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Brand : QSC

Model : CXD4.5

Category : Receiver

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USER MANUAL CXD4.5 QSC

The term “WARNING!” indicates instructions regarding personal safety. If the instructions are not followed the result may be bodily injury or death. The term “CAUTION!” indicates instructions regarding possible damage to physical equipment. If these instructions are not followed, it may result in damage to the equipment that may not be covered under the warranty. The term “IMPORTANT!” indicates instructions or information that are vital to the successful completion of the procedure. The term "NOTE" is used to indicate additional useful information. The intent of the lightning ﬂash with arrowhead symbol in a triangle is to alert the user to the presence of un-insulated "dangerous" voltage within the product's enclosure that may be of sufﬁcient magnitude to constitute a risk of electric shock to humans. The intent of the exclamation point within an equilateral triangle is to alert the user to the presence of important safety, and operating and maintenance instructions in this manual.

Keep these instructions.

Follow all instructions.

Do not use this apparatus near water.

Clean only with a dry cloth.

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

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

Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not ﬁt into your outlet, consult an electrician for replacement of the obsolete outlet.

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

Only use attachments/accessories speciﬁed by the manufacturer.

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

Refer all servicing to qualiﬁed service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.

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

Adhere to all applicable, local codes.

Consult a licensed, professional engineer when any doubt or questions arise regarding a physical equipment installation.3 EN EN TD-000367-00-A 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 CXD4.2, CXD4.3 and CXD4.5 ampliﬁers are in compliance with European Directive 2002/95/EC – Restriction of Hazardous Substances (RoHS). The QSC CXD4.2, CXD4.3 and CXD4.5 ampliﬁers 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 Ampliﬁers

(PCB Assemblies) X O O O O O

(Chassis Assemblies) X O O O O O 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.)4 EN EN TD-000367-00-A Warranty (USA only; other countries, see your dealer or distributor) QSC Audio Products 3 Year Limited Warranty QSC Audio Products, LLC (”QSC”) guarantees its products to be free from defective material and/or workmanship and will replace defective parts and repair malfunctioning products under this warranty when the defect occurs under normal installation and use, provided the unit is returned to our factory, one of our authorized service stations or an authorized QSC International Distributor via pre-paid transportation with a copy of proof of purchase (i.e., sales receipt). This warranty provides that the examination of the return product must indicate, in our judgment, a manufacturing defect. This warranty does not extend to any product which has been subjected to misuse, neglect, accident, improper installation, or where the date code has been removed or defaced. QSC shall not be liable for incidental and/or consequential damages. This warranty gives you speciﬁc legal rights. This limited warranty is freely transferable during the term of the warranty period. The warranty on QSC products is NOT VALID if the products have been purchased from an unauthorized dealer/online e-tailer, or if the original factory serial number has been removed, defaced, or replaced in any way. Damage to, or loss of any software or data residing on the product is not covered. When providing repair or replacement service, QSC will use reasonable efforts to reinstall the product’s original software conﬁguration and subsequent update releases, but will not provide any recovery or transfer of software or data contained on the serviced unit not originally included in the product. Customers may have additional rights, which vary from state to state or from country to country. In the event that a provision of this limited warranty is void, prohibited or superseded by local laws, the remaining provisions shall remain in effect. The QSC limited warranty is valid for a period of three (3) years from date of purchase in the United States and many (but not all) other countries. 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: 1-800-854-4079 within US and Canada, +1-714-754-6175 international, Email: warranty@qscaudio.com, Website: www.qsc.com.5 EN EN TD-000367-00-A Introduction Built for system integrators, the CXD series ampliﬁers provide multi-channel ampliﬁcation with built-in DSP and enough power to drive wide varieties of speaker systems with optimal energy efﬁciency. The CXD Series consists of three light-weight, 2RU, four-channel ampliﬁers with on-board DSP and ﬂexible channel combining as well as 70V and 100V direct drive. These ampliﬁers not only provide the power and processing to make your system perform better, they offer outstanding efﬁciency ensuring that energy costs are kept to a minimum over the life of the installation. CXD ampliﬁers feature Flexible Ampliﬁer Summing Technology (FAST). Depending on the model, 1600, 2500, or 5000 Watts of total power can be distributed across one to four outputs. 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. This ﬂexibility allows CXD Series ampliﬁers 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-ampliﬁed 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 ampliﬁers use QSC’s third-generation class-D power amp design in combination with a custom power stage utilizing a new output device. In addition, CXD ampliﬁers employ the proven PowerLight power supply in conjunction with Power Factor Correction (PFC) which aligns the current waveform with the AC mains voltage waveform. PFC enables the CXD Series ampliﬁers to draw current from the wall in a more efﬁcient and controlled manner resulting in very high power from a single standard AC breaker. Additionally, the CXD Series ampliﬁers offer multi-stage sleep modes saving energy when possible without sacriﬁcing performance. The result is an exceptionally powerful and ﬂexible platform that offers low weight and efﬁciency. With four channels of ampliﬁcation plus signal processing in just 2RUs, the CXD series replaces equipment taking up as much as three times the rack-space. A single CXD Series ampliﬁer is a capable and sophisticated loudspeaker processor. Integration of processing and ampliﬁcation means that the DSP knows exactly what the ampliﬁer is doing so dynamics processing can be far more accurate and effective. This approach employs both RMS and Peak Limiters that allow the ampliﬁer and loudspeaker to produce more output without being pushed to distortion or destruction. The on-board DSP offers four channels of cross-over ﬁlters, parametric EQ/Low-shelf/High-shelf, alignment delay and dynamics processing — everything needed to optimize a loudspeaker system. Additionally when using QSC loudspeakers, CXD ampliﬁers provide Intrinsic Correction™, a combination of ﬁltering, limiting and loudspeaker knowhow that was ﬁrst developed for QSC's WideLine line-array loudspeakers. Intrinsic Correction compensates for the non-linearity in array and horn design resulting in exceptional performance. The CXD also includes manufacturers' recommended tunings for the most popular passive loudspeakers. A system setup wizard helps you select the right preset, or select one of the 20 conﬁguration templates and create tunings that you can save in the user preset library. With a dedicated front panel user interface, complete with LED meters and indicators, a 400 x 240 TFT color display, a rotary encoder and navigation buttons, the CXD ampliﬁers provide an intuitive means to control the system. Unpacking There are no special unpacking instructions. You may want to keep the shipping material for the unlikely event that the ampliﬁer should need returning for service. Package Contents

