Cloud VMA240 Petunjuk Keselamatan - Halaman 11

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Cloud VMA240 Petunjuk Keselamatan
Table of internal jumpers
The VMA120 and VMA240 will function as required "out of the box" for the great majority of installations. However, there
are various internal PCB jumpers which may be moved by the installer to enable certain additional functions or to modify the
manner in which some features operate. These are summarised in the table below. In the "ACTION" column, the description in
bold is that of the default (factory) setting.
LOCATION JUMPER
FUNCTION
Mic 1
J200
phantom power
Mic 2
J202
phantom power
Mic 1
J201
hi-pass filter
Mic 2
J203
hi-pass filter
Rear PCB
Mic 1 priority
J204
trigger source
Mic 2 priority
J205
trigger source
Line 1 priority
J1
trigger source
70 Hz
J100
hi-pass filter
Music Mute
Front PCB
JP1
function
If it is necessary to move any of the jumpers, first ensure that the mixer-amplifier is disconnected from the AC power supply
before removing the lid.
OFF: Mic 1 phantom power off
ON: 15 V phantom power available at Mic 1 input
OFF: Mic 2 phantom power off
ON: 15 V phantom power available at Mic 2 input
OFF: Mic 1 input has full LF frequency response
ON: Mic 1 input LF frequency response is rolled off below 100 Hz
OFF: Mic 2 input has full LF frequency response
ON: Mic 2 input LF frequency response is rolled off below 100 Hz
PRE: Mic 1-over-music priority is triggered by Mic 1 pre-GAIN signal
POST: Mic 1-over-music priority is triggered by Mic 1 post-GAIN signal
PRE: Mic 2-over-music priority is triggered by Mic 2 pre-GAIN signal
POST: Mic 2-over-music priority is triggered by Mic 2 post-GAIN signal
PRE: Line 1 priority is triggered by Line 1 pre-GAIN signal
POST: Line 1 priority is triggered by Line 1 post-GAIN signal
OFF: the power amplifier stage has full frequency response
ON: the power stage LF frequency response is rolled off below 70 Hz
OFF: Shorting the Music Mute contacts will mute the currently
active music source
ON: Shorting the Music Mute contacts will mute the mixer-amplifier output
entirely
ACTION
VMA Series Installation Guide V1.0
11