Bose PowerShare PS404D Installationshandbücher - Seite 15
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Importance of Proper Ventilation
For placement of the amplifier, keep the following in mind:
Make sure that air can circulate freely from left to right for adequate ventilation. There are vents on the
sides.
The temperature of the rack should be controlled to ensure that amplifiers are not exposed to ambient
temperatures exceeding 40 °C (104 °F).
Do not cover or block amplifier vents.
Do not place the amplifier in an enclosed space, such as a cabinet.
Make sure the chassis is protected from heat and kept away from direct heat sources, such as heating
vents and radiators.
The two fans in each amplifier run together at a variable speed. The fans will spin faster as the internal
temperature increases in order to keep the amplifier out of thermal shutdown when operating at 40 °C
(104 °F) or less, and at 200 watts of continuous power or less.
CAUTION: Do not allow the chassis to exceed the maximum operating temperature of 40 °C (104 °F).
Be aware of conditions in an enclosed rack that may increase the temperature above room-ambient
conditions. If the amplifier becomes too hot, it will go into a thermal protection mode and mute all
outputs.
Rack Mounting
PowerShare amplifiers are designed to fit standard 48-centimeter (19 in) rack equipment, occupying 1 rack-
unit (RU) in height, requiring a mounting depth of 40.1 centimeters (5.8 in) from the front rack rail. Use four
fasteners with washers (not supplied) to mount the amplifier front panel rack ears to the equipment rack rails.
CAUTION: Only use the mounting hardware recommended by the rack manufacturer.
Mute with Standard Contact Closure
The amplifier is designed to mute all outputs either when the Mute contacts are shorted together, or when the
Mute contacts are opened, depending on the amplifier configuration.
The default state is Normally Open (NO), where a short across the mute connector will mute all outputs. The
mute polarity can be inverted to Normally Closed (NC), where an open across the mute connector will mute
all outputs, using ControlSpace Designer.
Note: All Limit LEDs will blink red when the amplifier is muted from software, or from the rear panel mute
connector.
Use the included 2-pin Euroblock.
Installation Guide • PowerShare PS604D/PS404D
Installation
English • 15