4. IEC AC Power Cord

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

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)

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

Ampliﬁer Rear Panel NOTE: The CXD4.3, and CXD4.5 models have a different rear panel conﬁguration than the CXD4.2 rear panel. The difference is that the position of the fan and the eight-pin Euro-style connector and associated information are interchanged. — Figure 2 — CH ABT1+T3+T2-T4-CH CDT5+T7+T6-T8-CH ABC

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

8. Locking IEC Power Connection

9. Rear Rack-mount Bracket (CXD4.3 and CXD4.5)

10. Front Rack-mount Brackets7

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

The power button is not illuminated.

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

If GPI is enabled, the Off Mode button is disabled. Run Mode

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

The power button is illuminated blue.

The ampliﬁer is fully operable; audio can pass.

If GPI is enabled, the Run Mode button is disabled. Standby Mode

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

The power button illuminates solid red.

The front panel LCD is off.

The ampliﬁer is not operable; audio will not pass.

If GPI is enabled, the Standby Mode button is disabled. Mute All Mode

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

The power button ﬂashes red.

The outputs are muted and ampliﬁers are off.

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

Navigates into the menu structure

Enters the edit mode for adjusting parameters

Conﬁrms the changes you make, and exits the edit mode. EXIT Button

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

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

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

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

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

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

The Gain button illuminates green when selected. SEL Buttons

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

Illuminates red when the Limiter is engaged. -10 and -20 LEDs

Indicates the output level of the channel. CLIP LEDs

Illuminates red when the input signal is being clipped. SIG LEDs

Illuminates blue when a signal is present. ENTER EXIT HOME

LIM -10 & -20 CLIP SIG8 EN EN TD-000367-00-A CXD Ampliﬁer Signal Flow Screen Types — Figure 5 — Informational Informational screens, like the HOME screen, are designed to provide you with a good amount of useful information at a glance. F1: A B C D Full +1.5 dBA - FR+1.5 dBC - FR Full +1.5 dBD - FR Full 121 V 7.2 AAC Voltage: AC Current:Home (Press HOME for more information)+3.5 dBB - FR Full Amp Status:

