Russound D250LS - FRONT and Back PANEL FEATURES; Video Input; Gain Controls; Default Input

6 Russound D250LS Installation Manual Rev. 2
FRONT AND BACK PANEL FEATURES
Power LED
On start-up, the rst LED lights red to show power on. When the amplier
goes into standby, the LED will light amber.
Power Switch
Turns the amplier on/o. This switch does not disconnect the main power
feed from the amplier; this requires that the power cord be unplugged from
the outlet.
Line Input
The Line audio input is a sensing input that will activate the amplier when
an audio signal from a source is present. Only the Left input is used for bridged
mode operation.
Video Input
The Video Input is a sensing input that activates the D250LS when a video
signal is present.
Gain Controls
Left and Right gain controls independently adjust the sound level for each
channel. When used in the bridged mode only the Left control is used.
Delay Time
Muting delay can be adjusted from about 5 seconds to 4.5 minutes. When an
audio signal is not present, this delay setting will automatically switch the amp
to the Default input mode after the preset period of time.
12VDC Trigger In/Out
The 12V Trigger In controls the amplier switching from the default input
(distributed audio system) to a local source. The Trigger Out provides 100mA
12V max. This can be used to drive other 12V triggered devices. The delay and
audio sensing are bypassed when the 12V trigger input is used.
Stereo/Bridge Mono Switch
Sets the pair of amplier channels for stereo or bridged mono operation.
Default Input
Default Input is a pass-through input for the whole-house system. If no signal
is input to the "Line In" or the "Amplied In," the Default input will be connected
directly to the A and B speaker output.
Amplied In
The amplied In is a sensing input that is used to amplify a high-level signal
from a small amplier or TV.
Speaker A/B Outputs
The A and B speaker outputs are in parallel to the amplier output. The
minimum load in stereo mode is 4 ohms. This can be used to drive up to 2 pairs
of 8-ohm speakers or 1 pair of 4-ohm speakers. The minimum load impedance
for bridged mode operation is 8 ohms, Speaker B only.
Fuse Receptacle
Holds a replaceable fuse for AC power input connection. Fuse rating for North
America and for Europe is T3.15AL 250V.
AC Input
The autoswitching AC voltage input for the North American model is 100-125
VAC at 60Hz (European model, 220-240VAC at 50Hz). This receptacle accepts
a 3-prong IEC 320 type connector. A detachable 3- terminal power cord is
included.