User Responsibility; Mains Connection Grounding; Speaker Output Hazard; Speaker Damage - Lab.gruppen C 20:8X Operation Manual

1.7

User Responsibility

1.7.1 Mains connection grounding

Your amplifier must be connected to a grounded socket outlet.

1.7.2 Speaker output hazard

Power amplifiers are capable of producing hazardous output voltages. To avoid electrical shock, do
not touch any exposed speaker wiring while the amplifier is operating. The external wiring
connected to the speaker terminals shall be installed by a qualified instructed person or ready-made
leads or cords of appropriate capacity shall be used.
As the amplifier outputs produce high voltage,do not connect or disconnect speaker cables when
the mains power is on. Also, attach the safety cover on the speaker terminals for safe operation and
to comply with electrical product approvals.

1.7.3 Speaker damage

Your amplifier is very powerful and can be potentially dangerous to both loudspeakers and humans
alike. Many loudspeakers can be easily damaged or destroyed by overpowering them. Always check
the speaker's continuous and peak power capabilities. Although the amplifier's attenuators can be
used to reduce the overall gain,an increase of the input signal can result in full output power, which
may cause damage to connected speakers.
1.74

Maintenance

For safe and reliable operation, the dust filters on both sides of the front panel, behind the grilles, should be
removed and cleaned regularly to ensure maximum airflow through the device.
If the dust filters are not maintained there will be safety risks. For example, the unit can ignite
the dust and a fire will occur due to high internal temperatures. There is also a risk that the unit will
malfunction since it is dependent on constant airflow from front to rear. If the dust filters are not
clean and the unit malfunctions, any resultant problems will not be covered by the warranty.
C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4
Important Safety Instructions
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