Preset # and Configuration Location and breadcrumbs Channel Configuration and Gain AC Voltage and Current Amplifier Status — Figure 6 — Preset Recall and Save Menu PRESETS INPUT S F1: A B C D Preset # and Configuration Location and breadcrumbs Current Menu Selection Empty area indicates no selections above (CCW). Next Menu selection below (CW) 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. — Figure 7 — Parameter Editing Parameter editing screens allow you to select, edit, and conﬁrm changes for various system parameters. Use the ENTER button to edit and conﬁrm changes to parameters. Use the Master Control knob to select parameter, and make adjustments. Use the EXIT button to exit the edit mode without saving changes. Gain -7.0 dB Gn/Pol F1: A B C D Polarity POL+ Output 20 dB-60 dB Gain -7.0 dB Parameter being edited Parameter not selected Parameter selected — Figure 4 — Input Settings Output Processing Gain Gain Gain Gain

Set by Preset or Wizzard RMS Peak Limiter RMS Peak Limiter RMS Peak Limiter RMS Peak Limiter Low- pass Filter Low- pass Filter Low- pass Filter High- pass Filter High- pass Filter High- pass Filter High- pass Filter9 EN EN TD-000367-00-A Menu Tree *For QSC Line Arrays only Presets Preset WizardPreset RecallPreset Save Inputs Input SensitivityInput Gain Outputs Mixer w/Noise & ToneMode (Lo-Z, 70V, 100V)Save SpeakerLoad SpeakerArray Correction*LimiterDelay PEQ CrossoverSpkr Processing Utilities DisplayStatusAmp IDPasswordLockout GPIO About Presets The CXD ampliﬁers are preset driven. In order to get the most out of the ampliﬁers, an understanding of how presets work is essential. A Preset, in the context of the CXD ampliﬁers, is a combination of ampliﬁer conﬁguration (inputs and outputs), DSP and loudspeaker assignments. When a preset is recalled it can change the output routing and wiring and/or any of the DSP settings. The CXD ampliﬁers come with 20 unchangeable factory presets, and 50 user-deﬁned presets. The factory presets are designed to be starting points for creating the presets you need for your particular installation. Factory presets F1: thru F9: have no DSP or loudspeaker assignments, only output conﬁgurations. Factory presets F10: thru F20: include basic settings along with the output conﬁgurations. Creating User-deﬁned Presets A preset can be created in two ways, the ﬁrst is to modify an existing preset, then save this as a new preset. The second is to use the Preset Wizard to create a Preset from scratch. Save As a New Preset After selecting a starting preset, navigate through the Input and Output menus to select and modify the parameters needed for your system. After modifying the parameters for each channel, return to the Preset menu and save your work. If you started with a user-deﬁned preset, you can update the preset you started with using the SAVE function or, you can use the SAVE AS function. Preset Wizard The Preset Wizard simpliﬁes the preset creation process, and allows you to create a preset from the ground up. The Preset Wizard provides a mechanism for you to select the desired power and load. Based on these selections, the best ampliﬁer conﬁguration is selected and you are then allowed to select and assign loudspeakers to each output. NOTE: By default, all 50 of the user-deﬁned presets are conﬁgured the same as factory preset F1. Either method described above "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.10 EN EN TD-000367-00-A Installation The following steps are written in the recommended installation order. Mount the CXD Ampliﬁer The CXD Series ampliﬁers are designed to be mounted in a standard rack-mount unit. The ampliﬁers are 2RU high, the CXD4.3 and CXD4.5 are 381 mm (15 in) deep, the CXD4.2 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!: Be sure that nothing is blocking the front or rear ventilation openings, and that each side has a minimum of 2 cm clearance. 1. Use the proper fastening hardware (not included) to secure the ampliﬁer in the rack. The CXD4.3 and CXD4.5 have four front and four rear mounting tabs. The CXD4.2 has four front mounting tabs. 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 ampliﬁer. Use caution not to touch these contacts. Turn off the AC Mains disconnect switch prior to making any connections. The CXD ampliﬁers have a Universal power supply 100 – 240 VAC, 50 – 60 Hz, with an IEC locking connector.

1. Connect the IEC AC cable between the ampliﬁer rear AC connector and the AC source.

AC Power NOTE: If the ampliﬁer has no audio for ﬁfteen minutes, the ampliﬁer stops switching. The ampliﬁer returns to the Run mode the instant audio is present.” When you remove power from the ampliﬁer, then re-apply the power, the ampliﬁer returns to its last state. — Figure 8 — — Figure 9 —11 EN EN TD-000367-00-A Inputs Connect the Audio Inputs — Figure 10 — HEARTBEAT GPO GPI USB ROUTABLE INPUTS

— Figure 11 — Unbalanced — Figure 12 — Balanced There are four three-pin Euro-style connectors labeled 1 through 4 providing the audio inputs on the CXD Ampliﬁers. 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. Connect the input source wires to the Euro-style connectors as shown. (Figure 11 and

3. The CXD Series has the capability of routing the inputs to different outputs. Be sure that

the connections you make here match the conﬁguration of the ampliﬁer.

