QSC CXD4.2-xx, CXD4.3-xx, CXD4.5-xx Users Manual

CXD Amplifiers

User Manual

CXD4.2 — 4 Channel, 2000 W Ampliﬁ er

CXD4.3 — 4 Channel, 4000 W Ampliﬁ er

CXD4.5 — 4 Channel, 8000 W Ampliﬁ er

TD-000367-01 -B

*TD-000367-01*

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 (including ampliﬁ ers) that produce heat.

9. 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.

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

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

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

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

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

15. 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.

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.

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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 CXD4.3 and CXD4.5

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 CXD4.2

NOTE:

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.

These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment

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.

RoHS STATEMENT

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

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

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

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。

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.)

Warranty

For a copy of the CXD warranty, visit the QSC website at www.qsc.com

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Introduction

Built for system integrators, the CXD 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 CXD Series consists of three light-weight, 2RU, four-channel ampliﬁ ers with on-board DSP and ﬂ exible channel combining as well as 70V and 100V direct drive. 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.

CXD ampliﬁ ers feature Flexible Ampliﬁ er Summing Technology (FAST). Depending on the model, 2000, 4000, or 8000 Watts of total power can be distributed across one to four outputs. In addition, the CXD4.3 and CXD4.5, can drive 70V or 100V speaker lines directly from any one or all of the four outputs, and the CXD4.2 can drive 70V or 100V speaker outputs from bridged channels. This ﬂ exibility allows CXD Series ampliﬁ ers to drive (for example) two full-range, surface-mounted loudspeakers along with a subwoofer and one 100 V distributed loudspeaker line; or a high-power subwoofer and a bi-ampliﬁ ed full-range loudspeaker; three 70V distributed loudspeaker lines and a subwoofer; or a single very high-power channel to drive monster subwoofers.

The CXD Series ampliﬁ ers use QSC’s third-generation class-D power amp design in combination with a custom power stage utilizing a new output device (4.3 and 4.5 only). In addition, CXD ampliﬁ ers employ the proven PowerLight power supply in conjunction with Power Factor Correction (PFC) (4.3 and 4.5 only) which aligns the current waveform with the AC mains voltage waveform. PFC enables the CXD 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 CXD 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 very high efﬁ ciency.

With four channels of ampliﬁ cation plus signal processing in just 2RUs, the CXD series replaces equipment taking up as much as three times the rack-space.

A single CXD 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 cross-over 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, CXD 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 horn and driver design resulting in exceptional performance.

The CXD also includes manufacturers' recommended tunings for a number of 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.

Whether using the dedicated front panel user interface featuring a 400 x 240 display, rotary encoder and navigation buttons, or the Ampliﬁ er Navigator software on a PC or Mac, the CXD ampliﬁ ers are an ideal ampliﬁ er/processing platform for installations.

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-000350

2. Warning Information Sheet TD-000420

3. CXD Ampliﬁ er

4. IEC AC Power Cord

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

TD-000367 -01 -B

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

7. Euro-style Connector Plug, 3.5 mm, 2-pin (1)

8. Euro-style Connector Plug, 3.5 mm, 3-pin (1)

9. USB Cable (1)

Features

Ampliﬁ er Front Panel

14 15

2 3

4 5 6 7 8 9

— 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 maximum ampliﬁ er output (Blue)

5. Output Channel -20 dB below maximum ampliﬁ er output (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 eight-pin Euro-style connector and associated information are interchanged.

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

1 4 5 6 7 8 102 93

USB

HEARTBEAT GPO

GPI

THIS PRODUCT SHOULD BE SUPPORTED ON ALL FOUR CORNERS WHEN INSTALLED IN A RACK

OUTPUTS TO SPEAKERS

PARALLEL CHANNEL

COMBINING APPLICATIONS

CH AB

SETTINGS CAN BE

CH A

CH B

CH C

CH D

CONFIGURED FOR

70V, 100V AND

200V DIRECT

OUTPUT.

BRIDGED

CH A+B

T1+T3

CH C+D

CH AB+CD

T1 T3

CH CD

CH ABC

CH ABCD

— Figure 2 —

1. USB Type B, four-pin

2. GPO/Heartbeat (output) Euro-style Connector, 3-pin

3. GPI (input) Euro-style Connector, 2-pin

4. Four three-pin Euro-style Connectors

5. One eight-pin Euro-style Loudspeaker Connector

6. Cooling fan

7. AC Power Switch

8. Locking IEC Power Connection

9. Rear Rack-mount Bracket

10. Front Rack-mount Brackets

TD-000367 -01 -B

Installation

The following steps are written in the recommended installation order.

Rack-Mount the Ampliﬁ er

The CXD Series ampliﬁ ers are designed to be mounted in a standard rack-mount unit. The ampliﬁ ers are 2RU high, the CXD4.3 and CXD4.5 are 381 mm (15 in) deep, the CXD4.2 is 229 mm (9 in) deep.

