Madrigal Imaging N380 manual Mode Indicators

3MODE 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 or record select.

4MODE 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.)

5INVERTED 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.

6VOLUME 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.”

7MONO 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.

8SOURCE 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).

9MUTE 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.

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