4. Plug the Euro-style audio connectors into the appropriate inputs on the rear of

the ampliﬁer. USB (Optional) The USB cable (supplied) connects to a Mac or PC for use with the Ampliﬁer Navigator software. You can update the ampliﬁer ﬁrmware, save and deploy conﬁguration ﬁles, and more. Refer to the Ampliﬁer Navigator online help for details. NPIO/Heartbeat There are two 3.5 mm Euro-style connectors on the rear of the ampliﬁer.

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 ampliﬁer. The ampliﬁer 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 ampliﬁer in Standby mode, or placing the ampliﬁer in Mute All mode, does not stop the heartbeat.

GPO — The functionality of this general purpose output pin has not been determined as of the release of this document.

GPI — This input is used to put the ampliﬁer into Standby from a remote location. When the GPI is enabled in the Utilities menu, then is shorted to ground, the ampliﬁer goes into the Standby mode. The front-panel power button is disabled when GPI is enabled. — Figure 13 —

EN EN TD-000367-00-A Outputs The CXD ampliﬁers have four conﬁgurable outputs. You can set the power, combine outputs (bridged and parallel), and adjust the DSP for each output. When the output conﬁguration of the ampliﬁer changes, the output terminals, controlled by relays, change accordingly. Use the diagrams shown in Figure 15 thru Figure 23 as a reference for wiring the loudspeakers. Select the Output Conﬁguration The ﬁrst step in conﬁguring your ampliﬁer is to select a Preset based on the loudspeakers being connected to the ampliﬁer. You can use a factory preset, and then adjust the parameters as needed, then save the conﬁguration as a user-deﬁned preset. In addition, you can use the "Preset Wizard" on page 16 to create presets from the ground up. When the conﬁguration is changed, all four channels are automatically muted. — Figure 14 — F1: A B C DF7: ABC D

Input numberSub-wooferMid-FrequencyFull Range High-Frequency Low-FrequencyCurrent ConfigurationSelected ConfigurationInput MixerOutput ConfigurationFrequency Range colorFrequency Range Color Codes WARNING!: When the AC Power is on, there is a potential of having dangerous voltage at the output terminals on the rear of the ampliﬁer. Use caution not to touch these contacts. Turn off the AC Mains disconnect switch prior to making any connections. IMPORTANT: QSC recommends that you connect jumpers between the output terminals where the terminals are the same points electrically. When conﬁguring your ampliﬁer, there are going to be some loudspeaker connections that are noted as being "electrically the same point". In Figure 15, all four channels are in parallel with the "electrically the same" terminals jumpered as recommended. In addition, you can connect one loudspeaker to each of the four output channel terminals, and the four loudspeakers are in parallel; in this case you would not need to jumper the terminals. You can connect four loudspeakers to one channel's output terminals (i.e. T1 and T2), and the four loudspeakers are in parallel; in this case you would want to jumper the terminals. In all of the examples below, the "electrically the same" terminals are shown with jumpers installed.

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

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

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

The following is a list of conﬁgurations for 1, 2, 3, and 4-channel outputs. This is not an exhaustive list, but is intended to give you an idea of what is available and how the outputs would be wired. One-Channel Conﬁgurations — Figure 15 — F9: ABCDF9: ABCDABCD Parallel

ABCD The following are electricallythe same pointT1+, T3+, T5+, and T7+T2-, T4-, T6-, and T8-13 EN EN TD-000367-00-A — Figure 16 — F8: AB+CD F8: AB+CD AB Parallel Bridged with CD Parallel The following are electricallythe same pointT1+and T3+T5- and T7-

AB+CD Two-Channel Conﬁgurations — Figure 17 — F6: A+B C+D F6: A+B C+D A+B Bridged C+D Bridged A+B C+D M M — Figure 18 — F5: AB C+D F5: AB C+D AB Parallel C+D Bridged

C+D M M The following are electricallythe same pointT1+ and T3+T2- and T4- — Figure 19 — F4: AB CD F4: AB CD The following are electricallythe same pointT1+ and T3+T5+ and T7+T2- and T4-T6- and t8- AB Parallel CD Parallel

M M The following are electricallythe same pointT1+, T3+, and T5+T2-, T4-, and T6- ABC Parallel D Single Three-Channel Conﬁgurations — Figure 21 — F3: A+B C D F3: A+B C D A+B Bridged C Single D Single A+B C D M M M — Figure 22 — F2: AB C D F2: AB C D AB Parallel C Single D Single

The following are electricallythe same pointT1+ and T3+T2- and T4- Four-Channel Conﬁguration — Figure 23 — F1: A B C D F1: A B C D A Single B Single C Single D Single M M A B

D15 EN EN TD-000367-00-A Connect the Loudspeakers WARNING!: When the AC Power is on, there is a potential of having dangerous voltage at the output terminals on the rear of the ampliﬁer. Use caution to not touch these contacts. Turn off the AC Mains disconnect switch prior to making any connections.

