X
X
X
T
T
T
E
E
E
E
E
E
L
L
L
E
E
E
C
C
C
T
T
T
R
R
R
O
O
O
N
N
N
I
I
I
C
C
C
▫
User’s Manual
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7
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11
9. Power Supply
The unit is expected to work with 230 VCA –
50/60 Hz distribution system.
In case of power dysfunction, check the outside
protection fuses and eventually replace them with
others of same calibration; if one of them burns
out immediately, do not go on and have check the
unit by qualified personnel.
Take away plug from 230 VCA electric power
socket always, before removing fuses and, in any
case, open the unit framing.
10. Connections
10.1. General criteria
In order to allow the equipment to work correctly,
it is advisable to comply with a number of general
criteria when making the connections:
Avoid positioning cables or microphones on
the cabinet of the equipment.
Avoid laying the signal lines parallel to the
power-supply lines. Keep a minimum distance
of 30/40 cm.
Position the input lines and the output lines at
a distance from one another.
In order to avoid acoustic feedback (the
Larsen effect), position the microphones out
of the angle of coverage of the loudspeakers.
10.2. Balanced Mic / Line Inputs
The 6 female XLR input sockets (26) for the mic /
line level signals are located on the rear panel of
the equipment. The figure Fig2. shows the
connections to these sockets. These inputs are
electronically balanced. The mic / line sensitivity
could be adjusted through the Gain control (2)
placed on the front panel.24Vdc “phantom” supply
could be joint to each socket (on the same
balanced phonic line), through the multi-micro
switch (27) placed on the back panel; therefore,
before connecting a microphone it should pay
attention to the model (if dynamic or electret). In
case of dynamic microphone do not insert 24 Vdc;
insert it with electret microphone only.
CH5 and CH6 socket cannot be used at the
same time of AUX 1 and AUX 2 sockets,
because electronic circuits and controls are in
common: CH5 with AUX 1, CH6 with AUX 2.
10.3. Pre Out
The Jack output socket (21) for the preamplified
signal are located on the rear panel of the
equipment. The figure Fig2. shows the
connections to this socket. This output is
electronically balanced.
10.4. Link In
The Jack input socket (22) for the eventual
connection from other external audio source,
directly “mixed” to preamplifier are located on the
rear panel of the equipment. The figure Fig3.
shows the connections to this socket. This input is
unbalanced and main level control dependant.
10.5. Effect
The Jack input sockets (23) for the eventual
connection of outside sound processing devices
(equalizer, level processor, etc.) in order to
improve sound reproduction quality and to correct
the environment response, or to satisfy particular
specifications requirements.
Mic / Line inputs are involved with the above
mentioned insert devices.
The figure Fig4. shows the connections to this
socket. This input is unbalanced.
3 = COLD -
2 = HOT +
1 = GND
3
2
1
Fig1.
XLR Bal Input / Output Pin-out
GND
COLD -
HOT +
Fig2.
Jack Bal Input / Output Pin-out
GND
HOT +
Fig3.
Jack Unbal Input / Output Pin-out
10.6. AUX 1 / AUX 2
The 2 couple of mono female RCA input sockets
(25) for the AUX sources are located on the rear
panel of the equipment. These inputs are
unbalanced.
10.7. REC
The couple of mono female RCA output socket
(24) for the REC preamplified signal and 3 band
EQ of each channel processed is located on the
rear panel of the equipment. This output is
unbalanced.
