User guide

Installation
DCM-1 User Manual v1.0 17
Music Sources
Connect the system’s various music sources to LINE 1 to 8.
When allocating sources to inputs, bear in mind that if Cloud
LE-1 or BE-1 remote plates also form part of the system,
these can be connected to LINE 1 to 4 only.
Standard connection
All 8 line inputs offer unbalanced connection for stereo
sources on a pair of standard phono sockets (RCA jacks).
The sensitivity range available should allow most standard
items of audio equipment such as CD players, PC-based
music servers, TV tuners, etc. to operate at a satisfactory
level. Most such equipment will have stereo unbalanced
outputs, and as long as the source equipment is adjacent to
the DCM-1, normal phono-phono leads can be used.
Mono sources
If connecting a source with only a single mono output to
the DCM-1, connect it to both the L and R sockets, using a
Y-splitter lead or similar.
Balanced sources
LINE 8 is additionally provided with electronically-balanced
inputs, which may be used to connect source equipment
with balanced outputs. Balanced connection is always
preferable to unbalanced for situations involving long cable
runs, and should be used if one of the music sources is
remote from the DCM-1 (a DJ mixing system is a common
example).
When connecting balanced sources to LINE 8’s balanced
input connector, wire as shown below. Note that the cables’
screens are not connected at the source end.
Do not connect music sources to both the balanced and
unbalanced connectors of LINE 8.
Hardware considerations
The DCM-1 is built in a 2U-high 19” rackmount enclosure.
It is strongly recommended that the DCM-1 is
installed in a 19” rack wherever possible. The DCM-1
is approx. 160mm deep, but 250mm of rack depth should be
available to allow for rear connectors and cabling.
The DCM-1 has low power consumption and there are
no thermal considerations other than ensuring that the
ventilation grilles (one on each side, one on the bottom
panel) are not obstructed once installed. Other equipment
may be installed above or below the DCM-1 within this
constraint.
The choice of location will be dictated by the specics of the
system and building layout. It is recommended that wherever
possible, the DCM-1 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
ampliers (driving the zone loudspeakers) as practical.
When deciding the DCM-1’s location, bear in mind
that access to it will probably be required, as there are
numerous conguration settings that may need to be
changed - occasionally or frequently - depending on the daily
requirements of the building.
Power Supply
The DCM-1 requires ±12v DC, which is supplied by the
external DC Power Supply Unit (PSU) included with the
unit. This has a 1m captive cable with a moulded 4-pin plug
for connection to the DCM-1. The PSU is of the “Universal”
type, and will operate on any AC supply voltage from 100 to
240v. Wherever possible, mount the PSU in a safe location
within the equipment rack, securing both the DC cable
and the IEC mains lead with cable ties to avoid inadvertent
disconnection.
System Connections
1 2
3
LEFT
RIGHT
LEFT
RIGHT
1 2 3 1 2 3
+
+
-
-
+
+
-
-
SCN
SCN
pin 1 ground
pin 2 hot
pin 3 cold
Balanced outputs (XLRs):
DCM-1 Balanced inputs
pin 1 ground
pin 2 cold
pin 3 hot
1 2
3
Balanced source to balanced inputs