8
DISTRIBUTION AMPLIFIER/ZONE MIXER/MIC SPLITTER DA-410.
CONNECTING TO THE MAINS
The connection of the distribution amplifier/zone mixer/mic splitter power supply to the
mains takes place by a standard cord included in the box.
Make sure that the unit power switch is at 0 position (turned off).
Insert the female I.E.C. connector of the tripolar cable into the unit power supply
male connector, placed at the rear panel.
Insert the male connector of the tripolar cable into the mains plug.
Turn on the unit power switch. In that moment the MONITOR SIGNAL
SELECTOR LED indicator will light, indicating that the unit is turned on.
CAUTION:
Make sure that the mains voltage is the correct as well as their fuse is the
adequate.
INPUT CONNECTION
The distribution amplifier input signals is carried out through four XLR-3-31 female
connectors, two per stereo channel. The input connections are balanced, with a nominal
impedance of 5 k
Ω
(2,5k
Ω
unbalanced) with the input set-up in line mode and 2 k
Ω
(1k
Ω
unbalanced) with the input set-up in mic mode. The next list shows the input pins correspondence
as A.E.S recommendation practice:
INPUT CONNECTOR XLR-3-31
PIN 1
GND
PIN2
HOT (+)
PIN3
COLD (-)
The input connection depends on two factors, the first is the type of input signal balanced or
unbalanced, and the second the ground configuration of the sound source (floating or ground-
referenced). The next pictures shows some of the different possibilities of connection, relying on the
type of input signal, balanced or unbalanced and according to the ground configuration of the
equipment (floating or ground-referenced).
NOTE:
All the inputs and outputs of the unit accepts phantom power.
In the next diagrams, we use the following symbols:
Sound source with mains cord without ground connection.
Sound source with mains cord with ground connection.
Sound source with the EARTH-LINK OFF.
Sound source with the EARTH LINK ON.
