Dynacord S 900 Manual del usuario - Página 6
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Power Amplifier Outputs
The power amplifier's channel A (left) and channel
B (right) outputs are carried out as SPEAKON
output connectors.
The bridged-out connector conducting the output
signal in bridged mode operation is protected by a
plastic cover to avoid inadvertently plugging a
speaker cable into the wrong connector.
BRIDGED MODE
When the bridged mode switch is engaged you will
have to use the channel A input. The channel B
input is out of function. The signal gets internally
inverted and fed to the channel B power amp. The
two amplifiers A+B are now used in push-pull
operation providing the double output voltage at
the BRIDGED-OUT connector.
The regular output voltages of the power amplifiers
A and B are still present at the individual output
connectors CHANNEL A and CHANNEL B but in
respect to the inverted phase, using these signals
is not recommendable.
Bridged mode operation on loads of 2 ohms is
not admissible.
GROUND-LIFT SWITCH
The ground-lift switch is meant to help you in
avoiding ground noise loops. Whenever the power
amplifier is installed in a 19" rack system being
operated together with other equipment, the re-
commended setting of the switch is the GROUN-
DED position. In case the power amplifier is used
together with appliances that are connected to
different ground potentials, the recommended set-
ting is UNGROUNDED.
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