QSC Audio 1700, 1100, 1400, 1200 B L E O F C O N T E N T S, Avis, Safeguards, Precautions

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Series One Power Amplifier

Operation Manual

T A B L E O F C O N T E N T S

I:INTRODUCTION

1.1

Welcome

3

1.2

Warranty

3

1.3

Overview of Amplifier

3

1.4

Specifications

4

II: BASIC INSTRUCTIONS

 

2.1

Unpacking and Inspection

5

2.2

Important Precautions

5

2.3

Quick Instructions

6

III: OPERATION

 

3.1

Cooling

8

3.2

AC Requirements

9

3.3

Input Connections

9

3.4

Octal Module Accessories

12

3.5

Input Switches and Mono Bridging

12

3.6

Speaker Connections

13

3.7

25 and 70 Volt Systems

15

3.8

Protection Features

15

3.9

Operational Troubleshooting

16

IV: SPEAKER PROTECTION

 

4.1

Background

18

4.2

DC Protection

18

4.3

Horn Driver Protection

18

4.4

Power Capacity

19

4.5

Power Limiting

19

4.6

User Responsibility

19

V: MAINTENANCE AND SERVICE

 

5.1

Cleaning

20

5.2

Dust Removal

20

5.3

User Maintenance

20

5.4

Obtaining Service

20

EXPLANATION OF

GRAPHICAL SYMBOLS

The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to humans.

The exclamation point within an equilateral triangle is intended to alert the users to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the product.

EXPLICATION DES

SYMBOLES GRAPHIQUES

Le symbole èclair avec point de flèche à l’intrérieur d’un triangle équilatéral est utilisé pour alerter l’utilisateur de la présence à l’intérieur du coffret de “voltage dangereux” non isolé d’ampleur suffisante pour constituer un risque d’elétrocution.

Le point d’exclamation à l’intérieur d’un triangle équilatéral est employé pour alerter les utilisateurs de la présence d’instructions importantes pour le fonctionnement et l’entretien (service) dans le livret d’instruction accompagnant l’appareil.

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

CAUTION: To reduce the rish of electric shock, do not remove the cover. No user-serviceable parts inside. Refer servicing to qualified service personnel.

WARNING: To prevent fire or electric shock, do not expose this equipment to rain or moisture.

AVIS

RISQUE DE CHOCK ELECTRIQUE

NE PAS OUVRIR

ATTENTION: Pour enviter les risques de chock electrique, ne pas enlever le courvercle. Aucun entretien de pieces interieures par l’usager. Confier l’entretien au personnel qualifie.

AVIS: Pour enviter les risques d’incendie ou d’electrocution, n’exposez pas cet article a la pluie ou a l’humidite.

SAFEGUARDS

Electrical energy can perform many useful functions. This unit has been engineered and manufactured to assure your personal safety. Improper use can result in potential electrical shock or fire hazards. In order not to defeat the safeguards, observe the following instructions for its installation, use and servicing.

PRECAUTIONS

L’énergie électrique peut remplir de nombreuses fonctions utiles. Cet appariel a été conçu et réalisé pour assurer une sécurité personnelle entiére. Une utilisation impropre peut entraîner des risques d’électrocution ou d’incendie. Dans le but de ne pas rendre inutiles les mesures de sécurité, bien observer les instructions suivantes pour l’installation, l’utilisation et l’entretien de l’appareil.

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Contents Owner’s Manual B L E O F C O N T E N T S SafeguardsPrecautions AvisWelcome Warranty and DisclaimersIntroduction Overview of Amplifier1100 1200 1400 1700 SpecificationsInput Impedance Crosstalk Controls Indicators Cooling Frequency ResponseUnpacking and Inspection Important PrecautionsII Basic Instructions Quick Instructions Front View Back ViewIII Operation CoolingSee illustrations in .3 for location AC RequirementsInput Connections 34a 1/4-inch RTS Balanced Output Connection 36 1/4-inch Quasi-balanced Output Connection Octal Module Accessories Input Switches and Mono BridgingMono Bridge Precautions Speaker ConnectionsFactor Cable Power Loss Damping Length Gauge Resistance69 Speaker Wire Table 25 and 70 Volt Systems Protection Features73 70 Volt Output Power OutputOperational Troubleshooting No SoundUnwanted Noises DC Protection IV Speaker ProtectionBackground Horn Driver ProtectionRMS Power Ohm 16-ohm Load Power CapacityPower Limiting User ResponsibilityUser Maintenance Maintenance and ServiceCleaning Obtaining ServicePage D I O

1200, 1700, 1400, 1100 specifications

QSC Audio has long been a revered name in professional audio, and its series of amplifiers—including the QSC 1100, 1200, 1400, and 1700—continues to showcase the brand's commitment to quality, performance, and innovation. Each model is designed to meet the diverse needs of audio professionals, whether for live sound, installations, or studio use.

The QSC 1100 amplifier is renowned for its lightweight and compact design while delivering a solid 1100 watts of power. It features QSC's advanced Class D technology, which not only provides high efficiency but also significantly reduces heat generation. The 1100 includes comprehensive protection circuitry, ensuring safe operation in all situations. With a Frequency Response of 20 Hz to 20 kHz, the amplifier offers a balanced and clear sound profile, making it suitable for various applications.

Moving up the line, the QSC 1200 offers increased power output at 1200 watts and comes equipped with advanced DSP (Digital Signal Processing). The DSP allows users to tailor the audio output precisely, delivering optimized performance for any setting. In addition to its robust power, the 1200 features a versatile input section, supporting both XLR and 1/4" TRS connectors, providing flexibility for any audio source.

The QSC 1400 amplifier is a workhorse in the series, capable of producing up to 1400 watts, making it ideal for larger venues and events. This model is designed with enhanced thermal management, ensuring reliability even during extended use. The 1400’s high-frequency response capabilities further improve its adaptability, handling complex audio signals with ease.

Lastly, the QSC 1700 stands as the powerhouse of this lineup, delivering a remarkable 1700 watts of clean, distortion-free audio. It boasts an advanced cooling system, making it perfect for high-demand environments. The 1700 is also equipped with customizable limiter settings, allowing users to protect their speakers while maintaining sound integrity.

QSC’s commitment to durability is evident in all four amplifiers, featuring rugged chassis designs and high-quality components to withstand the rigors of professional use. Collectively, the QSC 1100, 1200, 1400, and 1700 amplifiers offer a compelling range of features that cater to various audio needs, all while ensuring superior sound quality and reliability, making them excellent choices for any sound engineer or venue manager.
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