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

2. Connect the loudspeaker wiring to the 8-pin Euro-style connector. Refer to Figure 15

thru Figure 23. When combining channels, QSC recommends that you connect jumpers between the electrically same output terminals. Refer to Figure 15 and the WARNING above the ﬁgure.

3. Install the Euro-style connector onto the rear of the ampliﬁer as shown in Figure 24.

4. Use a Phillips screwdriver to secure the connector.

AC Power On After connecting the outputs to the loudspeakers, you may turn the ampliﬁer on. 1. Make sure the output gain settings for all audio-source devices (CD Players, Mixers, Instruments, etc.) at the lowest output (max attenuation).

2. Turn on all audio sources.

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

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

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

Step 2 — Select Output Channel for Speaker Assignment

Loudspeaker assignment is optional, you can assign a loudspeaker to one or more channels, or none at all. When you are finished setting the Impedance and Power for each output, continue to scroll to access the SPEAKERS tab. To Assign a loudspeaker, press Continue to Step 3. Scroll to select Output channel ENTER Step 3 — Select Speaker Type for Channel

SAVE New Preset NameC o n f i g - AOUTPUTS SPEAKERS SAVEScroll to the Save screenTo edit User Preset number, pressENTERWhen you have finished selecting loudspeakers, continue to scroll to access the SAVE tab.Turn to adjust parameterTo confirm, pressENTER Create New Preset from an Existing Preset To create a preset from an existing preset, recall the preset with the desired output conﬁguration, modify the Input parameters, Output parameters, then save the preset. In addition, you can save the preset as you are going thru the creation process. Recall a Preset A Preset includes the output conﬁguration, input parameters, and loudspeaker proﬁles (DSP, load, and assignments). There are 20 factory presets that can be recalled, but not overwritten. Factory presets F1: Conﬁg thru F9: Conﬁg contain output conﬁgurations only. Factory presets F10: thru F20: contain the output conﬁgurations and basic DSP for the conﬁgurations. There are 50 user presets that can be recalled and overwritten.

HOME > PRESETS > PRESET RECALL > ENTER

Step 1 — Select Preset A B C D M M M M F1: A B C D F1: A B C D Indicates more Presets Input Sub MF FullHFLF Scroll to desired Preset 20 Factory, 50 User-defined Step 2 — Conﬁrm Selection F1: A B C D F18: 3-Way Press ENTER to confirm selection A+B C D M M M The message at the bottom changes to: “Recalling Preset now...” You may hear relays clicking To conrm the selection, press ENTER To select the Preset conguration, press ENTER18 EN EN TD-000367-00-A Set up the Inputs NOTE: Changes made to input levels are in real time.

Scroll to select (+14 or +4 dBu) (The background turns to green.) To confirm selection, press ENTER SEL To move to the next input, press Repeat procedure for remaining input channels.

Scroll to select (-100 thru 20 dB) (0.1 dB increments) ENTER To confirm selection, press SEL To move to the next input, press Repeat procedure for remaining input channels. Set up the Outputs NOTE: Changes made to outputs are in real time. Mixer The CXD ampliﬁers are equipped with an internal mixer that allows you to adjust the signals from each input to each of the four outputs. Figure 26 is a diagram of the Mixer for Output Channel A.

The default setting for the Input Gain is 0.0 dB, and is set in the INPUTS section.

Each output channel has four inputs, each controlled by a Mixer Gain.