1. Secure the ampliﬁ er in the rack with eight (four for the CXD4.2) screws (not included), 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!:

2 cm clearance.

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

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.

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

The CXD4.3 and CXD4.5 ampliﬁ ers have a Universal power supply 100 – 240 VAC, 50 – 60 Hz, with an IEC locking connector. The CXD 4.2 has a Universal power supply 100 - 132/200-240 VAC, 50 – 60 Hz, with an IEC locking connector.

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

2. Connect the IEC AC cable between the ampliﬁ er rear AC connector and the AC source.

— Figure 3 —

AC Power

NOTE:

audio is present.

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

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

TD-000367 -01 -B

Inputs

Connect the Audio Inputs

Equilibrada

— Figure 4 —

No equilibrada

— Figure 5 —

USB

HEARTBEAT GPO

GPI

ENTRADAS ENRUTABLES

2143

— Figure 6 —

There are four three-pin Euro-style connectors labeled 1 through 4 providing the audio inputs on the CXD Ampliﬁ ers. A single input can be mixed 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 sensitivity of either +4 or +14 dBu.

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

2. Wire the audio line-level source to up to four Euro-style connectors (supplied). You

may use either balanced inputs (Figure 4) or unbalanced inputs (Figure 5).

NOTE:

The CXD 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.

3. Plug the connectors into the appropriate receptacles (ROUTABLE INPUTS 1, 2, 3, 4)

Figure 6 and Figure 7.

— Figure 7 —

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.

GPIO/Heartbeat

There are two 3.5 mm Euro-style connectors on the rear of the ampliﬁ er.

• Heartbeat — The heartbeat output supplies a square wave signal of 1 Hz @ 3.3 V. This signal can connect to a life-safety system to monitor the go/no-go condition of the ampliﬁ er. The ampliﬁ er must be completely incapable of producing output for the heartbeat signal to stop. A missing heartbeat alerts the life-safety system of the disabled condition. A user-initiated condition such as muting the outputs, placing the ampliﬁ er in Standby mode, or placing the ampliﬁ er in Mute All mode, does not stop the heartbeat.

• GPO — The GPO can be triggered (High or Low ﬂ ag) by one of the following faults:

◦ All Faults ◦ Thermal Limiting ◦ Impedance (selectable impedance boundaries)

• GPI — The GPI Input allows you to do one of the following from a remote location:

◦ Put the ampliﬁ er into Standby or Run mode, ◦ Mute or unmute all outputs, or ◦ Recall one of two Presets

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Outputs

The CXD 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 terminals, controlled by relays, change accordingly. Use the diagrams shown in

Select the Output Conﬁ guration

The ﬁ rst step in conﬁ guring your ampliﬁ er is to select a Preset based on the loudspeakers being connected to the ampliﬁ er. The Preset Name is representative of the conﬁ guration. You can select a factory preset, and then adjust the parameters as needed, then save the conﬁ guration as a userdeﬁ ned preset. In addition, you can use the "Preset Wizard" on page 15 to create presets from one of the basic channel combinations. When the conﬁ guration is changed, all four channels are automatically muted.

Figure 9 thru Figure 17 as a reference for wiring the loudspeakers.

F1: A B C D

F7: ABC D

ABC

Current Preset Name

Selected Preset Name Input Mixer

Frequency Range color

Output Conﬁ guration

Input number

Sub-woofer

Low-Frequency

Mid Frequency

High-Frequency

Full Full Range

Frequency Range Color Codes

— Figure 8 —

WARNING!:

1. Turn the AC Mains power switch on the back of the ampliﬁ er to on. The ampliﬁ er starts in the Run mode.

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

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.

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

TD-000367 -01 -B

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

ABCD Parallel

— Figure 9 —

F8: AB+CD

AB+CD

AB Parallel Bridged with CD Parallel

— Figure 10 —

Two-Channel Conﬁ gurations

F6: A+B C+D

A+B

C+D

A+B Bridged C+D Bridged

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F5: AB C+D

C+D

— Figure 11 —

AB Parallel C+D Bridged

— Figure 12 —

F4: AB CD

AB Parallel CD Parallel

F7: ABC D

ABC

— Figure 13 —

ABC Parallel D Single

— Figure 14 —

Three-Channel Conﬁ gurations

F3: A+B C D

A+B Bridged C Single D Single

MMM

A+B C D

— Figure 15 —

F2: AB C D

— Figure 16 —

AB Parallel C Single D Single

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+ 23 hidden pages

QSC CXD4.2-xx, CXD4.3-xx, CXD4.5-xx Users Manual

Specifications and Main Features

Frequently Asked Questions

User Manual