QSC Audio CX Series Speaker Damage, Speaker Output Shock Hazard, Rack Mounting Precautions

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Optional rear rack

mounting ears.

I. Warning Notices

SPEAKER DAMAGE

The CX Series amplifiers are among the most powerful professional amplifiers available and are capable of producing much more power than many loudspeakers can handle. It is the user’s responsibility to use suitable speakers with the amplifier and to use them in a sensible way that will not cause damage.

QSC will not be responsible for blown speakers. Consult the speaker manufacturer for power-handling recommendations.

Even if you reduce the gain using the amplifier’s rear panel attenuator controls, it is still possible to reach full output power if the input signal level is high enough.

A single high-power crescendo can blow high-frequency speaker drivers almost instantaneously, while low- frequency drivers can usually withstand very high, continuous power levels for a few seconds before they too die. Reduce power immediately if you hear any speaker “bottoming out”-harsh pops or cracking distortion that indicate that the speaker voice coil or diaphragm is striking the magnet assembly.

QSC recommends that you use amplifiers of this power range for more headroom (cleaner sound) rather than for increased volume.

SPEAKER OUTPUT SHOCK HAZARD

A CX amplifier is capable of producing hazardous output voltages. To avoid electrical shock, make sure the cover is in place over the output terminals, and do not touch any exposed speaker wiring while the amplifier is operating.

RACK MOUNTING PRECAUTIONS

To minimize twisting stress on the front mounting ears, the amplifier’s internally mounted output transformers are located close to the front panel. Nevertheless, when rack mounting any CX amplifier, make sure it is well supported at all four corners to avoid damage to either the amplifier mounting ears or the mounting rails.

Contact the QSC Technical Services Department to order rear support brackets.

LIFTING PRECAUTIONS

In order to safely move or install the amplifier, it is recom- mended that two persons share the weight when lifting and positioning the unit.

SICHERHEITSVORSCHRIFTEN BEIM HOCHHEBEN

Um den Verstärker sicher zu verschieben oder einzubauen, wird empfohlen, das Gewicht des Verstärkers beim Hochheben und Verschieben gleichmäßig auf zwei Personen zu verteilen.

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Contents CX Series Table of Contents Explanation of Graphical Symbols Rack Mounting Precautions Lifting PrecautionsSpeaker Damage Speaker Output Shock HazardII. Overall Description Portable rackCX4 III. Inputs IV. OutputsInput Sensitivities Caused by a floating inputOutput connections for CX, bridged mono mode AC Power Controls & DisplaysVI. Operation CX4 and CX4TTroubleshooting CX6, CX6T, CX12 and CX12TProblem Overheating CX6, CX6T, CX12 & CX12TPage BRIDGED-MONO Mode Caution CX4 and CX4TMaximum LONG-TERM Output Power AC Current ConsumptionHeat Emissions Protection Circuits VII. Specifications Frequency ResponseDamping Factor Output RegulationPower Requirements Voltage GainInput SENSITIVITY, Vrms Input ImpedanceDimensions WeightLine for different power levels VIII. Distributed linesLoudspeaker Coverage and Placement IX. Designing the Distributed Sound SystemPage Intelligibility Determining Power LevelsRequires Selecting the Amplifier ExampleUsing Components with Different Voltages How Many Speakers? Watts for the speakers25 x 1.25 = Or 64 speakers tapped at 5 watts, etcXI. Other Design Considerations Speaker Transformer SaturationWire Loss Power Transfer Coefficient = RLOAD/RWIRE + RLOAD2Page Heat Emissions XII. Address & Telephone Information

CX Series specifications

QSC Audio, a recognized leader in professional audio solutions, presents the CX Series of amplifiers, a fusion of power, efficiency, and cutting-edge technology designed to meet the demands of various sound reinforcement applications. Known for their reliability and outstanding performance, the CX Series amplifiers are perfect for installations in venues, theaters, and houses of worship, delivering high-quality audio reproduction regardless of the setting.

At the core of the CX Series is its robust Class D amplification. This technology not only ensures excellent audio fidelity but also enhances energy efficiency, resulting in lower operational costs and cooler running temperatures. The amplifiers utilize a linear power supply, which contributes to exceptional audio quality by providing stable and clean power to the components. With varying power ratings, including options ranging from 200 to 1200 watts per channel, the CX Series caters to different venue sizes and specific audio requirements.

The CX Series is engineered with a range of features that enhance usability and performance. Integrated DSP (Digital Signal Processing) allows users to access advanced sound processing algorithms, enabling fine-tuning of audio settings for optimal performance. The amplifiers include comprehensive protection circuitry to safeguard the equipment from thermal overload, short circuits, and signal clipping, ensuring longevity and reliability in demanding environments.

Connectivity is also a significant aspect of the CX Series. The amplifiers are equipped with a variety of input and output options, including XLR, 1/4" TRS, and barrier strip connectors, facilitating seamless integration with a wide range of audio sources and speakers. Moreover, the user-friendly interface includes LCD displays for easy monitoring, making setup and adjustments straightforward for audio engineers and technicians.

Another defining feature of the CX Series is its lightweight design. This portability makes installation and transport easy without compromising on performance. Additionally, QSC’s commitment to sustainability is evident in the design, as the amplifiers are constructed with environmentally friendly materials and have a reduced carbon footprint, aligning with modern practices in eco-conscious audio engineering.

In summary, the QSC Audio CX Series amplifiers blend professionalism with versatility, delivering exceptional performance that satisfies both audio quality and operational reliability. Their innovative technologies and thoughtful design make them a powerful ally for professionals in any sound reinforcement scenario.
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