Nuvo NV-P2100 Audio Sensitivity Control, Power Mode, Left and Right Sensitivity Trims, B

Audio Sensitivity Control

The P2100 allows the flexibility of controlling the left and right channel gain 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. 2.

Fig. 2

AUDIO

L	SENSITIVITY
	OdBV = 1.0RMS
INPUT	LEFT	RIGHT
2	0	0
R
+6	-12 +6	-12

INPUT OUTPUT

Left and Right

Sensitivity Trims

To best utilize this feature, set the volume for the source at its fullest output level. Then adjust the left and right sensi- tivity trims on the amplifier to allow the fullest possible out- put 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 outs, such as the NuVo Essentia system. 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 pre- ferred setting for an audio signal from a preamp, such as a distributed audio system with a fixed lineout, or the audio output of a music server or CD player.

-12is a high gain position. This is typically used when the incoming audio signal is weak, such as a portable CD player.

Power Mode

The P2100 provides three basic methods for supplying power to the amplifier. This can be accomplished by simply push- ing 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 sets the amplifier to respond to any of the three options. Fig. 3A, 3B, and 3C.

Fig. 3A

CONTROL

POWER	VOLTAGE	UNIT
MODE	TRIGGER	ON
ON/OFF SWITCH	3-30 VOLTS	+12VDC
AUDIO AC/DC	AC OR DC	100mA

Setting the power mode switch in the left in the AUDIO MODE sets the amplifier to respond to the presence of an audio signal. If you are triggering the amplifier in this way, you should expect a slight delay before it turns on. It will then remain on for approximately three minutes after the incoming audio signal has ended before the unit turns off. This will prevent the unit from inadvertently turning off when the audio signal is very low or stops temporarily.

Fig. 3B

CONTROL

POWER	VOLTAGE	UNIT
MODE	TRIGGER	ON
ON/OFF SWITCH	3-30 VOLTS	+12VDC
AUDIO AC/DC	AC OR DC	100mA

In the center, ON/OFF SWITCH position, the amplifier will turn on or off only when the POWER buttonon the front of the unit is pushed.

Fig. 3C

CONTROL

POWER	VOLTAGE	UNIT
MODE	TRIGGER	ON
ON/OFF SWITCH	3-30 VOLTS	+12VDC
AUDIO AC/DC	AC OR DC	100mA

The right, AC/DC position, sets the amplifier to respond to an incoming voltage. This voltage can be AC or DC and anything from 3-30 volts. This is very useful in conjunction with a multi zone system or preamp that has voltage trigger out- puts. In this mode the P2100 will turn on or off with the source equipment.

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