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Preamplifier for Matrix

ADR25 8 Channel PreAmplifier
8 input channels and eight output channels.
8 signal indicators for input and output....

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Features

8 input channels and eight output channels.

8 signal indicators for input and output.

Independent volume control for eight output channels.

Independent tone control for eight output channels of high and low pitch.

With compulsive insert and Priority function


Description

ADR25 is a pre-amplifier with 8 input channels and eight output channels exclusively used by the digital multiple-access public address system. Independent volume control for 8 output channels. Independent tone control for eight output channels of high and low pitch. Input sensitivity of each line250MV.With compulsive insert and priority function.


Specification

No.

Item

Indicator requirement

Unit

1

Input sensitivity of each line

250

Mv

2

Output level of each line

1000

Mv

3

Noise-signal ratio

>80

dB

4

Frequency response (-3dB)

20-30k

Hz

5

Regulating range of tune in each channel (relative to frequency of 1kHz)

Low pitch (100Hz)

±10

dB

High pitch (10kHz)

±10

dB


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Connection

TIM截图20180425131808.jpg

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