Cloud CX163 Installations- und Benutzerhandbuch - Seite 9

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INSTALLATION

Hardware Considerations

The CX163 Zone Mixer is built in a 1U-high 19" rack mount
enclosure. It is recommended that the Zone Mixer is installed
in a 19" rack wherever possible. The unit is approx. 150 mm
deep, but 250 mm of rack depth should be available to allow
for rear connectors and cabling.
The CX163 has low power consumption and there should
be no thermal problems. Other equipment may be installed
above or below the CX163.
The choice of location will be dictated by the specifics of the
system and building layout. It is recommended that wherever
possible, the CX163 should be mounted in an equipment rack
along with as many of the music sources (CD players, music
servers, TV receiver boxes, etc.) and audio power amplifiers
(driving the zone loudspeakers) as practical.

Power Supply

The CX163 is fitted with a Universal power supply which can
operate on mains voltages from 85 to 253 V. An IEC mains
cable with a plug appropriate for your country is supplied. The
unit's power consumption is 4.18 W.

Fuses and ratings

The only user-accessible fuse is an AC mains fuse on the
rear panel. Only replace a fuse with one of exactly the
same type. The fuse rating is 1 A; the type is a T1A, size
20 x 5 mm, with high breaking capacity.

System Connections

Music Sources

Connect the system's various music sources to inputs
LINE 1 to LINE 6. The inputs are unbalanced, on standard
RCA jacks (phono sockets). All six inputs are stereo, with
separate L and R connectors. The music inputs remain in
stereo throughout the Zone Mixer for Zone Outputs 1 and
2, but are summed internally to mono for the Utility Output.
If any music sources are mono, with only a single output, they
can be connected to either the left or right input, but the
primary Zones should be reconfigured for mono operation.
(see "Stereo and mono operation" on page 13). The
sensitivity range available should allow most standard items
of audio equipment such as computers/tablets, music servers
and media receivers, etc., to operate at a satisfactory level.
Provided the music source is adjacent to the Zone Mixer,
normal phono-phono (or 3.5 mm jack-to-phono leads can be
used. Always avoid using pre-made leads of an unnecessary
length.
If it is necessary to connect an item of source equipment
with a balanced output, the ideal method is to use a balancing
transformer between the source and the unbalanced input.
Suitable audio transformers, which should have a ratio of 1:1,
are readily available from major audio component suppliers.
The transformer(s) should be mounted as close to the Zone
Mixer as practical, and housed in a screened enclosure if
they are not individually screened. The preferred connection
method is shown below.
Balanced outputs (XLRs):
pin 1 ground
pin 2 hot
pin 3 cold
Audio balancing transformers
LEFT
-
-
3
+
+
1
2
SCN
SCN
RIGHT
-
-
3
+
+
1
2
SCN
SCN
If transformers are not available, a balanced source may feed
an unbalanced input directly as long as care is taken over how
the connections are made. A variety of design techniques are
in use to implement balanced outputs in audio equipment,
and some designs require different wiring protocols to others.
Installers are advised to check the manuals with each item
for guidance on how the outputs should be connected to an
unbalanced input.
However, the wiring methods shown below will work in a
large number of cases:
-
3
+
2
1
SCN
LEFT
-
3
+
2
1
SCN
RIGHT
Balanced outputs (XLRs):
pin 1 ground
pin 2 hot
pin 3 cold
CX163 Installation and User Guide v1.1
LEFT
Unbalanced
SCN
inputs
RIGHT
Unbalanced
SCN
inputs
Unbalanced
inputs
LEFT
RIGHT
SCN
-
+
SCN
-
+
When using twin-and-screen
cable, join 'cold' to screen at
CX163 end
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