User guide

DCM-1 User Manual v1.0
Conguration
32
Input Gain
Rotary:
Buttons:
adjusts Gain
select Input


The INPUT GAIN function allows adjustment of the level of
each music input, so that sources with different output levels
can be matched in volume. This adjustment will affect the
audio level of the selected source in all Zones.
The gain control range is deliberately restricted to ±12dB,
but it should permit input levels to be adjusted to suit most
sources. Should it prove inadequate, the output level of the
source should be adjusted instead.
Adjustment of input gain is not available for sources
connected via LE-1 and BE-1 remote input plates. The
presence of these plates at the Extension Ports is detected,
and the gain on inputs in use is then xed at ‑6dB. In these
cases, input gain should be adjusted with the controls
provided on the input plates themselves or at the source
itself.
The eight numeric buttons correspond to the eight line
inputs; select that to be adjusted.
The rotary control adjusts the input gain. The range of
adjustment available is ±12dB in 1dB steps.
A bargraph meter is displayed on the top row of the LCD.
It indicates input signal level; the gain should be adjusted so
that the deection reaches the “target area” at the right‑
hand end, indicated by horizontal lines.
Maximum Music Level
Rotary:
Buttons:
sets Level
select Zone


This menu function allows a maximum music level to be set
for each Zone. This is useful when audio ampliers of similar
ratings are being used for each Zone, but different music
volumes are required in the various Zones. Once set, users
will not be able to raise the volume for a Zone above the
preset maximum either from a CDR-1 remote control in the
Zone or from the DCM-1 itself.
The eight numeric buttons correspond to the eight Zones;
select that to be adjusted. The Maximum Level setting is
per-Zone only; the function is disabled if a Zone which is
a member of a currently-enabled Group is selected. If the
Maximum Level setting cannot be altered, check the settings
in the GROUP ENABLE function (in the Music menu).
The rotary control sets the maximum output level for the
selected Zone. The range of adjustment is from 0dB (the
default) to -62dB in 1dB steps, where 0dB means that no
restriction on maximum level is applied.
Note that it is not possible to set the Maximum Level equal
to or lower than any Minimum Level which has been set (see
below). Thus if the Minimum Level for a Zone has been set
to -30dB, the Maximum Level must be in the range 0dB to
-29dB.
Minimum Music Level
Rotary:
Buttons:
sets Level
select Zone


This menu function allows a minimum music level to be set
for each Zone. This prevents users from lowering the music
volume in a Zone below a preset minimum (or turning it
down completely) either from a CDR-1 remote control in
the Zone or from the DCM-1 itself.
The eight numeric buttons correspond to the eight Zones;
select that to be adjusted. As with Maximum Level, this
function is disabled for Zones belonging to enabled Groups.
The rotary control sets the minimum output level for the
selected Zone. The range of adjustment is from -ºdB (the
default) to -1dB in 1dB steps, where -ºdB means that no
restriction on minimum level is applied, and that the volume
in the selected Zone can be reduced to zero.
Note that it is not possible to set the Minimum Level equal
to or higher than the Maximum Level which has been set
(see above). Thus if the Maximum Level for a Zone has been
set to -10dB, the Minimum Level must be in the range -ºdB
to -11dB.