GXD 8 - Receiver QSC - Free user manual and instructions

USER MANUAL GXD 8 QSC

EXPLANATION OF TERMS AND 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 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.

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 amplifiers) 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 fit into your outlet, consult an electrician for replacement of the obsolete outlet.
10. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
11. Only use attachments/accessories specified by the manufacturer.
12. Unplug this apparatus during lightning storms or when unused for long periods of time.
13. 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.
14. The appliance coupler, or the AC Mains plug, is the AC mains disconnect device and shall remain readily operable after installation.
15. Adhere to all applicable, local codes.
16. To prevent electrical shock, the power cord shall be connected to a mains socket outlet with a protective earthing connection.
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-000449-00-D

TD-000449-00

Maintenance and Repair

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

FCC Statement

NOTE: 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.

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 to an AC outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

NOTE: This Quick Start Guide is based on the basic configuration as the amplifier comes from the factory. For detailed instructions for custom configurations refer to the GXD User Manual.

Rack-Mount the Amplifier

Secure the amplifier in the rack with eight screws (not supplied), four in front, four in back. Typically, you will need a rear-ear mounting kit to mount the amplifier. Contact QSC Technical Services Group for more information about the kits. There are two different kits available. Follow the instructions included with the kit.

Connections

Inputs (Channels 1 & 2)

See Figure 1

Input Impedance: 20k Balanced, 10k Unbalanced See - Table 1 for wiring.

1. XLR female
2. 1/4'' female TRS Phone Jack
3. USB Standard B connector - Used for updating the amplifier firmware, refer to the GXD User Manual for details.

Input Wiring

Connector POS NEG GROUND
XLR 2 3 1
1/4"	TIP	RING
	- Table 1 -

Outputs (Channels A & B)

See Figure 2

4Ω or 8Ω impedance

Power Output

Amplifier 8Ω 4Ω Max Peak

GXD 4 400 W 600 W 1600 W

GXD 8 800 W 1200 W 4500 W

- Table 2 -

CAUTION! Do not combine the audio outputs in any way. Do not connect the audio outputs to ground.

Wiring

Be sure to observe polarity.

• NL4 connector - See Figure 3
• Binding Posts - Use banana plugs or wire directly

AC Power

Male NL4 Wiring
Figure 3

EN

WARNING: The power cord shall be connected to a mains socket outlet with a protective earthing connection.

GXD4 Outputs

Figure 2

See Figure 4

Connect the IEC power cord to the AC receptacle on the rear of the amplifier.

Push to reset Breaker when necessary.

Power Consumption
-Table3-

Amplifier	Voltage	Current	Frequency
GXD 4	100-240 VAC	~3.3 A - 1.6 A	50/60 Hz
GXD 8	100-240 VAC	~6.3 A - 3.6 A	50/60 Hz

Figure 4

Controls and Indicators

See Figure 5

1. Channel A CLIP indicator - illuminates red when the input is high enough to cause the channel to clip.
2. Channel A SIG (signal) present indicator - illuminates green when there is a signal applied to the input.
3. Power Switch/LED on/off - Illuminates blue when on.
4. Adjust Channel A GAIN
5. User Interface

a. HOME - go to HOME screen / view current PRESET
b. ENTER - select highlighted item and/or confirm parameter change
c. EXIT - return to previous screen and/or undo parameter change

1. Adjust Channel B GAIN, selects and adjusts controls
2. Channel B SIG (signal) present indicator - illuminates green when there is a signal applied to the input.
3. Channel B CLIP indicator - illuminates red when the input is high enough to cause the channel to clip.

Figure 5

GXD Signal Flow

Figure 6

Setup and Operation

EN

Menu Tree

PRESET

PRESET RECALL

PRESET SAVE

PRESET SAVE AS

*STEREO DSP and DSP A / DSP B depend on the selected configuration.