The Input Gain and Mixer Gain are cumulative. For example, if you set the Input Gain to +2.0 dB, and the Mixer Gain to -5.0 dB, the resulting output is -3.0 dB As a default one channel is mixed to each output: 1 - A, 2 - B, 3 - C, 4 - D, all other input channels are set to -100. Adjusting an Input Gain changes that channel's input to the mixers of all channels. Changing a Mixer Gain affects only that input for the selected output channel. — Figure 26 — Input 1 Input 2 Input 3 Input 4 Output

Step 2 — Select the Output Mode F1: A B C D Outputs > Mode MODE SELECT Mode: Press ENTER to confirm Output Low-Z, 70V, 100V Low-Z Scroll to select Low-Z, 100V, or 70V ENTER To confirm selection, press Loudspeaker Processing The Speaker Processing section allows you to make adjustments to the Crossover, EQ, Delay, Limiter, and QSC Array details for each output channel. In addition, you can load a pre-deﬁned loudspeaker then make any adjustments needed, and save the changes as a user-deﬁned loudspeaker. Depending on the loudspeaker selection, various parameters are not available for adjustment. When you make adjustments, you are making them in real time. If audio is passed while making changes, it is affected by the change. The following instructions are not all in menu order, and all are optional. Repeat the following procedure for each output channel as necessary. Load Speaker Proﬁle A loudspeaker proﬁle includes all the DSP and loudspeaker characteristics available in the SPKR PROC section. When you LOAD a loudspeaker, you are loading all of the DSP and characteristics of that loudspeaker. You can start by loading a loudspeaker and then make modiﬁcations and save your new proﬁle, or you can build the proﬁle without loading a loudspeaker, and then save it as a new proﬁle. If you load a QSC loudspeaker, the ampliﬁer is set for that speciﬁc loudspeaker and some parameters may be locked out because they are set to their optimal value by the Intrinsic Correction Calculator, and should not be adjusted. The CXD comes with a number of supported loudspeakers from other manufacturers. Refer to the list under "Supported Loudspeakers" on page 27. There may be additions to this list in the futrue that can be loaded with ﬁrmware updates. NOTE: If you make changes to any of the loudspeaker processing parameters, and then LOAD a loudspeaker proﬁle, all the changes you made are overwritten.20 EN EN TD-000367-00-A HOME > OUTPUTS > SPKR PROC > LOAD SPKR > ENTER Step 1 — Load an Existing Loudspeaker for the Selected Output

HPF F1: A B C D Type BWrth Output

HOME > OUTPUTS > SPKR PROC > PEQ > BAND 1, 2, 3, 4, OR 5 > ENTER The graph is a composite of all ﬁve bands. Each band has a full range of 20 Hz to 20 kHz. Step 1 — Set the EQ Type Parametrc Band 1 F1: A B C D Gain -35 dB Output 20 dB-60 dB Freq

NOTE: SpkrPwr maximum output depends on the ampliﬁer and the output conﬁguration you select. The maximum for separate channels is 1250 W, a single combined channel (ABCD or AB+CD) can be up to 5000 W depending on the ampliﬁer. Step 2 — Set the AUTO Mode Parameters F1: A B C D Output

AUTO SpkrPwr 200W SpkrImp

Type Med Type: Aggressive Medium MildSpkrPwr: 10.0 W to 1250 KWSpkrImpd: 2.0 Ω to 32.0 Ω Scroll to select (Type, SpkrPwr, SpkrImp) Turn to adjust parameter ENTER To edit, press To confirm, press ENTER EXIT To exit, press 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.

Step 1 — Set Splay Angle and Number of Boxes in the Array F1: A B C D Output

Angle: 0.0˚ to 90.0˚ Boxes #: 0 to 24 Splay Angle: Total cumlative angle of the array. Array Length: Total number of boxes in the array. Scroll to select (Angle or Boxes#) Turn to adjust parameter ENTER To edit, press To confirm, press ENTER EXIT To exit, press23 EN EN TD-000367-00-A HOME > OUTPUTS > SPKR PROC > SAVE SPKR > ENTER When you Save a speaker proﬁle, you are saving all of the Output settings currently active for the channel. The new proﬁle you save does not need to be Loaded, it is already active. Step 1 — Save a Loudspeaker with Custom Load Proﬁle

