25
b)
Use the selectors to choose the source type to connect
(fig.3 ref.a)
:
LINE
for AM/FM tuners, CD players etc.
PH
for condenser microphones with +48V phantom power
MIC
for dynamic microphones
c)
“Dry Contact”
Each input has a “Dry Contact” that has the functions “C
hime Activation
” and “
Force Input Muting
”. These functions
can also be activated simultaneously and are subjected to the (ON – OFF) position of the dip switch
(fig.2, ref.6 e 7):
“Chime Activation”
The amplifier will play an alert sound from the loudspeakers line when the contact is closed
(fig.3 ref.C)
with the
relative dip-switch PIN ON
(fig.2 rif.7)
.
“Force Input Muting”
The control forces the muting of AUX inputs and other inputs
(fig.2, ref.2)
with the relative VOX PIN
(fig.2, ref.6) OFF
when the contact is closed
(fig.3 ref.C)
. Inputs will remain mute while the dry contact remains closed. This function
is particularly useful with very weak audio signals, which may cause constant connections/disconnections of the
VOX function, resulting in alternating the signal output.
Note: the dry contact will not mute the inputs that have VOX ON.
Each INPUT 1 ÷ INPUT 4 has a VOX function that can be switched on and off using the PIN
(fig.2, ref.6):
while the
VOX circuit of one of the channels with VOX
ON
(enabled) detects the presence of an audio signal on the
relative
input
(fig.2, ref.2)
, the AUX channels
(fig.2, ref.3)
and the channels with VOX
OFF
(disabled) will be muted, while all
the channels with VOX
ON
will be mixed in the output.
3.
AUX IN
The device has 3 AUX inputs that can be selected from the front panel
(fig.1 ref.7)
:
The R and L sockets allow to connect the right (R) and left (L) channels through RCA connectors. You can connect to this
stereo input an external sound source.
4.
REC OUT
Unbalanced output line to be used for recording functions.
5.
Input AMP IN – Output PRE OUT
As a standard the AMP IN input is connected to the PRE OUT output with a jumper.
You can optimise the amplifying signal inserting an external unit (e.g. equaliser, processor, etc.) between the two
terminals. For the connection check the drawing.
6.
VOX PRIORITY ENABLING and MIC PRIORITY
Vox Priority Enabling
enables the VOX function on the relative INPUT 1 ÷ INPUT 4 inputs:
Summary of Contents for ATMP160XL
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