DAPAudio PA180, Руководство пользователя

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5
Fig. 2
11-14) INPUT 1-4: These four unbalanced combination jack 6.3mm inputs, dynamic microphone
(30-600 )or a high level sound source (e.g. AM/FM tuner, cassette desk, CD player, etc.).
INPUT 1 has a "Voice Priority" function that mutes all the other inputs as soon as a message is
transmitted with a microphone; it is possible to exclude this function by calling a qualified SERVICE
CENTER.
15) Tel. Paging input level control
This control lets you set the volume of the sound source, which is connected to the "Tel. Paging"( 25 )
terminals. Turning the control clockwise increases the volume of the corresponding source. We
recommend to leave the control of the momentarily not used inputs at their minimal setting "0".
16) Music signal monitor output level control
The control lets you individually set the volume of the sound source output that is connected to the
"MONITOR OUTPUT 1W/8
" ( 23 ) terminals. Turning the controls clockwise, increases the volume of
the corresponding source.
17) Input sensitivity switch (AUX IN)
Setting this switch to the "CD" position, the "AUX IN" input is suitable for connecting to a CD player
signal output.
By setting this switch to the "TUNER" position, the "AUX IN" input is suitable for connecting to an AM/FM
radio. By setting the switch to the "TAPE" position, the "AUX IN" input is suitable for connecting to a
cassette player.
18) "AUX IN" inputs
The "R" and "L" sockets permit the input of the right ( R ) and left ( L ) channels of an audio source with a
high-level output signal, such as an AM/FM tuner, a cassette deck, a CD player, etc. Use input
sensitivity switch (
17 ).
19) "PREAMP OUT" socket
This output sends the sum signal of all the connected sources and can be used to feed an external
power amplifier, a signal processor (e.g. an equalizer), or any other external device. The unbalanced
signal is affected by the individual input controls. Before using the PREAMP OUT you have to remove
the bridging-strip between this socket and the "MAIN IN" socket (
20 ) and preamp out terminal sockets.
20) "MAIN IN" socket
After removing the bridging-strip between the "PRE OUT" and the "MAIN IN" sockets you can include
an external signal processor (e.g. an equalizer) in the audio-chain between the pre-amplifier and the
power output stage of the power amplifier. This opportunity provides a proper solution whenever shaping
or improving the audio signal is necessary (adjusting delay times, equalizing, eliminating unwanted
feedback from the mic to the loudspeakers, etc.). The input is unbalanced.