Output Data: AB + CD 16.0Nominal Imped: Band: 2-Way LFPower Rating:Enter Speaker Info After confirming settings, Scroll to SAVE Nominal Impedance andPower Rating are the nominalsettings for a single loudspeakerof this type. Scroll to select (Band, Nominal Imped, Power Rating) Turn to adjust parameter ENTER To edit, press To confirm, press ENTER Step 2 — Name the Loudspeaker Proﬁle Press ENTER to edit name SAVE Speaker Profile NameM y S p k r SAVE SPEAKERSABOUT To add Speaker Profile Name, press ENTERScroll to desired letter position pressENTERTurn to select desired character pressENTERWhen finished, scroll to SAVE pressENTERUp to 21 charactersA - Z / a - z / 0 - 9 / _ / - / spaceIndicates “SpeakerProfile Name” is selectedIndicates editing Save the Preset After modifying the Inputs and Outputs for all channels, save the current settings as one of the 50 user-deﬁned presets (U1: thru U50:). Each of the user presets, by default, is the same as factory preset F1: A B C D, so when you save the preset you are "overwriting" the preset currently in that numbered position. If you started by recalling a factory preset, you must use the SAVE AS feature. If you started with a user-deﬁned preset, you can overwrite the preset you started with using the SAVE feature, or use the SAVE AS feature to overwrite a different user preset. HOME > PRESETS > PRESET SAVE> SAVE AS > ENTER Step 1 — Save a New Preset - Select and Edit Preset Number Edit preset number or press EXIT U1: A B C D User Preset Number:

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 as you work on the preset. Step 1 — Overwrite Preset Press ENTER to save preset U1: A B C D SAVE To save, press To exit without saving, press EXIT ENTER To confirm the save, press ENTER25 EN EN TD-000367-00-A Utilities The Utilities section provides the following ampliﬁer information and functionality:

HOME > UTILITIES > STATUS > ENTER

Check the Ampliﬁer's Health

CONFIRM Current Password:Q S CM Y p a s w os rNew Password: Press ENTER Scroll to CONFIRM To enter “Current Password:”, press ENTER With the first letter position selected, press ENTER Turn to select desired character press ENTER When you complete the current password, the “New Password:” is automatically selected Repeat the procedure for the “New Password:” The default password for all ampliers is QSC – all uppercase. The password can be up to 10 characters long, and contain, A — Z a — z 0 — 9 _ - space26 EN EN TD-000367-00-A

HOME > UTILITIES > LOCKOUT > ENTER

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

CONFIRM Enter Password: m y p a s w os r To lock or unlock the amplifier, press ENTER With “Enter Password:” selected, press ENTER With the first letter position selected press ENTER Scroll to desired character press ENTER When you complete the password correctly, CONFIRM is automatically selected. NPIO Connections Step 1 — Connect 3-pin and 2-pin Euro-style Connectors on the Back Panel of the Ampliﬁer Heartbeat GPO GPI Heartbeat — 1 Hz square wave @ 3.3 V output NPO — Functionality is to be added. NPI — Standard logic trigger with 1.5 V threshold. Short pin 1 to ground to put ampliﬁer in Standby mode. GP Input must be Enabled. (Switch is not included.)

CXD4.2 CXD4.3 CXD4.5

1 - 1.0 kHz sine wave, 1% THD, 1 channel driven29

EN EN TD-000367-00-A Heat Loss Charts Heat losses are the thermal emissions from an ampliﬁer 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 ﬁgures. 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 CXD 4.3 225 57 CXD 4.5 286 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 CXD 4.3 684 172 794 200 1040 262 794 200 CXD 4.5 811 204 1144 288 1124 283 1144 288 1/3rd Power CXD 4.3 983 248 1261 318 1869 471 1261 318 CXD 4.5 881 222 1708 430 1737 438 1708 430 Full Power CXD 4.3 2498 629 2925 737 4198 1058 2925 737 CXD 4.5 3116 785 5318 1340 4208 1060 5318 1340 Idle Thermal loss at idle or with very low signal level. 1/8 Power Thermal loss at 1/8 of full power is measured with pink noise. It approximates operating with music or voice with light clipping and represents the ampliﬁer's typical "clean" maximum level, without audible clipping. Use these ﬁgures for typical maximum level operation. 1/3 Power Thermal loss at 1/3 of full power is measured with pink noise. It approximates operating with music or voice with very heavy clipping and a very compressed dynamic range. Full Power Thermal loss at full power is measured with a 1 kHz sine wave. However, it does not represent any real-world operating condition.Mailing Address: QSC Audio Products, LLC 1675 MacArthur Boulevard Costa Mesa, CA 92626-1468 USA Telephone Numbers: Main Number: (714) 754-6175 Sales & Marketing: (714) 957-7100 or toll free (USA only) (800) 854-4079 Customer Service: (714) 957-7150 or toll free (USA only) (800) 772-2834 Facsimile Numbers: Sales & Marketing FAX: (714) 754-6174 Customer Service FAX: (714) 754-6173 World Wide Web: www.qsc.com E-mail: info@qscaudio.com service@qscaudio.com © 2013 QSC Audio Products, LLC. All rights reserved. QSC and the QSC logo are registered trademarks of QSC Audio Products, LLC in the U.S. Patent and Trademark ofﬁce and other countries. All other trademarks are the property of their respective owners. http://patents.qsc.com.Amplificadores CXD Manual del usuario CXD4.2 — Amplificador de 4 canales y 1600 W CXD4.3 — Amplificador de 4 canales y 2500 W CXD4.5 — Amplificador de 4 canales y 5000 W TD-000367-02-A *TD-000367-02*2 TD-000367-02-A ES ES

