Cloud Contractor Series Petunjuk Keselamatan - Halaman 6
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Halaman Cetak
Rear panel – connections and controls
7
1.
LINE 1, LINE 2 and LINE 3 – stereo line inputs on phono (RCA) connectors. Connect music sources (CD players, PCs,
satellite/TV receivers, etc.) here; the stereo signals are summed internally to mono. Each input has an associated GAIN
control with a range of 20 dB; adjust these so that each music source connected has approximately the same volume.
LINE 1 may be set to take priority over the other two – see [4] on front panel.
2.
MIC1 IN and MIC2 IN – microphone inputs. Both inputs are balanced: MIC1 IN uses a 3-pin, 3.5 mm-pitch screw-terminal
connector: see rear panel for pinout; a mating connector is supplied. MIC2 IN uses a ¼" (6.35 mm) 3-pole TRS jack socket
(T=hot, R=cold, S=screen). Each mic input has an associated GAIN control with a range of 40 dB: these should be adjusted
so that the front panel MIC LEVEL controls can be turned to maximum without distortion or feedback occurring. 15 V
phantom power is available at either/both mic inputs if needed, by moving internal jumpers – see "Table of internal jumpers"
on page 10. The mic inputs may be set to take priority over the music sources – see [8] on front panel.
The two output connectors ([3] and [4] below) have a single removable safety cover
which should be removed (two screws) to make the connections, and then refitted.
LOW IMPEDANCE output – amplifier output for driving low-impedance loudspeakers. The connector type is a 2-pin 5
3.
mm-pitch screw-terminal type: a mating connector is supplied. If connecting multiple loudspeakers, installers must ensure
that the total impedance is not less than 4 ohms.
4.
C.V. OUTPUTS – amplifier output for driving 25/70/100 V-line loudspeaker distribution systems. The connector type is a
4-pin 5 mm-pitch screw-terminal type: a mating connector is supplied. Only make connections to the 0V terminal and one
other, depending on the voltage rating of the system in use. A 70 Hz high-pass filter limits the LF content to reduce the
possibility of transformer core saturation: this filter may be bypassed if wished by moving an internal jumper, see "Table of
internal jumpers" on page 10.
Do not attempt to make connections to this output while the mixer-amplifier is powered, as there may be voltages
present at the terminals of sufficient magnitude to cause an electric shock.
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VMA Series Installation Guide V1.0
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5
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VMA 120
NOTE
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