Behringer B1220DSP Guía Del Usuario

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EUROLIVE B1220DSP
4.2 PA systems
PA is short for "public address" and includes all applications
that involve a larger audience. This example uses a mixing
console as its central unit for system operation and connections.
All microphones, feeding and effects devices, etc. are connected
to the mixing console, which is then linked to the B1220DSP.
Connecting a mixing console:
= Turn the LEVEL controls ( 3 ) fully to the left.
= Connect the left output of the mixing console to the MIC/
LINE connector of the left loudspeaker, and the right mixing
console output to the right loudspeaker.
= Switch on the B1220DSP.
= Raise the level of the mixing console output to a level of
0dB.
= Turn the LEVEL controls ( 3 ) gradually clockwise to set the
volume of your choice. When the CLIP LEDs light up, this
indicates that the maximum volume has been reached.
Fig. 4.2: Connecting a mixing console
Instead of a mixing console, you can also connect a stereo signal
source, e.g. a CD player. In this case, one B1220DSP is
connected to each of the outputs of the signal source.
Connecting a stereo signal source:
= Turn the LEVEL controls ( 3 ) fully to the left.
= Connect the left output of the stereo device to the MIC/LINE
connector of the left loudspeaker, and the right stereo device
output to the MIC/LINE connector of the right loudspeaker.
= Switch on the B1220DSP.
= Raise the output level of the stereo signal source (if
available), ensuring that it does not overload the input.
= Turn the LEVEL controls ( 3 ) gradually clockwise to set the
volume of your choice.
Linking several B1220DSP:
If you need more sound pressure, for example in larger rooms,
simply increase the number of loudspeakers on each stereo
side. You could place two B1220DSP on each stereo side and
interconnect them (see Fig. 4.3). The loudspeakers can be
stacked or placed one beside the other. When you stack the
speakers, the carrying recesses built into the cabinets ensure
the stability of the stack. You can connect a microphone, a mixing
console or stereo signal source.
= Connect the LINE OUT connector ( 6 ) of the first B1220DSP
to the MIC/LINE input of the next B1220DSP.
+ With several B1220DSP speakers connected to each
other, their input impedance will be reduced by half
(two B1220DSPs), or to one third (three B1220DSPs),
etc. Always use the output impedance of the mixing
console as a basis for your calculations!
Fig. 4.3: Linking several B1220DSP speakers
4. Application examples
EUROLIVE B1220DSP
(R)
EUROLIVE B1220DSP
(L)
EUROLIVE B1220DSP
EUROLIVE B1220DSP