Russound R1250MC User Manual page 4

R1250MC AMPLIFIER
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Bus Input/Output: The bus line input is an optional
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Fuse Receptacle: Holds a replaceable fuse for AC
input that can be used to connect a single source power input connection. Fuse rating for North
to multiple zones. The bus line output is a passive America and Europe is T1 OAL 250V.
passthrough of the bus input and can be used to
AC Input: The AC voltage input for the North
daisy chain the source to other amplifiers in the
system.
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American model is 120VAC at 60Hz (for the
European model, 230VAC at 50Hz). This receptacle
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Line Input: The line audio input for each zone is a
accepts a 3-prong IEC 320 type connector. A
dedicated sensing input that will activate the zone
detachable 3-terminal power cord is included.
when an audio signal from a source is present.
12VDC Trigger In/Out: The 12V Trigger In is
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Line/Bus Switch: Sets the zone input to the Line
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used to activate the zone. The Trigger Out provides
audio input or the Bus input.
100mA 12V max. This can be used to drive other
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Speaker Outputs: The A and B speaker outputs
12V triggered devices. The delay and audio sensing
are bypassed when the 12V trigger input is used.
are in parallel to the amplifier output. The minimum
speaker impedance for stereo mode operation is 4 Delay Time: Muting delay can be adjusted from
ohms for one pair and 8 ohms for two pairs of
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about 0.5 minute to 4.5 minutes. When an audio
speakers. The minimum impedance for bridged
signal is not present, the amplifier will automatically
mode operation is 8 ohms for Speaker B only.
go into standby mode after the preset period of
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Gain Controls: Left and Right gain controls inde-
time. When set to maximum, the amplifier will stay
active and not go into standby.
pendently adjust the sound level for each channel.
When used in the bridged mode only the Left con-
Stereo/Bridge Mono Switch: Sets each zone
trol is used.
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amplifier for stereo or bridged mono operation.
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Power Switch: Turns the amplifier on/off. This
switch does not disconnect the main power feed
from the amplifier; this requires that the power cord
be unplugged from the outlet.