Mark Levinson 53 - Manual (Page 10)

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Mark Levinson
DO allow at least 6 inches (15.24cm) of clearance behind the
amplifier so that the power cord and cables have space to bend
without becoming crimped or strained.
DO NOT place the Nº53 on a thick rug or carpet or cover the
amplifier with a cloth, as this might prevent proper cooling.
DO NOT obstruct the ventilation holes on the top and bottom of
the unit or reduce airflow through the Nº53.
DO NOT place the Nº53 near low-level components. The power
amplifier is capable of producing large output currents and hence
significant magnetic fields, which can induce noise in sensitive
components.
DO NOT expose the Nº53 power amplifier to high temperatures,
humidity, steam, smoke, dampness, or excessive dust. Avoid
installing near radiators and other heat-producing appliances.
Warning! MAKE SURE all components are properly grounded. Do not
defeat the safety purpose of polarized or grounding-type plugs
with “ground-lifter” or “cheater” adapters. Doing so may cause
dangerous voltage to build up between components, which can
result in personal injuries and/or product damage.
Power Requirements
The Nº53 Reference power amplifier is configured at the factory for
100, 120, or 230 VAC power operation at 50Hz or 60Hz. Before
operating the Nº53, ensure that the voltage label on the rear panel
near the AC input connector indicates the correct operating voltage.
Caution!
DO NOT attempt to adjust the operating voltage. Consult a Mark
Levinson dealer if the operating voltage is incorrect or must be
changed for relocation purposes.
Different operating voltages may require the use of different
power cords and/or attachment plugs. Contact a Mark Levinson
dealer for additional assistance.
The Nº53 is capable of passing remarkable sound at exceptional
power levels. Depending on listening habits, loudspeaker demands,
and the number of power amplifiers present in the system, it is
possible that the electrical service may become the limiting
performance factor of your home theater system.