Bridged Mono Operation - Rotel RB-976 Manual De Instrucciones

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If you are using terminal lugs, connect them to the wires. If you
are attaching bare wires directly to the binding posts, separate
the wire conductors and strip back the insulation from the end of
each conductor. Be careful not to cut into the wire strands. Un-
screw (turn counterclockwise) the binding post hexagonal thumb-
screws. Place the connector lug or wire around the binding post
shaft. Turn the hexagonal thumbscrews clockwise to clamp the
connector lug or wire firmly in place.
Note: Be sure there are no loose wire strands that could touch
adjacent wires or connectors.
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Bridged Mono Operation

[See Figure 3 for bridged operation connection illustration.]
The channel pairs of the RB-976 can be "bridged". In this configu-
ration the single channel produces a massive 150 watts! This fea-
ture allows you to increase the overall power output of your
system by bridging the channel pairs of the RB-976 and adding a
second RB-976 that also has bridged channel pairs. Or one of the
RB-976 channel pairs may be bridged to drive a monophonic sub-
woofer. Note however that when one of the RB-976 channel pairs
is bridged the speaker connected to it must have an impedance of
8 ohms or more.
Note: Turn off all the system components before you change any
signal connections or the setting of the Input Selector Switches.
To bridge one of the RB-976 channel pairs move the Input Selector
Switch for that channel to the "Bridged" position.
Input Connection
When using one of the RB-976 channel pairs in bridged mono
mode, connect the cable from the preamplifier or signal processor
output to the left input of the channel pair. No connection is made
to the right input.
Note: It is possible to link inputs B and/or C while A is in the
Bridged Mode. Both left and right inputs are used for A.
Bridged Speaker Connection
When using one of the RB-976 channel pairs in bridged mono
mode, the wire to the speakers is connected to the positve termi-
nals of the left and right channels. Connect the wire that goes to
the postive terminal of the speaker to the positve terminal of the
left channel of the channel pair. Connect the wire that goes to the
negative terminal of the speaker to the positve terminal of the
right channel of the channel pair. No connections are made to the
negative terminals.
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SIX CHANNEL POWER AMPLIFIER RB-976
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Troubleshooting
Most difficulties in audio systems are the result of incorrect con-
nections, or improper control settings. If you encounter problems,
isolate the area of the difficulty, check the control settings, deter-
mine the cause of the fault and make the necessary changes. If
you are unable to get sound from the RB-976, refer to the sugges-
tions for the following conditions:
Front Panel Power Indicator Is Not Lit
No main power to the RB-976. Check the front panel power
switch. Make sure that it is set to the on position. Check AC power
connections at the amplifier and the AC outlet.
Fuse Replacement
If everything checks out correctly and you still cannot get the am-
plifier to turn on, the internal power fuse may have blown. If you
believe this has happened, contact your authorized Rotel dealer
to get the fuse replaced.
No Sound
If the amp is getting AC power, but is producing no sound, check
the Channel and Bridged Mono indicator lights on the front panel.
Then check all input and output connections to be sure they are
correct. Finally check the connections to, and the control settings
of, the associated components.

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