STEREO DSP*

SENSITIVITY

CROSSOVER

EQ

DELAY

LIMITER

DSP A / DSP B*

SENSITIVITY

CROSSOVER

EQ

DELAY

LIMITER

UTILITIES

STATUS

CONTRAST

TIMEOUT

LOCKOUT

RESET

Navigation Key

Figure 7

Home Screen

See Figure 8

From any screen HOME

1. Asterisk (*) indicating an unsaved change to the Preset
2. Currently active preset location (P1) and name
3. Output channel letter A and B
4. Limiter level indicator (Channels A and B)
5. LIMIT and CLIP indicators
6. Output meter A and B (visual)
7. Output gain (digital) range = -100 to +10 dB (Channels A and B)
8. Amplifier STATUS

Figure 8

Main Navigation Menu

See Figure 9

From HOME ENTER

1. Previous selection - PRESETS
2. Currently selected -STEREO DSP (or DSP A and DSP B)
3. Next selection - UTILITIES
4. Instructions

Figure 9

Configurations

There are four basic types of configuration:

Figure 10

Figure 11

Figure 12

Figure 13

Figure 10 - 2-channels in, stereo DSP, 2-channels out - Channel controls are linked, audio signals are not combined. (P1 through P7)
Figure 11 - 2-channels in, separate DSP, 2-channels out - Channel controls are not linked except Sensitivity. (P8 through P10)
Figure 12 - 1 or 2-channels in (mono summing), separate DSP, 2-channels out - Channel controls are not linked except Sensitivity. (P11 through P18)
Figure 13 - 1 or 2-channels in (mono summing), stereo DSP, 2-channels out - Channel controls are linked, audio signals are combined. (P19 and P20) The configurations are selected using the presets. Refer to the GXD User Manual for details of all 20 available configurations.

PRESETS

A preset configures the inputs and outputs, along with setting the DSP. When you make changes to the DSP, you can save your setup in any of the 20 preset locations.

View Current Preset Configuration

From HOME HOME

To return HOME

Figure 14

PRESETRECALL

Recall a preset to configure the amplifier to meet the requirements of your loudspeakers and installation.

There are 20 Presets. See Figure 15

1.From HOME ENTER
2. B PRESET
3. RESB-RECALL
4. B The pre-set you want,

Figure 15

PRESET SAVE

Saves the active preset with any DSP changes. See Figure 16

1.From HOME ENTER
2. RESH
3. B RESET SAVE, ENTER ENTER

Figure 16

PRESET SAVE AS

Select the LOCATION and/or change the NAME to save changes you make to the DSP.

See Figure 17 and Figure 18

Figure 18

STEREO DSP or DSP A and DSP B

STEREO DSP is set for both channels equally, at the same time. Separate DSPs (DSP A and DSP B) are set independently for each channel. The Sensitivity controls are linked in both Stereo DSP and dual mono DSP. Switching between Stereo DSP and Separate DSP is done by recalling presets that are either stereo or dual mono.

Any changes you make are made in real time - you hear the change as it is being made.

NOTE: The term "STEREO DSP" is used in this document as a generic term to mean either STEREO DSP or DSP A/DSP B, unless specifically noted.

SENSITIVITY

See Figure 19

Figure 19

CROSSOVER and POLARITY

See Figure 20 through Figure 22.

Figure 20

Figure 21

Figure 22

EQ

See Figure 23 through Figure 25.

1.From HOME ENTER
2. BOTEREODSP ENTER
3. B
4. B ANE, BAND2, BAND3, or BAND4
5. B GAIN: ENTER
6. (B) AIN(12 dB to +12 dB),
7. B FREQUENCY,
8. B FREQUENCY (20 Hz to 20 kHz),
9. B W (bandwidth),
10. B BANDWIDTH (0.1 Oct to 3.0 Oct),

Figure 23

Figure 24

Figure 25

DELAY

See Figure 26

1.From HOME ENTER
2. BOTERBDSP, ENTER
3. B ELAT ENTER
4. ELAY0.00 to 56.30 FT, or 17.16 M, or 50 MS),

Figure 26

LIMITER

See Figure 27 and Figure 28.

