Aurora Multimedia AS-AMP1 User manual

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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
e
Weight
Model .5Kg [1.10 lbs]
Packag
e
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
m
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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Aurora Multimedia Corp. (“Manufacturer”) warrants that this product is free of defects in both
materials and workmanship for a period of 3 years as defined herein for parts and labor from
date of purchase. Motorized mechanical parts (Hard Drives, DVD, etc), mechanical parts
(buttons, doors, etc), remotes and cables are covered for a period of 1 year. Batteries are not
covered by this warranty. During the warranty period, and upon proof of purchase, the product
will be repaired or replaced (with same or similar model) at our option without charge for parts
or labor for the specified product warranty period.
This warranty shall not apply if any of the following:
A) The product has been damaged by negligence, accident, lightning, water, act-of-God or
mishandling; or,
B) The product has not been operated in accordance with procedures specified in operating
instructions: or,
C) The product has been repaired and or altered by other than manufacturer or authorized
service center; or,
D) The product's original serial number has been modified or removed: or,
E) External equipment other than supplied by manufacturer, in determination of manufacturer,
shall have affected the performance, safety or reliability of the product.
F) Part(s) are no longer available for product.
In the event that the product needs repair or replacement during the specified warranty period,
product should be shipped back to Manufacturer at Purchaser's expense. Repaired or replaced
product shall be returned to Purchaser by standard shipping methods at Manufacturer's
discretion. Express shipping will be at the expense of the Purchaser. If Purchaser resides
outside the contiguous US, return shipping shall be at Purchaser's expense.
No other warranty, express or implied other than Manufacturer's shall apply.
Manufacturer does not assume any responsibility for consequential damages, expenses or loss of
revenue or property, inconvenience or interruption in operation experienced by the customer
due to a malfunction of the purchased equipment. No warranty service performed on any
product shall extend the applicable warranty period.
This warranty does not cover damage to the equipment during shipping and Manufacturer
assumes no responsibility for such damage.
This product warranty extends to the original purchaser only and will be null and void upon any
assignment or transfer.
Aurora Multimedia Corp.
205 Commercial Court, Morganville, NJ 07751
Phone: [phone] Fax: [phone]
www.auroramultimedia.com
Limited 3 Year Warranty