JBL DA850 DA1650 Owners Manual | rev1.2 Draft20231009
Pg 11 of 16
©2023 Harman International | Features, Specifications, and Appearance subject to change without notice.
Setting POWER MODE
The three-position POWER MODE switch has three settings:
ON
:
Front panel standby button activates and deactivates standby mode when the DA amplifier is
connected to AC power. When the amplifier is connected to AC power, the standby button LED
will glow dim BLUE indicating that the unit is in the standby mode. In this state, the power
amplifier section is not activated, and the unit consumes minimal AC power. Pressing the
standby button from this state will activate the power amplifier section for all zones and the
standby button LED will light up WHITE indicating that the DA is powered on.
12V
:
Enables control for remote 4.5V-12VDC trigger signals used to activate and deactivate the
standby mode of the amplifier.
The Trigger In and Out connections can be used to activate and deactivate the standby mode
from devices such as remote control systems, preamplifiers or other external devices. The
Trigger In and Out connections offer 1/8” (3.5mm) mono mini-plug connectors. Use the Trigger
In for making connections to external control devices that will activate and deactivate the DA
amplifier standby mode. The Trigger Out does not provide DC power on its own but can be
used for making Trigger In daisy-chain connections to additional DA series amplifiers or other
components that need to mimic the amplifier’s power state.
NOTE:
When a remote trigger is connected it will override the front panel standby
button operation.
To install a trigger cable:
Power the controlling source and DA amplifier off.
Connect the trigger cable to the controlling source and the DA amplifier.
After the connections are made, power on the controlling source and the DA amplifier.
After the source unit is fully powered up, the LED power indicator on the front of the
amplifier should be lit WHITE.
Verify the trigger is working by putting the source unit into standby mode. The DA
amplifier after a short delay will also go into the standby mode and the power indicator
will light up dim BLUE.
Once you have verified that the trigger cable is working, only use the source unit to
power on and off your DA series amplifier.
AUTO
:
Enables the audio Signal Sense circuitry for the Global and Local inputs. The Signal Sense
circuitry allows the amplifier to activate a zone when an audio signal is detected at the
corresponding input and deactivate a zone when no audio signal has been present for 30
minutes.
When the amplifier is powered on and the Power Mode switch is set to the Auto position,
amplifier channels with signal present will be active. Channels without signals present will
remain switched off until signals are detected. In this mode, power consumption is lowered by
switching off idle channels and audio performance is improved by eliminating crosstalk on
adjacent unused channels. In cases where Auto is enabled and no audio signals are present
on any channels for more than 30 minutes, all channels will be switched off and only the front
panel standby button will slowly flash dim BLUE while the amplifier continues to monitor all
inputs for a signal.
NOTE:
When a remote trigger is connected it will override the front panel standby
button operation.
