Aurora Multimedia AS-AMP1 Manuale utente

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AS-AMP1™

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40 Watt Digital Amplifier

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User Manual

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Manual Number: 100818

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Safety and Notice

The AS-AMP1™has been tested for conformance to safety regulations and requirements,

and has been certified for international use. However, like all electronic equipments, the

AS-AMP1 should be used with care. Please read and follow the safety instructions to protect

yourself from possible injury and to minimize the risk of damage to the unit.

zFollow all instructions and warnings marked on this unit.

zDo not attempt to service this unit yourself, except where explained in this manual.

zProvide proper ventilation and air circulation and do not use near water.

zKeep objects that might damage the device and assure that the placement of this unit is on

a stable surface.

zUse only the power adapter and power cords and connection cables designed for this unit.

zDo not use liquid or aerosol cleaners to clean this unit. Always unplug the power to the

device before cleaning.

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The AS-AMP1™is a small digital amplifier (Class D), with EQ control and MIC mixer function. It is in

small enclosure but with powerful functions, including bridge connection, dual-mono, EQ control, microphone

mixer, etc.

Applications include classrooms, small meeting rooms, lecture halls, bars, etc.

Introduction

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Features

•2x20 watt @ 4Ohm as the default amplifier output.

•Bridge connection function. The user can switch the AS-AMP1 to be 1x40Watt@8Ohm by bridge

connection.

•Dual-mono function. The user can sum up the stereo audio to two times mono audio.

•Microphone mixer function. The microphone will be mixed to the line audio output, and separately

controllable.

•Two stereo audio inputs, switchable by button, remote or RS232.

•Volume/Bass/Treble controllable by buttons or RS232.

•Line audio output, with volume controllable.

•Optional control solution, by IR remote or volume panel.

•RS232 control with smart feedback.

•Antistatic case design: providing good protection for long-term and stable performance

•Internal international power supply (100Volt~240Volt AC, 50/60Hz) For worldwide compatibility.

•Fast switching speed.

•LED indicator, for power and working status.

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Specifications & Package Contents

Model Name AS-AMP1™

Audio Input

Input 2 Stereo audio, 1 MIC

Input Connector 2 RCA, 1 3.5mm jack, 1 6.5mm jack

Input Impedance >10KΩ

Frequency 20Hz ~ 20KHz

SNR 80dB at maximum output

Stereo Channel

Separation >75dB@20Hz ~ 20KHz

Voltage Gain 32dB

Audio Output

Output 1 Amplifier, 1 Stereo audio

Output Connector 1 Captive screw connector(4 pole), 1 3.5mm jack

Output Impedance 50Ω/Stereo, 4~8Ω/Amplifier

CMRR >70dB@20Hz ~ 20KHz

Bandwidth 20Hz ~ 25KHz

THD + Noise 1%@1KHz, 0.3%@20KHz at nominal level

Power Output 2x20Watt (4Ohm)

Control Port DE-9 [9-pin D-sub female] 2= TX, 3=RX, 5=GND

IR Remote Optional

Mechanical

Housing Metal enclosure

Dimensions

[L x W x H]

Model 123 x 87 x 38mm [4.84” x 3.43” x 1.5”]

Packag

Weight

Model .5Kg [1.10 lbs]

Packag

Fixedness Wall Mount Key holes

Power supply 24V 3A DC

Power consumption

Operation temperature 0~40°C [32~104°F]

Storage temperature -20~70°C [-4~140°F]

Relative humidity 10~90% RH [no condensation]

Package

Contents 1x AS-AMP1 1x 24V 3A PSU 1x User Manual

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Top Panel

Front Panel

Rear Panel

Panel Descriptions

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Default output: 2x20Watt@4Ohm

The default output of the amplifier is 2x20Watt@4Ohm.

Bridge connection: 1x40Watt@8Ohm

The AS-AMP1 has the bridge connection, to double the output power at 1x40Watt@8Ohm. It will sum up the

input left channel and input right channel to be mono output, and the power is up to 40Watt.

The bridge connection is:

Dual-mono output:

The AS-AMP1 also has the function of double-mono output. It can sum up the left and right channel, to be the

mono audio output. In this way, the both of the outputs are showing the same mono audio.

The connection is:

Audio Connections

1x40Watt@8Ohm

2x20Watt@4Oh

Switching to the

“STEREO”

Switching to the

“BRIDGE” Connecting the two pins, like this

Connecting the four pins, like this

Switching to

the “MONO” Connecting the four pins, like this

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The buttons provide the control of volume/EQ and switching.

Audio switching:

There are two switchable stereo audio inputs, one 2xRCA input, and one 3.5mm jack input. It can be switched

through the buttons as below:

Volume/EQ controlling:

The line volume and Microphone volume can be controlled by the buttons.

The Mic Volume, Line volume, Line bass, and Line treble can be selected by the buttons, and controlled

up/down/mute by the function buttons.

For example, to turn up the line volume, you should select the “LINE” first, and then press the button “ ”.

Front Panel Control

Source

Selection

Select the function from

this menu in advance

Turn up/down the level.

Or mute the line volume

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Baud rate: 9600 Data bit: 8 Stop bit: 1 Parity bit: none

DE-9 [9-pin D-sub female] 2= TX, 3=RX, 5=GND

Command Function Desctription Feedback Code

1A1. Switching the audio to input 1 A: 1 -> 1

2A1. Switching the audio to input 2 A: 2 -> 1

0A0. Mute Audio Mute Audio

0A1. UnMute Audio UnMute Audio

600% Checking the working status

A: 1 -> 1

Volume :30

Bass 00

Treble 00

601% MIC volume up Volume of MIC : 51

602% MIC volume down Volume of MIC : 51

603% Line volume up Volume of LINE : 51

604% Line volume down Volume of LINE : 51

605% Bass level up Bass of LINE ：04

606% Bass level down Bass of LINE ：04

607% Treble level up Treble of LINE : 04

608% Treble level down Treble of LINE : 04

609% Initialization, back to the default setting

A: 1 -> 1

Volume :50

Bass 07

Treble 07

Communciation Protocol

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Command Function Description Feedback Code

5[x][x]% Preset MIC volume, [xx] is ranging from [00] to

[60].

61 degrees in total.

Volume of MIC :50

7[x][x]% Preset line volume, [xx] is ranging from [00] to [60].

61 degrees in total.

Volume of LINE :50

8[x][x]% Preset the bass level, [xx] is ranging from [00] to

[08].

9 degrees in total.

Bass of LINE : 04

9[x][x]% Preset the treble level, [xx] is ranging from [00] to

[08].

9 degrees in total.

Treble of LINE : 04

Notice:

1: The letter inside bracket [ ] is the variable code, which is the changeable.

2: The bracket [ ] is not included to the RS232 commands.

Example 1

Switching the input 2 to the line out. Send the RS232 command: [2A1.]

Example 2

Turning up the volume of line audio. Send the RS232 command: [603%]

Example 3

Preset the MIC volume to be “21” degree. Send the RS232 command: [521%]

Example 4

Checking the working status of AS-AMP1. Send the RS232 command: [600%]

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