Power Connector - LD Systems IMA 60 Bedienungsanleitung

POWER CONNECTOR

1
IEC socket to supply mains power to the device (power cable included in the packaging).
FUSE
2
Fuse holder for 250 V miniature fuses (5 × 20 mm). CAUTION: Only replace the fuse with a fuse of the same type (see note on the housing). If the fuse
blows repeatedly, please contact an authorized service center..
ON/OFF
3
Rocker switch to turn the device on and off.
EMERGENCY
4
5-pole terminal block for the installation of an acoustic emergency call system. The poles +, - and G correspond to a balanced line input. Poles C and
+ are used for the connection of a separate mute switch (terminal block included in the packaging).
The red CLIP LED indicates, if the input is being operated at the distortion limit, that you should reduce the signal level using the GAIN control or
on the playback device so that the CLIP LED is no longer lit. The VOX control (Voice Operated Exchange) makes it possible to set a threshold for the
emergency audio signal in order to activate an automatic mute switching circuit. When the level at the EMERGENCY input reaches the threshold
set, all other microphone and line channels are muted. This also happens if the contact closure of the channel is closed using an external mute
switch (poles C and +), regardless of the setting of the VOX control. This makes sure that the emergency signal can be heard clearly. In addition, in
both cases the EMERG indicator is lit on the front of the amplifier. As soon as the level of the emergency signal falls below the set threshold and/or
the contact closure for the channel is open again, the other channels are no longer muted and the EMERG indicator goes out. With this setting, the
EMERGENCY channel always has the highest priority. The emergency signal is routed to the amplifier and the speaker output internally.
The level of the emergency signal is not influenced by the current setting of the main volume control (master volume), but is set via the GAIN
control. If the VOX control is set to minimum (turned all the way to the left), automatic muting via the VOX switching circuit is deactivated and the
EMERGENCY channel can be used as an additional line channel.
MIC/LINE 1
5
For a microphone or line channel, the connection can be done via the XLR/jack combo socket as well as the terminal block. In this case, the poles
+, - and G are provided on the terminal block for the balanced input signal. Poles C and + are used for the connection of a separate mute switch
(terminal block included in the packaging). If there is a line signal on the XLR/jack combo socket or the terminal block, switch the MIC/LINE channel 1
to LINE mode using the corresponding MIC/LINE button (button pressed). If a microphone is connected, activate MIC mode using the MIC/LINE button
(button not pressed). When using a condenser microphone, you also need to activate the 24 V phantom power supply (PHANTOM ON/OFF button
pressed: ON). Always make sure that the microphone is connected and the channel volume is set to minimum before turning on phantom power.
Before you disconnect the microphone from the amplifier, turn the channel volume to minimum and deactivate the phantom power supply.
The red CLIP LED indicates, if the input is being operated at the distortion limit, that you should reduce the signal level using the GAIN control or on
the playback device so that the CLIP LED is no longer lit. The contact closure (poles C and +) offers the possibility to mute the MUSIC channel using an
external switch/button. In addition, the internal chime tone function can be activated in this way when the chime circuit is enabled. The volume for
the chime tone is controlled via the CHIME control on the back of the amplifier (channel MIC/LINE 2). If the control is turned all the way to the left,
the chime circuit is disabled. If the internal chime tone function is active, MIC/LINE 1, MIC/LINE 2 and MUSIC channels are muted for the duration of
the signal tone. The VOX control makes it possible to set an audio threshold value for an automatic mute circuit for MIC/LINE input 1, that mutes MIC/
LINE 1 and MUSIC channels as soon as its input signal reaches the predefined level. The PRIO LED is lit on the front if the contact closure or VOX circuit
is activated. As soon as the input level of the audio signal falls below the set threshold and/or the contact closure for the channel is open again,
the other channels are no longer muted and the PRIO indicator goes out. In such a configuration, MIC/LINE 1 has priority over MIC/LINE 2 and MUSIC.
Adjust the volume of the channel using control 1 on the front of the amplifier.
MIC/LINE 2
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Microphone/line channel. The connection can be done via the line RCA socket (mono summed) as well as the terminal block. In this case, the
poles +, - and G are provided on the terminal block for the balanced input signal (terminal block included in the packaging). If there is a line
signal on the RCA sockets or the terminal block, switch the MIC/LINE channel 2 to LINE mode using the corresponding MIC/LINE button (button
pressed). If a microphone is connected to the terminal block, activate MIC mode using the MIC/LINE button (button not pressed). When using a
condenser microphone, you also need to activate the 24 V phantom power supply (PHANTOM ON/OFF button pressed: ON). Always make sure that
the microphone is connected and the channel volume is set to minimum before turning on phantom power. Before you disconnect the microphone
from the amplifier, turn the channel volume to minimum and deactivate the phantom power supply. The red CLIP LED indicates, if the input is being
operated at the distortion limit, that you should reduce the signal level using the GAIN control or on the playback device so that the CLIP LED is no
longer lit.
Tip: You can also use the contact closure (poles C and +) from MIC/LINE 1 to give MIC/LINE 2 channel priority over the MUSIC channel. In addition,
external switches/buttons for MIC/LINE 1 and MIC/LINE 2 can be connected in parallel to the contact closure.
7 MUSIC
Line channel for the connection of playback devices such as a CD or MP3 player. The MUSIC channel includes a Bluetooth module. RCA sockets are
provided on the back for connecting two stereo line input signal sources (CD symbol or cable symbol). The desired signal source is selected using
a touch-sensitive button on the front of the amplifier. All stereo signals are mono summed internally.
6