Controls And Functions - dBTechnologies OPERA 110 MOBILE User Manual

1. CONTROLS AND FUNCTIONS (Fig.1)
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"OVERLOAD" INDICATOR
The indicator lights up red to indicate that the internal limiting circuit has tripped to
prevent amplifier distortion and protect the speakers against overloads.
"MASTER VOLUME" CONTROL
This control regulates speaker output volume.
"CD-AUX VOLUME" CONTROL
This control regulates the volume of the input signal to the RCA "STEREO CD-AUX
INPUTS" connector.
"MIC/LINE VOLUME" CONTROL
This control regulates the volume of the input signal to the XLR/Jack 1/4" (6.3mm)
"MIC/LINE BAL INPUT" connector
"WIRELESS VOLUME" CONTROL
This control regulates the input volume of the radio microphones.
"VOICE TONE" CONTROL
This control permits regulating the tones in the microphone and radio microphone
channel.
"WIRELESS RX" RADIO MICROPHONE SUPPLY SWITCH
This switch permits switching off the radio microphone receiver, thereby increasing
battery life in the case of this not being used.
SENSITIVITY SWITCH
Place the switch in MIC position to use a balanced or unbalanced microphone.
Place the switch in LINE position to use a balanced or unbalanced source at line
level.
"MIC/LINE BAL" INPUT CONNECTOR
Balanced input that can be used for connecting up a low-impedance dynamic
microphone, or a high-level audio source (eg. preamplifier, mixer, recorder, CD
player, musical instrument, etc.,).
"STEREO CD-AUX" INPUT CONNECTOR
Through the RCA phono connectors, this input permits easy connection of CD, DAT,
cassette players, etc.... .
"UNBAL MIXED LINE" OUTPUT CONNECTOR
This output can be used to send the mixed audio signal to another amplified
speaker, to a recorder or to a supplementary amplifier.
To make the connection, use an unbalanced 1/4" (6.3mm) jack connector.
"POWER" SWITCH
This switch can be used to switch the speaker on and off, but it has no effect on the
battery recharge circuit.
"BATTERY STATUS" INDICATOR
The two-colour indicator lights up green to indicate the speaker is on and operating
correctly.
This indicator comes on red to indicate the battery is low.
" BATTERY CHARGE" INDICATOR
The red indicator stays on steady during battery recharging.
Once the battery has been completely recharged, this indicator will start flashing.
D.C. POWER ADJUSTMENT AT OUTPUT POTENTIOMETER
By means of this screwdriver adjuster, the output voltage at the D.C. jack connector
(16) can be changed.
The output voltage can vary between 1 and 10VDC with maximum current 100mA.