Legrand NV-D2120 - Manual (Page 11)

II. Audio Sensitivity Control
The D2120 allows the flexibility of controlling the left and right channel gains for the incoming audio signal. The sensitivity allows a control of -12
dB up to +6 dB, and is an excellent tool for maximizing the full output potential of your source equipment (Fig. 3).
Fig. 3
To best utilize this feature, set the volume for the source at its fullest output level. Then adjust the left and right sensitivity trims on the amplifier to
allow the fullest possible output from the speakers without distortion.
+6 or a counter-clockwise turn is used to reduce the gain. This would be the preferred setting for a distributed audio system with variable preamp
line outputs, such as any of the NuVo systems. Reducing the gain can also be useful for limiting the maximum power going to the speakers.
0 or straight vertically is the factory default. This is the preferred setting for an audio signal from a preamp, such as a distributed audio system with
a fixed preamp line output, or the audio output of a music server or CD player.
-12 or a clockwise turn is a high gain position. This is typically used when the incoming audio signal is weak, such as a portable CD player or iPod.
III. Power Mode
The D2120 provides three basic methods for supplying power to the amplifier. This can be accomplished by simply pushing the Power button on the
front of the unit, by sensing an incoming audio signal, or by supplying a 3-30 volt AC or DC current. The Power Mode switch on the back of the
amplifier (Fig. 4) sets the amplifier to respond to any of the three options.
Fig. 4
Left and Right
Sensitivity Trims
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