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QSC GXD

QSC GXD
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GXD Amplifier
Quick Start Guide
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 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. 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 specifi ed by the manufacturer.
12. Unplug this apparatus during lightning storms or when unused for long periods of time.
13. 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.
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-C
*TD-000449-00*
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QSC GXD Specifications

General IconGeneral
Signal to Noise Ratio100 dB
InputsXLR and 1/4" TRS
OutputsSpeakon
ProtectionShort circuit, thermal
CoolingVariable speed fan
Frequency Response20Hz - 20kHz (+0/-0.5dB)

Summary

Explanation of Terms and Symbols

Key Terms Definition

Defines critical terms like WARNING, CAUTION, IMPORTANT, and NOTE used in the manual for user guidance.

Warning Symbol Explanations

Clarifies the meaning of symbols like lightning flashes and exclamation points to alert users to potential hazards.

Important Safety Instructions

General Safety Guidelines

Lists 21 essential safety instructions to prevent electrical hazards, fire, and ensure safe operation of the equipment.

Maintenance and Repair

Authorized Service Procedures

Emphasizes that all maintenance and repair must be performed by QSC authorized service personnel to ensure safety.

FCC Statement

FCC Compliance and Interference

Provides information on FCC compliance for Class B digital devices and methods to resolve radio frequency interference.

Rack-Mounting the Amplifier

Rack Installation Guide

Details how to securely install the amplifier in a standard equipment rack using provided hardware.

Connections

Input Connector Types

Describes the available audio input connectors: XLR, 1/4" TRS, and USB for firmware updates.

Input Wiring Specifications

Specifies the correct wiring for XLR and 1/4" TRS inputs, including pin assignments.

Output Specifications and Wiring

Power Output Ratings

Lists the power output of GXD amplifiers for 4Ω and 8Ω speaker loads.

Speaker Connection Methods

Explains how to connect speakers using NL4 connectors and binding posts, stressing polarity.

AC Power Connection

Power Cord and Breaker Safety

Instructions for connecting the power cord to a grounded outlet and using the reset breaker.

Power Consumption Data

Shows typical power consumption for GXD models across different voltages and frequencies.

Front Panel Controls and Indicators

Indicator and Control Functions

Explains the meaning of CLIP, SIG indicators, power button, gain controls, and the user interface.

GXD Signal Flow Diagram

Internal Signal Path

Visual representation of the amplifier's signal processing stages from input to output.

Setup and Operation

Menu Structure Overview

A diagram illustrating the hierarchical organization of the amplifier's user menu.

Home Screen Navigation and Display

Describes the elements shown on the amplifier's home screen for monitoring and basic operation.

Main Navigation Menu Structure

Navigation Paths

Outlines the primary menu options: PRESETS, STEREO DSP, UTILITIES, and Instructions.

Amplifier Configurations

Configuration Types Overview

Explains the four main types of amplifier configurations based on channel linking and DSP.

Preset Management

Recalling and Saving Presets

Instructions on how to recall existing presets and save custom setups.

Preset Saving Options

Saving Presets with Custom Names

Details the process of saving presets to specific locations with user-defined names.

DSP Modes Explained

Stereo DSP vs. Dual Mono DSP

Differentiates between Stereo DSP and independent DSP A/B modes for channel configuration.

Sensitivity Adjustment

Setting Input Sensitivity

Guides users on adjusting the input sensitivity level for optimal signal gain.

Crossover and Polarity Settings

Configuring Crossover and Polarity

Explains how to set crossover frequencies (HPF/LPF) and signal polarity for audio channels.

Equalizer (EQ) Settings

Adjusting EQ Parameters

Instructions for modifying EQ gain, frequency, and bandwidth for each audio band.

Delay Settings

Configuring Audio Delay

Details how to set audio delay times in various units like feet, meters, or milliseconds.

Limiter Functionality

Limiter Type and Power Adjustment

Guides on selecting the limiter type (MILD, MEDIUM, AGGRESSIVE) and its power settings.

Utilities Menu Functions

Utility Options Overview

Explains functions like STATUS, CONTRAST, TIMEOUT, LOCKOUT, and RESET.

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