1.From HOME ENTER
2. BOTEREODSP, ENTER
3. B D M I F E R
4. B TYPE
5. B MILD: MEDIUM, or AGGRESSIVE
6. B POWER ENTER
7. B POWER (see -Table 4), ENTER
8. B IMPEBANCE (4 Ω or 8 Ω), ENTER HOME

Figure 27

Figure 28

Model 4Ω8Ω
-Table4-

GXD 4	5 W - 600 W 5 W - 400 W
GXD 8	5 W - 1200 W 5 W - 800 W

Utilities

The following utilities are available on the GXD user interface. Refer to the GXD User Guide for details.

STATUS - Amplifier status including AMP TOTAL RUN TIME, HARDWARE version, and FIRMWARE version

CONTRAST - Sets the contrast of the front-panel LCD

TIMEOUT - Sets the time for the LCD to turn off. Using any control turns the LCD on.

LOCKOUT-LOCKDSP,LOCKALL,UNLOCK

RESET - Sets all amplifier parameters to the factory defaults, including all DSP parameters

QSC

Mailing Address:

QSC Audio Products, LLC

1675 MacArthur Boulevard

Costa Mesa, CA 92626-1468 USA

Telephone Numbers:

Main Number: [phone]

Sales & Marketing: [phone] or toll free (USA only) [phone]

Customer Service: [phone] or toll free (USA only) [phone]

Facsimile Numbers:

Sales & Marketing FAX: [phone]

Customer Service FAX: [phone]

World Wide Web:

www.qsc.com

E-mail:

[e-mail]

[e-mail]

[e-mail]

If you would like a full copy of the GXD User manual, visit the QSC Audio Products website at www.qsc.com

GXD8 5W-1200W 5W-800W

-Tabla4-

Utilidades

QSC Audio Products, LLC

1675 MacArthur Boulevard

If you would like a full copy of the GXD User manual, visit the QSC Audio Products website at www.qsc.com

GXD 4	5 W - 600 W 5 W - 400 W
GXD 8	5 W - 1200 W 5 W - 800 W

Tableau 4

Utilaires

QSC Audio Products, LLC

1675 MacArthur Boulevard

If you would like a full copy of the GXD User manual, visit the QSC Audio Products website at www.qsc.com

QSC Audio Products, LLC

1675 MacArthur Boulevard

Costa Mesa, CA 92626-1468 USA

Telefonnummern:

If you would like a full copy of the GXD User manual, visit the QSC Audio Products website at www.qsc.com

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术语及符号说明

QSC Audio Products, LLC

1675 MacArthur Boulevard

Costa Mesa, CA 92626-1468 USA

电话号码：

总机：[phone]

If you would like a full copy of the GXD User manual, visit the QSC Audio Products website at www.qsc.com

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CROSSOVER (KpoccoBep) n POLARITY (Poiarphoctb)

KoMaNaHmQ SsC Audio Products, LLC

1675 MacArthur Boulevard

Costa Mesa, CA, 92626-1468, CUIA

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OCHOBHOMeP: [phone]

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0aKcIyJbKJIeHtCKoI npJepeKKn: [phone]

A.ДресВИnteРсЕТС:

www.gsc.com

JnKtpponHna noHa:

[e-mail]

[e-mail]

[e-mail]

If you would like a full copy of the GXD User manual, visit the QSC Audio Products website at www.qsc.com

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QSC Audio Products, LLC

1675 MacArthur Boulevard

Costa Mesa, CA 92626-1468 USA

：

[phone]:

[phone]:

[phone] (

[phone]:xxaiia

[phone] (baa aasaaal

:U

[phone]:

[phone]: cnaal 2022 wsl

aall jyj 4

www.qsc.com

1

[e-mail]

[e-mail]

[e-mail]

If you would like a full copy of the GXD User manual, visit the QSC Audio Products website at www.qsc.com