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CXD Amplifiers
User Manual
CXD4.2 — 4 Channel, 1600 W Amplifier
CXD4.3 — 4 Channel, 2500 W Amplifier
CXD4.5 — 4 Channel, 5000 W Amplifier
TD-000367-00-A
*TD-000367-00*
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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
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FCC Statement NOTE!: This equipment has been tested and found to comply with the limits for a Class A digital de vice, 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 communi
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arranty (USA only; other countries, see your dealer or distributor) QSC Audio Products 3 Year Limited arranty 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 Distributo
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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 e
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Features Amplifier Front Panel 11 1 12 2 3 13 4 5 14 6 15 7 8 16 9 10 — Figure 1 — 1. Output channels are labeled A, B, C, and D 9. Input Channel Signal-Present LEDs (Blue) 2. Output Channel Mute Buttons and LEDs (Red) 10. Input channels are labeled 1, 2, 3, and 4 3. Output Channel Limiter LEDs (Red) 11. LCD Graphic Display 4. Output Channel -10 dB Below Limiter Activation LEDs (Blue) 12. HOME Button EN EN 5. Output Channel -20 dB Below Clip LEDs (Blue) 13. ENTER Button 6. Soft Power Button (Blu
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ENTER Button ENTER Amplifier Control • Navigates into the menu structure A B OUTPUT C D • Enters the edit mode for adjusting parameters MASTER • Confirms the changes you make, and exits the edit mode. CONTROL MUTE MUTE MUTE MUTE HOME EXIT EXIT Button LIM ENTER -10 • Navigates out of the menu structure and parameter selection. -20 • In the edit mode, pressing EXIT reverts the value back to its prior EXIT state, and exits the edit mode. SEL SEL SEL SEL GAIN HOME HOME Button CLIP SIG • If yo
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CXD Amplifier Signal Flow Input Settings Output Processing Amp Config. 1 High- Low- RMS Sensitivit Sensitivity y Gain / 5-Band pass pass A/D Meter Gain Mixer Mute Delay D/A Meter Peak A Swit Switc ch h Polarity PEQ Filter Filter Limiter 2 High- Low- RMS Sensitivit Sensitivity y Gain / 5-Band pass pass A/D Meter Gain Mixer Mute Delay Peak D/A B Meter Swit Switc ch h Polarity PEQ Filter Filter Limiter 3 High- Low- RMS Sensitivity Gain / 5-Band pass pass A/D Meter Gain Mixer Mute Delay D/A Meter Pe
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Menu Tree Presets Inputs Outputs Utilities Preset Recall Input Sensitivity Mixer w/Noise & Tone Status Preset Save Input Gain Mode (Lo-Z, 70V, 100V) Amp ID Preset Wizard Spkr Processing Display Crossover Lockout Password PEQ Delay GPIO Limiter Array Correction* Load Speaker *For QSC Line Arrays only Save Speaker EN EN 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
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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. CAUTIONG!
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Inputs Connect the Audio Inputs ROUTABLE INPUTS USB 1 2 3 4 Unbalanced Balanced HEARTBEAT GPO GPI — Figure 10 — — Figure 11 — — Figure 12 — 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 EN EN are 10 kΩ balanced or unbalanced, with a sensitivity of either +4 or +14 dBu. 1. Make sure your audio source device
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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
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F8: AB+CD AB Parallel F8: AB+CD Bridged with CD Parallel M AB+CD The following are electrically the same point T1+and T3+ T5- and T7- — Figure 16 — Two-Channel Configurations F6: A+B C+D A+B Bridged F6: A+B C+D C+D Bridged M A+B M C+D EN EN — Figure 17 — F5: AB C+D AB Parallel F5: AB C+D C+D Bridged M AB M C+D The following are electrically the same point T1+ and T3+ T2- and T4- — Figure 18 — F4: AB CD AB Parallel F4: AB CD CD Parallel The following are electrically M AB M CD the sam
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F7: ABC D ABC Parallel F7: ABC D D Single M M D ABC The following are electrically the same point T1+, T3+, and T5+ T2-, T4-, and T6- — Figure 20 — Three-Channel Configurations F3: A+B C D A+B Bridged F3: A+B C D C Single D Single M M M A+B C D EN EN — Figure 21 — F2: AB C D AB Parallel F2: AB C D C Single D Single M M M AB C D The following are electrically the same point T1+ and T3+ T2- and T4- — Figure 22 — Four-Channel Configuration F1: A B C D A Single F1: A B C D B
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Connect the Loudspeakers ARNINNG!: 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 recommend
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Preset izard NOTE!: The power levels shown in this procedure are taken from the CXD4.3 unless indicated otherwise. CXD4.2 will show less power and CXD4.5 will show greater power. For complete details refer to the "Specifications" on page 28. HOME > PRESETS > PRESET WIZARD > ENTER Step 1 — Adjust Impedance and Power Adjust Impedance based on OUTPUTS SPEAKERS SAVE Scroll to select (Imped or Power) the total loudspeaker load Output: A B C D connected to the channel. ENTER To edit, press 8.0 -
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Step 4 — Save Wizard Preset OUTPUTS SPEAKERS SAVE Scroll to the Save screen When you have finished selecting loudspeakers, User Preset Number: 21 ENTER continue to scroll to To edit User Preset number, press access the SAVE tab. New Preset Name Turn to adjust parameter C o n f i g - A ENTER To confirm, press SAVE Edit preset number or press EXIT Create New Preset from an Existing Preset To create a preset from an existing preset, recall the preset with the desired output configuration, modif
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Set up the Inputs NOTE!: Changes made to input levels are in real time. HOME > INPUTS > INPUT SENS > ENTER Step 1 — Select Input Sensitivity Input F1: A B C D Scroll to select (+14 or +4 dBu) 1 Inputs > Input Sens (The background turns to green.) ENTER To confirm selection, press INPUT SENS +14 dBu SEL To move to the next input, press Repeat procedure for remaining input channels. Press ENTER to confirm HOME > INPUTS > INPUT GAIN > ENTER Step 2 — Set Input Gain EN EN Input F1: A B C D Scro
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HOME > OUTPUTS > MIXER > ENTER Step 1 — Set Mixer Gains Output F1: A B C D Adjust the Mixer Gain for the selected Input A ENTER To confirm, press Scroll to remaining Inputs and repeat EXIT After confirming all settings, press Input 1 Input 2 Input 3 Input 4 SEL MIXER To move to the next output, press 4.2 -100.0 2.7 -100.0 Mode Select HOME > OUTPUTS > MODE > ENTER Step 2 — Select the Output Mode Output F1: A B C D A EN EN Outputs > Mode Scroll to select Low-Z, 100V, or 70V MODE SELECT Mode:
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HOME > OUTPUTS > SPKR PROC > LOAD SPKR > ENTER Step 1 — Load an Existing Loudspeaker for the Selected Output ENTER To edit Speaker, press ABOUT SPEAKERS LOAD Band and Filter Scroll to select Speaker model Output: A selections are ENTER displayed and To confirm, press Speaker: WL2102 BiLFNS constrained based 2-Way LF Band: Scroll to (Band, Filter) on the loudspeaker. Filter: 80 Hz ENTER To adjust, press CONFIRM Adjust selected parameter ENTER To confirm, press Scroll to LOAD ENTER To Load the
