Cloud Electronics 46-120TMedia - Manual (Page 21)

46-120 Installation and User Guide V1.2 21
SETTING UP & OPERATION
Music Inputs
Gain & level
To avoid dramatic changes in volume when switching between
sources, the 46-120’s music inputs are provided with preset
gain trim controls ([3] on page 11). These vary the input
sensitivity from -12 dBu (195 mV) to +8 dBu (2.0 V).
When
setting the system up, play audio from all the sources in use
and listen to them one at a time in a convenient zone (ideally
that in which the mixer is located) at a reasonable volume.
Taking a source of “average” volume as the reference, the gain
controls of the others should be adjusted so that there is no
appreciable difference in volume between any of the sources.
(With a typical music source, setting the gain on its channel
to mid-way is a good starting point.) Note that consideration
may need to be given to the type of programme in use,
particularly if the sources include TV sound.
In normal operation, the music level in each primary zone
is set with the
MUSIC LEVEL control on the front panel
([2] on page 11). This control will not be operative if the
corresponding rear panel
MUSIC CONTROL LEV push-
button is set to REMOTE. The music level at the MOH/Utility
output is set with the rear panel
MOH/UTILITY MUSIC
LEVEL preset control ([15] on page 12).
Note that the setting of the music level has no effect on
microphone volume.
Local/remote control
If a zone is to have its music level and/or source controlled
remotely – typically by an RL-1 or RSL-6 Series remote control
plate - the corresponding rear panel
MUSIC CONTROL
push-button(s) must be set to REMOTE (button in) for the
remote controls to be operative and for the corresponding
front panel controls to be disabled. Zones without such plates
should be set to FRONT PANEL (button out).
The 46-120 features separate
MUSIC CONTROL buttons
for assigning control of music source and level in each zone
to a remote control plate. The four
LEV buttons determine
whether music level will be controlled from the 46-120’s
front panel or from a remote location, and should be set to
REMOTE for zones in which an RL-1 or RSL-6 Series plate
is installed. The corresponding front panel
MUSIC LEVEL
controls will be disabled. The four SRC buttons determine
whether music source selection will be controlled from the
46-120’s front panel or from a remote location, and should be
set to REMOTE for zones in which an RSL-6 Series plate is
installed. The corresponding front panel MUSIC SOURCE
controls will be disabled.
Note that the 46-120 supports additional
methods of remote control of music level and
source. These are:
• use of an LM-2 remote active module connected to the
ZONE 1 FACILITY PORT (applicable to Zone 1 only)
• RS-232 serial or TCP/IP control from external control
systems via a CDI-46 Digital Interface card.
In both cases, the MUSIC CONTROL SRC and LEV
buttons for the relevant zone(s) should be set to REMOTE
for correct operation and for the front panel controls to be
disabled.
Note that independent remote control of music level or
source selection in areas fed by the Utility output is not
possible.
46-120
MEDIA
digital media player
This section of the manual applies to models
46-120 MEDIA and 46-120T MEDIA only.
MEDIA versions of the 46-120 include an integral
digital audio player, which can play audio recorded as WMA
or MP3 files from either USB memory devices or SD cards
plugged into their respective sockets on the front panel [10]
and [11].
A standard set of “transport” controls is provided on the
front panel to play, stop, pause, etc., programme material.
The stereo audio output of the media player is mixed to (L+R)
mono and routed internally via the
LINE 1/MEDIA switch
([2] at page 12) to Line Input 1. Thus to route the media
player to one or more zones, the rear panel switch must be
set to MEDIA (button OUT), and the front panel
MUSIC
SOURCE switch set to 1.
Compatible media
• USB: USB 2.0-compatible memory devices.
• SD: SD cards up to 4 GB capacity, or SDHC cards up
to 32 GB. MMC cards of the same capacity are also
compatible.
Filing systems supported are FAT16 or FAT32.
File types and rates supported
The 46-120 MEDIA versions will replay audio files recorded in
either WMA or MP3 formats, as follows:
• WMA: bitrates from 32 kpbs to 384 kbps
• MP3: MPEG 1/2/2.5, layer 2 or 3 decoding at bit rates
from 32 kpbs to 384 kpbs, including VBR.
Sample rates supported are: 8 kHz, 11.025 kHz, 12 kHz,
16 kHz, 22.05 kHz, 24 kHz, 32 kHz, 44.1 kHz and 48 kHz
Both types of audio file may be present on the memory
device; the media player will not differentiate between them
in any way. The files may be in the root directory of the
memory, or in folders, or folders within folders. When the
memory device is plugged in, the media player will scan it and
identify all compatible files in all folder locations, and make
them available for playing. Only one memory device at a time
(USB device or SD card) may be connected. Note that it is
not possible to create a playlist from the 46-120
MEDIA ’s front
panel controls.