QSC CX4T User Manual download pdf (Page 4)

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.

Optional rear rack

mounting ears.

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QSC CX4T User Manual Page 4