QSC Audio CX Series - Manual (Page 4)

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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.