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. M A C H I N E O P E R AT I O N
Amplifier Function
The role of amplifiers is to enlarge the audio signal from audio sources, such as MIC,
computer and MP3 etc. to boost speaker or pure amplifier to work.
Constant Voltage Amplifier
The output form of constant voltage amplifier output is constant voltage. It requires a certain
load of rated voltage. Constant voltage amplifier connects with speakers by the way of multiple
speakers in parallel form, as long as the total power does not exceed the amplifier total power,
there can be many speakers in a wire. Constant voltage amplifier output voltage is in fixed form,
in fact, the audio amplifier output voltage is subject to change, such as in a moment the constant
voltage amplifier output is 100V, in this moment, amplifier connects with a speaker, the power
amplifier output is 100V, connects with two three, or more speakers, the power amplifier output
is still 100V, of course, this is in the situation of enough power for the amplifier. This constant
voltage amplifier characteristics is very suitable for school to use, for example, in a school,there
are 24 classes, most students are in classroom, turn off the speakers, the speaker and the entire
broadcasting system is disconnected, it is because we use the constant voltage amplifier, a
speaker is disconnected, and it will not affect the voltage in the entire system line, so it will not
affect the broadcast in other classes. Constant voltage amplifier and speaker connections must
be parallel. In the public address system, the distance between speaker and amplifier may be
more far away, in shopping malls, machine room may be on the first floor, and as far as possible.
Function
Read Before Using The Amplifier
Volume Control
The volume depends on the performance of the speaker, position and some other factors. Pls avoid
to use the amplifier in the status of high volume for a long time.
Choice Of The Audio Source
In order to play the best performance of this device, please select the balanced signal sources after
processing by the preamplifier. Local input sensitivity is set to be 0dB (0.77V).
Connection Method
Please do not power on until all connections are completed. The audio cable connection need to
be fixed properly, otherwise it will reduce the sound quality, produce noise, or even damage the
device. Constant Voltage speakers are paralleled connected with the device (constant voltage
amplifier). In a supermarket, there is dozens or hundreds of speakers after an amplifier, these
speakers are on a wire. See wiring diagram of the device for the connection method, the load
with constant voltage speaker (100V) or all of the speakers, the power is not greater than the
power of the amplifier's rated output power.
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Summary of Contents for T-2120D
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