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

HPF F1: A B C D Type BWrth Output

NXA4.2 NXA4.3 NXA4.5

C+D M M The following are electrically the same pointT1+ and T3+T2- and T4- — Illustration 19 — F4: AB CD F4: AB CD The following are electrically the same pointT1+ and T3+T5+ and T7+T2- and T4-T6- and t8- AB Parallel CD Parallel

M M The following are electricallythe same pointT1+, T3+, and T5+T2-, T4-, and T6- ABC Parallel D Single Conﬁgurations 3 canaux — Illustration 21 — F3: A+B C D F3: A+B C D A+B Bridged C Single D Single A+B C D M M M — Illustration 22 — F2: AB C D F2: AB C D AB Parallel C Single D Single

The following are electrically the same pointT1+ and T3+T2- and T4- Conﬁgurations 4 canaux — Illustration 23 — F1: A B C D F1: A B C D A Single B Single C Single D Single M M A B

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

Scroll to select (+14 or +4 dBu) (The background turns to green.) To confirm selection, press ENTER SEL To move to the next input, press Repeat procedure for remaining input channels.

HPF F1: A B C D Type BWrth Output

CONFIRM Change Amp ID to:Serial #: 123abc Amp ID: my amp IDm y a m p I D Press ENTER Scroll to CONFIRM To edit “Change Amp ID to:”, press ENTER Scroll to desired letter position press ENTER Turn to select desired character press ENTER Up to 21 characters A - Z / a - z / 0 - 9 / _ / - / space Indicates “New Preset Name” is selected Indicates editing When you are finished, press EXIT

C+D M M The following are electrically the same pointT1+ and T3+T2- and T4- — Abbildung 19 — F4: AB CD F4: AB CD The following are electrically the same pointT1+ and T3+T5+ and T7+T2- and T4-T6- and t8- AB Parallel CD Parallel

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

HPF F1: A B C D Type BWrth Output

CXD4.2 CXD4.3 CXD4.5

(PCB Assemblies) X O O O O O

Preset # and Configuration Location and breadcrumbs Channel Configuration and Gain AC Voltage and Current Amplifier Status —图6— Preset Recall and Save Menu PRESETS INPUT S F1: A B C D Preset # and Configuration Location and breadcrumbs Current Menu Selection Empty area indicates no selections above (CCW). Next Menu selection below (CW)

C+D M M The following are electrically the same pointT1+ and T3+T2- and T4- —图19— F4: AB CD F4: AB CD The following are electrically the same pointT1+ and T3+T5+ and T7+T2- and T4-T6- and t8- AB Parallel CD Parallel

The following are electrically the same pointT1+ and T3+T2- and T4- 4-通道配置 —图23— F1: A B C D F1: A B C D A Single B Single C Single D Single M M A B

OUTPUTS SPEAKERS SAVEA B C DOutput:8.0 - - - - - -Imped:625 - - - - - -Power:Remaining Power Available: 1875 WEnter Load Profile (Impedance and Power)Default = 8 Ω Default = min. for amp Adjust Impedance based on the total loudspeaker load connected to the channel. Scroll to select (Imped or Power) To edit, press ENTER Repeat for remaining output channels To confirm, press ENTER Turn to adjust parameter Impedance and Power are dynamically linked for adjustments. —图25— Possible Output Mode Combinations using the Preset Wizard Modes: A B = Separate Channels / A+B = Bridge Mode / AB = Parallel Mode

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

A B C D M M M M F1: A B C D F1: A B C D Indicates more Presets Input Sub MF FullHFLF Scroll to desired Preset 20 Factory, 50 User-defined 步骤 2 —

F1: A B C D F18: 3-Way Press ENTER to confirm selection A+B C D M M M The message at the bottom changes to: “Recalling Preset now...” You may hear relays clicking To conrm the selection, press ENTER To select the Preset conguration, press ENTER

Scroll to select (-100 thru 20 dB) (0.1 dB increments) ENTER To confirm selection, press SEL To move to the next input, press Repeat procedure for remaining input channels.

HPF F1: A B C D Type BWrth Output