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3 Mode Indicators
Three LEDs give visual confirmation of the operational mode the
Nº380 is in at any moment. When the
balance control of the
Nº380 is “off-center,” the
balance LED remains lit as a reminder,
in addition to other mode indicators that might be on to indi-
cate either
monitor or record select.
4 Mode Button
Cycles among the three primary operational modes of the Nº380:
monitor (the source being listened to); record select (the source
being provided to the Record Outputs); and
balance (the relative
volumes of the Left and Right channels). Confirmation of these
operating modes is given by the
mode indicators below the al-
phanumeric display
. (See 3, above.)
5 Inverted Polarity Indicator
The polarity (sometimes inaccurately called “absolute phase”) of
the output of the Nº380 may be inverted via the Nº380 remote
control, in which case this LED will light as confirmation. A sec-
ond press of the polarity button on the remote control will re-
store the polarity of the output to its original, non-inverted state.
6 Volume Knob
This control is normally used to adjust the listening volume, and
does not effect the level of the signal being sent to the Record Out-
puts. When in balance mode, this knob is used to vary the rela-
tive output of the Left and Right channels. It is also used during
setup for various adjustments; see “Setup and Installation.”
7 Mono Button
This button toggles between stereo and mono operation. When
in mono, it activates circuitry which combines left and right input
signals, and sends the resulting monophonic signal to both left and
right outputs. This circuit is particularly useful when listening to
older, monophonic source material, since significant noise reduc-
tion is often realized by listening to mono recordings in mono.
8 Source Selector Buttons
Inputs 1–6 are selected by pressing their respective buttons. When
in the monitor mode, pressing one of these buttons will select the
source to be heard (i.e., sent to the main outputs); when in record
select mode, pressing one of these buttons will select the source to
be recorded (i.e., sent to the record outputs).
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