Woxcon PA2B Bedienungsanleitung

PA2B

Mini Digital Amplifier

Version: PA2B_2018V1.2

User Manual

Mini Digital Amplifier

Preface

Read this user manual carefully before using this product. Pictures shown in this

manual is for reference only, different model and specifications are subject to real

product.

This manual is only for operation instruction only, not for any maintenance usage. Any

changes of functions and parameters since then will be informed separately. Please

refer to the dealers for the latest details.

Trademarks

Product model and its logo are trademarks. Any other trademarks mentioned in this

manual are acknowledged as the properties of the trademark owner. No part of this

publication may be copied or reproduced without our prior written consent.

FCC Statement

This equipment generates, uses and can radiate radio frequency energy and, if not

installed and used in accordance with the instructions, may cause harmful interference

to radio communications. It has been tested and found to comply with the limits for a

Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed

to provide reasonable protection against harmful interference in a commercial

installation.

Operation of this equipment in a residential area is likely to cause interference, in which

case the user at their own expense will be required to take whatever measures may be

necessary to correct the interference

Any changes or modifications not expressly approved by the manufacture would void

the user’s authority to operate the equipment.

Mini Digital Amplifier

SAFETY PRECAUTIONS

To insure the best from t he product, pl ease read all instruct ions careful ly before using

the device. Save this manual for further reference.

l Unpack the equipment carefully and save the original box and packing material for

possible future shipment

l Follow basic safety precautions to reduce the risk of fire, electrical shock and injury

to persons.

l Do not dismantle the housing or modify the module. It may result in electrical shock

or burn.

l Using supplies or parts not meeting the products’ specifications may cause

damage, deterioration or malfunction.

l Refer all servicing to qualified service personnel.

l To pr event fire or shock hazard, do not expose the unit to rain, moisture or install

this product near water.

l Do not put any heavy items on the extension cable in case of extrusion.

l Do not remove the housing of the device as opening or removing housing may

expose you to dangerous voltage or other hazards.

l Install the device in a place with fine ventilation to avoid damage caused by

overheat.

l Keep the module away from liquids.

l Spillage into the housing may result in fire, electrical shock, or equipment damage.

If an object or liquid falls or spills on to the housing, unplug the module immediately.

l Do not twist or pull by force ends of the optical cable. It can cause malfunction.

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

the device before cleaning.

l Unplug the power cord when left unused for a long period of time.

l Information on disposal for scrapped devices: do not burn or mix with general

household waste, please treat them as normal electrical wastes.

Mini Digital Amplifier

Table of Contents

Introduction ............................................................................................. 1

1.1. Introduction to Mini Digital Amplifier ............................................... 1

1.2. Features ......................................................................................... 1

1.3. Package List ................................................................................... 1

System Connection Introduction ............................................................. 2

2.1. Audio Output .................................................................................. 2

2.1.1. Default output: 2x20Watt@4Ohm ....................................... 2

2.1.2. Bridge connection: 1x40Watt@8Ohm ................................. 2

2.1.3. Dual-mono Output ............................................................... 3

2.2. Microphone input ............................................................................ 3

2.2.1. 48V phantom power input ................................................... 3

2.2.2. MIC input ............................................................................. 4

2.2.3. LINE input ........................................................................... 4

Operation of the Control Panel and the IR Remote ................................ 4

3.1. Operation of the Control Panel ....................................................... 4

3.1.1. Audio switching ................................................................... 4

3.1.2. Volume/EQ controlling ......................................................... 5

3.2. Usage of the IR Remote ................................................................. 5

System Diagram ..................................................................................... 6

Communication Protocol and Command Codes ..................................... 7

Specification ............................................................................................ 8

Panel Drawing ......................................................................................... 9

Troubleshooting & Maintenance ........................................................... 10

After-sales Service ................................................................................ 11

Mini Digital Amplifier

Introduction

1.1. Introduction to Mini Digital Amplifier

The Mini Digital Amplifier is a compact-size digital amplifier (Class-D) with 3 inputs (2

line in and 1 balanced MIC). It is integrated with powerful functions, including bridge

connection, dual-mono, EQ control, microphone mixer etc.

It has a good application in different places, including classroom, small meeting room,

lecture hall, bar, pub etc.

