2
DESCRIPTION OF THE SYSTEM.
The system consists of three devices:
1.
Mixer/amplifier model QX-240 of the SIMAX trademark (see handbook).
2.
A-1 microphone station of the LDA trademark (see handbook).
3. Amplifier BA-2500 of the LDA trademark (see handbook).
The input sources to the system are connected to the inputs of the QX-240, with the input
1 of said equipment reserved for the microphone A-1 to active the priority. In the
microphone, only pins 1, 2 and 3 were connected for the corresponding positive, negative
and ground of the audio. Pins 4 and 5 of the microphone weren´t connected.
In the amplified outputs of the QX-240 you can connect the speakers with only one line
with a maximum load of 240W, or several lines whose sum mustn´t exceed this maximum
power (for example, in cannel 1 outputs 180w and cannel 2 exit with 60W of load).
The pre-
amplified “PRE-AMP out” output of the QX-240 will be connected to the inputs of
the BA-2500 amplifier. In the amplifiers of the BA series each output is independent so we
will have to make a bridge between output 1 and 2.
3
BALANCED AUDIO CONNECTION.
In all the connections and wiring of the system the audio must be balanced. Balanced
audio consists of sending an audio signal on a communication channel, it is transmitted in
duplicate, one of them with inverted polarity:
Содержание SIMAX QX-240
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