS 24/7 Support is for Emergency assistance with Q-SYS systems
only. 24/7 support guarantees a call back within 30 min after a message
is left. Please include, Name, Company, Call Back Number and
description of the Q-SYS emergency for prompt call back. If calling during
business hours please use the standard support numbers above.

Q-Sys™ Customer Suppor

Sales & Marketing:

Voice: [phone] or toll free (U.S. only) [phone]

FAX: [phone]

E-mail: [e-mail]

Q-SYS Support Email

[e-mail]

(Immediate email response times not guaranteed)

QSC

Q-SYS™ Customer Support

Application Engineering and Technical Services

Monday - Friday 7 AM to 5 PM PST (Excludes Holidays)

Tel. [phone] (U.S. only)

Technical Services

1675 MacArthur Blvd.

Costa Mesa, CA 92626 U.S.

Tel: [phone] (U.S. only)

Tel. [phone]

Tel: [phone]

FAX: [phone]

© 2016 QSC , LLC. All rights reserved. QSC the QSC logo, and the Q-SYS logo are registered trademarks of QSC , LLC in the U.S. Patent and Trademark offi ce and other

TD-000438 -01 -A

countries. All other trademarks are the property of their respective owners.

http://patents.qsc.com.

16