1.2. Features

l 2x20Watt@4Ohm as the default amplifier output.

l Bridge connection function. User can switch the Mini Digital Amplifier to be

1x40Watt@8Ohm by bridge connection.

l Two stereo audio inputs, switchable by button, IR remote & RS232.

l Volume/Bass/Treble controllable by buttons IR remote & RS232.

l MIC port can support balance/unbalance signal, suppress the external noise

effectively.

l Line audio output at 3.5mm jack, with volume controllable.

l Dual-mono function. User can sum up the stereo audio to two times mono audio.

l MIC mixer function. The microphone will be mixed to the line audio output, and be

controlled separately.

l MIC input supports 48V phantom power, dynamic MIC and wireless MIC.

l Auto noise gate. It keeps detecting the audio and MIC input, will mute the output

when there is no input.

l Ultra low inrush current, no need for power sequencing. This allows multiple Mini

Digital Amplifier to be powered on simultaneously without overloading power

circuits.

l Convection cooler, fan is not needed.

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

performance.

1.3. Package List

Ø 1 x Mini Digital Amplifier (The mounting ears and Mini Digital Amplifier are as a

whole.)

Ø 2 x Pluggable Terminal Blocks

Ø 1 x RS232 Cable

Mini Digital Amplifier

Ø 1 x Power Adapter

Ø 1 x Power Cord

Ø 4 x Plastic Cushions

Ø 1 x User Manual

Notes

Ø The IR remote and its battery are offered for charge separately.

Ø The IR receiver is also offered for charge.

Ø Please confirm if the product and the accessories are all included, if not, please

contact with the dealers.

System Connection Introduction

2.1. Audio Output

2.1.1. Default output: 2x20Watt@4Ohm

The default output of amplifier is 2x20Watt@4Ohm, so user can connect the amplifier

output in the regular way. As the picture below:

2.1.2. Bridge connection: 1x40Watt@8Ohm

The Mini Digital Amplifier 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:

Connecting the four pins, like this

Mini Digital Amplifier

2.1.3. Dual-mono Output

The Mini Digital Amplifier 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:

2.2. Microphone input

The microphone input of Mini Digital Amplifier has three modes, and different modes

use different connections, as the picture below:

2.2.1. 48V phantom power input

When the switch turns to “48V”, the MIC input will provide a 48V phantom power. This

is usually used for power supply for condenser microphone, Connection is:

“+” connects to positive, “-” connects to negative and “╧” to ground.

Note: In this mode, only condenser microphone can be connected with.

Connecting the two pins, like this

Connecting the four pins, like this

Mini Digital Amplifier

2.2.2. MIC input

When the switch turns to “MIC”, the microphone input is used for connecting with

dynamic microphone. There are two different connections:

1) Unbalanced connection:

“╧” connects to ground, and “-” connects to signal.

“╧” connects to ground, and “+” connects to signal.

2) Balanced connection: “+” connects to positive, “-” connects to negative and “╧”

connects to ground.

2.2.3. LINE input

When the switch turns to “LINE”, the microphone input is used for connecting with

normal audio or wireless microphone output. There are two different connections:

1) Unbalanced connection:

“╧” connects to ground, and “-” connects to signal.

“╧” connects to ground, and “+” connects to signal.

2) Balanced connection: “+” connects to positive, “-” connects to negative and “╧”

connects to ground.

Operation of the Control Panel and the IR Remote

3.1. Operation of the Control Panel

The buttons provides the control of volume/EQ control and switching. The following

content introduces audio switching and EQ control in detail.

3.1.1. Audio switching

There are two switchable stereo audio inputs, one 2xRCA input, and one 3.5mm jack

input, switchable through the buttons as below:

Source

Selection

Mini Digital Amplifier

3.1.2. Volume/EQ controlling

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

The MIC Volume/LINE volume/LINE bass/LINE treble will be selected by the buttons,

and controlled up/down/mute by the function buttons. Please check the picture below:

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

press the button “ ”.

3.2. Usage of the IR Remote

Mute Mode:

MIC: Mute the

microphone volume.

LINE: Mute the line

volume.

SPEAKER: Unmute

Use to transmit the

infrared signal send by

the IR remote.

Audio Controlling Modes

MIC: turn up/down the

microphone volume.

LINE: turn up/down the line

volume.

BASS: bass tuning

TREBLE: treble of line volume.

Audio Inputs

1: RCA dual-mono audio

inputs

2: 3.5mm jack

Firstly to

select the

function

from this

menu.

Then to turn

down/up the

level, or

mute the

output.

Mini Digital Amplifier

Notice: The IR remote, the IR receiver, and the battery of the IR remote are all offered

for charge.

System Diagram

IR receiver head, works in

conjunction with the IR

remote. Please point the IR

remote at the IR receiver

when use, to avoid getting out

of control as there is no signal

detected.

3.5mm jack, insert

it into the

specialized socket

(3.5mm) to connect

the IR receiver with

the amplifier

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