Russound D850 Installation Manual page 6

BACK PANEL FEATURES
Power/Standby LED
This LED lights red when any zone is active or the amplifier is in standby mode.
Zone LED
When a zone is powered on, the corresponding LED lights blue. When a zone
is OFF, the LED is off (standby mode). If a short circuit happens on the speaker
outputs, the LED will blink fast red and blue.
Bus 12VDC Trigger In/Out
The Bus 12VDC Trigger In is used to activate all zones that are using the Bus
Input and disables other zone triggers or signal sensing on those zones when
it is used. When the Bus 12VDC Trigger is used, all Bus-controlled zone LEDs
will be blue and active.
If the Bus Trigger In has 12V applied to it, only the 12V Bus Trigger Out will
have 12V and the Zone Trigger Outputs will not.
Bus Input/Output
The bus line input is an optional input that can be used to connect a single
source to multiple zones. The bus line output is a passive passthrough of the
Bus Input and can be used to daisy chain the source to other amplifiers in the
system.
Line Input
The line audio input for each zone is a dedicated sensing input that will
activate the zone when an audio signal from a source is present.
Line/Bus Switch
Sets the zone input to the Line Input or the Bus Input.
Speaker Outputs
The minimum speaker impedance is 4 ohms for Stereo Mode and 8 ohms for
Bridge Mode.
Gain Controls
Left and Right gain controls independently adjust the sound level for each
channel. When used in Bridge Mode only the Left control is used.
Power Switch
Turns the amplifier on/off. This switch does not disconnect the main power
feed from the amplifier; to disconnect the main power, the power cord must
be unplugged from the outlet.
Fuse Receptacle
Holds a replaceable fuse for AC power input connection. Refer to the
specifications on page 10 for the fuse ratings.
6
AC Input / Voltage Switch
Voltage is set with a selectable switch for 115V or 230V operation. The AC
voltage input for the North American model is 115VAC at 60Hz (International
model, 230VAC at 50Hz). This receptacle accepts a 3-prong IEC C14 type
connector. A detachable 3- terminal power cord is included. The international
models include power cords for the UK, Europe, and Australia.
Zone 12VDC Trigger In/Out
The Zone 12V Trigger In is used to activate a specific zone. The Zone Trigger
Out can be used to trigger other 12V devices. The delay and audio sensing are
bypassed when the 12V Zone Trigger Input is used. When a Zone Trigger is
active, the zone LED will be blue. If no voltage is present in the Zone Trigger, the
Zone LED will be off.
Standby
Standby delay can be adjusted to either 5 seconds, 5 minutes, or 10 minutes
by using the DIP switches on the rear panel. This delay is selectable per zone.
When an audio signal is not present, the amplifier will automatically go into
standby mode after the preset period of time.
The default position for the DIP switch is a 5-second delay. The time delay is
selected by moving the DIP switch to the down position.
Note: One and only one DIP switch must be in the Down position at any time.
Activating more than one DIP switch can lead to erratic audio operation.
Standby Mode
The amplifier will go into Standby mode when audio signal or trigger is
not present, and after the minimum delay time has timed out. The amplifier
consumes 0.5 Watt or less current while in standby power mode.
Stereo/Bridge Mono Switch
Sets each zone amplifier for stereo or Bridge mono operation.
Compatibility with autoformer-based volume controls
The D850 and D1650 amplifiers have been tested to work with all Russound
autoformer-based volume controls.
In order to use the D-series amplifiers with auto-former based volume controls,
please refer to the Tech Tip on the Russound Dealer Portal titled "Using a D-Series
amplifier with autoformer-based volume controls".
Russound D850, D1650 Installation Manual
This illustration shows the
DIP switch configured for a
5 second delay.