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Zenith 13K2 Amplifier Manual 9
the power supply overheats, another sensing circuit
will mute all output channels until the power supply
cools to safe operating temperature. An early
warning before shut down will be indicated on the
front panel LEDs.
Always make sure that the dust-filters behind the
detachable front panel are clean to ensure
maximum possible airflow.
- If the amplifier malfunctions due to dirty dust
filters, any required repairs are not covered by the
warranty.
- The horizontal stacked, suggest the tail exhaust
outlets up or to the vents.
5.3.1 Rack installation
To prevent thermal overload, the following guidelines
should be followed.
5.3.2 Ventilation
The 10K4 amplifier draws cool air in via the front
panel and exhausts via the rear. Care should be
taken to install away from devices with the opposite
airflow direction.
- For installed rack systems or touring racks with
enclosed rear panels, additional forced exhaust
ventilation should be utilised.
5.4 Operating voltage
The label placed to the right of the mains
cable on the rear of the amplifier indicates
The AC mains voltage for which the amplifier is wired
and approved: 230V. Connect the power cable only
to the AC source type referred to on the label. The
warranty will not cover damage caused by
connecting to an incorrect type of AC mains.
13K2 switch mode amplifiers use primary switching.
Because the mains power is rectified directly before
the transformer, the amplifier is insensitive to mains
frequency. It may be connected to 50 or 60Hz
sources, and actually will operate on line
frequencies from DC to 400Hz.
13K2 amplifiers use captive mains input
connections. If the power plug mounted at the