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Loudspeaker connectors
The SDAI 2175´s loudspeaker connectors accept banana plugs, spades or bare wire ends
up to 5 mm in diameter. Connect the wires from each loudspeaker to each channel's + and
– terminals. Do not make any other connections to the output terminals. The loudspeaker
cable is inserted into the slot in the loudspeaker terminal, and the terminal is tightened
firmly.
WARNING: Always disconnect the SDAI 2175 from the mains before
changing any connections to its inputs or outputs.
WARNING: Make sure that no conductive part of the speaker wiring is
accessible. Do not connect loudspeakers with uninsulated terminals.
When the SDAI 2175 is operating, there is 35V DC on its output terminals with reference
to ground.
Do not connect the output from the amplifier to any other amplifier's output
or any other voltage source. Do not attempt to operate the amplifier in
bridged mono mode.
I
nput connectors
The SDAI 2175 has input connectors for both balanced (XLR) and unbalanced (RCA)
signals. The input impedance of the balanced input 7 is 10 kOhm for the unbalanced input
1-6 the input impedance is 100kOhm
Balanced inputs
The balanced XLR inputs are wired in accordance with IEC268:
Pin 1: Chassis and ground.
Pin 2: Hot (+).
Pin 3: Cold (-).
Shell: Chassis and ground.
Unbalanced inputs
The unbalanced RCA inputs are wired in accordance with normal practice:
Shell: Chassis and ground.
Pin: Hot (+).
Trigger connectors
The SDAI 2175 is equipped with a TRIGGER OUT 3.5mm mono jack connector. The
Trigger signal is a 12V short circuit protected output signal for powering up external
equipment when the SDAI 2175 is on, e.g. remotely connected SDAI 2175 power
amplifiers or active subwoofers.