Madrigal Imaging N380 User Manual

Page 10

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 indi-

cators

that might be on to indicate either

monitor

record select

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

alphanumeric display

. (See 3, above.)

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 second press of the

polarity

button on

the remote control will restore the polarity of the output to its original,
non-inverted state.

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 Outputs. When in

balance

mode, this knob is used to vary the relative output of the Left and

Right channels. It is also used during setup for various adjustments; see
“Setup and Installation.”

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 reduction is often realized by listening to mono re-
cordings in mono.

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).

MUTE BUTTON
Pressing the

mute

button will reduce the main output level of the preampli-

fier by a user-modifiable amount, ranging from 1 to 60 decibels. Pressing
the Mute button a second time without adjusting the volume will return it
to its previous setting.