QSC Audio 1200, 1100, 1400, 1700 owner manual Front View, Back View

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2.39Operation and Indicators Note that the Gain controls are calibrated in dB. As you turn the Gain down, it takes more input signal to reach full power, so the Gain should be kept in the upper 12 dB of its range for full power output from normal signal sources. The “0 dB” reference indicates that the amplifier gain is at 26 dB when the knob is adjusted to this position.

Note that full amplifier output power may be achieved even if the gain controls are not turned fully up. However, a larger input signal will be required to produce full rated output.

LED (Light Emitting Diode) indicators monitor the operation of the amplifier. A green LED serves as the pilot light to indicate that power is on. Each channel has a red “Clip” indicator that will show any distortion in the amplifier. Upon power up, these may not flash symmetrically. This does not necessarily indicate that there may be a problem.

The muting circuit blocks the sound for three seconds after turn-on and immediately after turn-off. This prevents turn-on and turn-off thumps and transients from reaching the speakers.

Please refer to Section 3 for more detailed instructions.

1100 FRONT VIEW

AC BREAKER AC SWITCH

HEADPHONE

 

PILOT LIGHT JACKS

GAIN CONTROLS

CLIP INDICATORS

1100 BACK VIEW

OCTAL SOCKET

BARRIER STRIP INPUTS

INPUT

PROGRAMMING

SWITCHES

1/4 INCH INPUTS

AC CORD

SPEAKER

BINDING POSTS

XLR INPUT

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Contents Owner’s Manual Avis SafeguardsPrecautions B L E O F C O N T E N T SOverview of Amplifier Warranty and DisclaimersIntroduction WelcomeFrequency Response SpecificationsInput Impedance Crosstalk Controls Indicators Cooling 1100 1200 1400 1700II Basic Instructions Important PrecautionsUnpacking and Inspection Quick Instructions Back View Front ViewCooling III OperationInput Connections AC RequirementsSee illustrations in .3 for location 34a 1/4-inch RTS Balanced Output Connection 36 1/4-inch Quasi-balanced Output Connection Input Switches and Mono Bridging Octal Module AccessoriesSpeaker Connections Mono Bridge Precautions69 Speaker Wire Table Cable Power Loss Damping Length Gauge ResistanceFactor Output Protection Features73 70 Volt Output Power 25 and 70 Volt SystemsNo Sound Operational TroubleshootingUnwanted Noises Horn Driver Protection IV Speaker ProtectionBackground DC ProtectionUser Responsibility Power CapacityPower Limiting RMS Power Ohm 16-ohm LoadObtaining Service Maintenance and ServiceCleaning User MaintenancePage 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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