Rack Installation - rcf UP 4242 Manual De Uso E Instalación

clockwise rotation) the frequency selected using
control (21). The range of adjustment is ±12 dB.
When the knob is in the central position, the
frequency response is not altered.
23) "HIGH" control
This knob accentuates (clockwise rotation) or
attenuates (anti-clockwise rotation) the high
frequencies. The range of adjustment is ±12 dB.
When the knob is in the central position the
frequency response is not altered.
24) "INPUT 1" on XLR socket
Input 1 for the audio signal to be amplified. In
order to amplify and transmit the audio signal
that drives this input, it is necessary to enable the
priority function using the terminals (14). The
input socket can be used as an alternative to the
terminal strip (18), to which it is connected in
parallel, and permits connection of sources that
supply a balanced or unbalanced audio signal in
output.
25) Earth terminal
Used for the earth connection of the unit.
Installation
The amplifier is supplied with rubber feet which
make it possible to set the unit directly on a table or
shelf. Position the unit horizontally on a sturdy, flat
surface. To ensure normal cooling of the unit, choose
a position that is well-ventilated, not exposed to
direct sunlight, and far from any heat source.
WARNING: To prevent the unit from
overheating, it is essential to leave a free
space of at least 10 cm (4") behind the
rear panel and in front of the side panels, and at
least 15 cm (6") above the upper panel; in any case,
never situate the unit inside a completely closed
structure.
Do not situate the unit in places that are subject to
high-intensity vibrations or particularly exposed to
dust or humidity.
A CLOSER LOOK: The UP 4242 and UP
4482 power amplifiers are equipped with
a special fan-cooling system called
Constant Gradient Cooling Tunnel , which ensures
better control over the temperature of the final power
stages with respect to traditional systems which
simply push the air through the enclosure, carrying
dust and soil onto the internal components. The
Constant Gradient Cooling Tunnel system, on the
other hand, sucks air from one side wall (the right-
hand side when facing the unit) and expels it from the
opposite wall, thus providing a shorter and more
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direct path for the cooling air, which is concentrated
on the heat dissipaters. This ensures greater
equipment reliability and longer lifetime.

Rack installation

satisfies the requirements of the EN 60439-1
standard.
units (2U = 3.5" = 88 mm), you need to purchase the
AR 1052-N accessory (code no. 173.10.059) and
carefully follow the instructions provided with the
accessory. The amplifier must be attached securely to
the rack, especially when the rack will be frequently
moved or transported. When arranging the
equipment in the rack enclosure, place heavier
equipment in the lower part and lighter equipment in
the upper part.
there is a free space of at least 7 cm (2.8") in front of
the side panels, and leave a free space of at least one
rack unit (1U = 1.73" = 44 mm) above and below the
unit (Fig. 16, page 48). When it is necessary to install
more than two UP 4242 / UP 4482 power amplifiers
in the rack, it is essential to use cooling fans in order
to facilitate cool air intake and hot air outtake. One
solution could be to install a ventilation panel with
fans in the upper part of the rack which will expel the
hot air, and a ventilation panel in the lower part
(where necessary also equipped with fans) to allow
cool air intake (see Fig. 16, page 48).
Connections
knowledge or specific instructions for making the
connections correctly and thus preventing any
electrical dangers.
must only be supplied from the mains after all the
connections have been made.
the connections have been made correctly to ensure
that there are no accidental short circuits.
installed in compliance with the current standards
and laws regarding electrical systems.
13
WARNING: To install the amplifier in a
rack, only use a rack enclosure that is
equipped with air vents and which fully
To install the amplifier in a rack in the space of two
To ensure adequate ventilation, make sure that
WARNING: For connecting the amplifier,
use only qualified and experienced
personnel having sufficient technical
To prevent the risk of electric shock, the amplifier
Before powering up the amplifier, re-check that all
The entire sound system must be designed and