AUDAC EPA252 Manuale utente

EPA152/252/502

User Manual

www.audac.eu

ADDITIONAL INFORMATION

This manual is put together with much care, and is as complete as could be on the

publication date. However, updates on the specifications, functionality or software may

have occurred since publication. To obtain the latest version of both manual and software,

please visit the Audac website @ www.audac.eu.

Index

Introduction 5

Precautions 6

Safety requirements 6

Caution servicing 6

EC Declaration of Conformity 6

Waste of Electrical and Electronic Equipment (WEEE) 7

Caution 7

Chapter 1: Pin connections and connectors 9

Connection standards 9

Chapter 2: Front & rear panel 10

Front panel overview 10

Front panel description 10

Rear panel overview 11

Rear panel description 11

Chapter 3: Connecting the amplifier 12

Input connections 12

Output connections 12

Connection modes 13

Chapter 4: Additional information 14

Technical specifications 14

Notes 16

Introduction

Dual channel Class-D amplifiers

The EPA series are energy efficient Class-D power amplifiers designed for a wide variation of

applications, ranging from standard stereo configurations to multi-zone distributed speaker

systems. They come available in various models with different output configuration and

power ratings.

An outstanding sound quality is combined with other known advantages of Class-D amplifiers

such as high energy efficiency. Automatic signal detection switches the amplifier to standby

mode when no input signal is detected. This makes the amplifier comply to international

energy and environmental requirement standards.

The compact size and lightweight design only requires a single 19” rackspace, while making

them suitable for both fixed rack and mobile applications. The convection cooled construction

requires only a minimum maintenance while guaranteeing high reliability.

The dual channel models of the EPA series are containing two individually controllable

channels with the possibility for bridging the outputs, merging their power to a single load.

They are featuring advanced protection circuitry which protects against DC malfunctioning,

short circuit, overheating and overload.

The signal input connections are implemented using balanced XLR connectors with link output

connectors, allowing linkthrough to other amplifiers. Loudspeaker outputs are connected

using both Speakon compatible and terminal block output connectors.

Precautions

READ FOLLOWING INSTRUCTIONS FOR YOUR OWN SAFETY

ALWAYS KEEP THESE INSTRUCTIONS. NEVER THROW THEM AWAY

ALWAYS HANDLE THIS UNIT WITH CARE

HEED ALL WARNINGS

FOLLOW ALL INSTRUCTIONS

NEVER EXPOSE THIS EQUIPMENT TO RAIN, MOISTURE, ANY DRIPPING OR SPLASHING

LIQUID. AND NEVER PLACE AN OBJECT FILLED WITH LIQUID ON TOP OF THIS DEVICE.

DO NOT PLACE THIS UNIT IN AN ENCLOSED ENVIRONMENT SUCH AS A BOOKSHELF

OR CLOSET. ENSURE THERE IS ADEQUATE VENTILATION TO COOL THE UNIT. DO NOT

BLOCK THE VENTILATION OPENINGS.

DO NOT STICK ANY OBJECTS THROUGH THE VENTILATION OPENINGS.

DO NOT INSTALL THIS UNIT NEAR ANY HEAT SOURCES SUCH AS RADIATORS OR

OTHER APPARATUS THAT PRODUCE HEAT

DO NOT PLACE THIS UNIT IN ENVIRONMENTS WHICH CONTAIN HIGH LEVELS OF DUST,

HEAT, MOISTURE OR VIBRATION

THIS UNIT IS DEVELOPED FOR INDOOR USE ONLY. DO NOT USE IT OUTDOORS

PLACE THE UNIT ON A STABLE BASE OR MOUNT IT IN A STABLE RACK

ONLY USE ATTACHMENTS & ACCESSORIES SPECIFIED BY THE MANUFACTURER

UNPLUG THIS APPARATUS DURING LIGHTNING STORMS OR WHEN UNUSED FOR LONG

PERIODS OF TIME

ONLY CONNECT THIS UNIT TO A MAINS SOCKET OUTLET WITH PROTECTIVE

EARTHING CONNECTION

THE MAINS PLUG OR APPLIANCE COUPLER IS USED AS THE DISCONNECT DEVICE, SO

THE DISCONNECT DEVICE SHALL BE READILY OPERABLE

EC DECLARATION OF CONFORMITY

This product conforms to all the essential requirements and further

relevant specifications described in following directives: 2014/30/EU

(EMC) and 2014/35/EU (LVD)

CAUTION - SERVICING

This product contains no user serviceable parts. Refer all servicing to

qualified service personnel. Do not perform any servicing (unless you

are qualified to)

CAUTION

The symbols shown are internationally recognized symbols that warn about potentional

hazards of electrical products. The lightning flash with arrowpoint in an equilateral triangle

means that the unit contains dangerous voltages. The exclamation point in an equilateral

triangle indicates that it is necessary for the user to refer to the users manual.

These symbols warn that there are no user serviceable parts inside the unit. Do not open the

unit. Do not attempt to service the unit yourself. Refer all servicing to qualified personnel.

Opening the chassis for any reason will void the manufacturer’s warranty. Do not get the

unit wet. If liquid is spilled on the unit, shut it off immediately and take it to a dealer for

service. Disconnect the unit during storms to prevent damage.

WASTE ELECTRICAL AND ELECTRONIC EQUIPMENT (WEEE)

The WEEE marking indicates that this product should not be disposed

with regular houshold waste at the end of its life cycle. This regulation

is created to prevent any possible harm to the environment or human

health.

This product is developed and manufactured with high quality materials

and components which can be recycled and/or reused. Please

dispose this product at your local collection point or recycling centre

for electrical and electronic waste. This will make sure that it will be

recycled on an environmentally friendly manner, and will help to protect

the environment in which we all live.

Chapter 1

Pin connections and connectors

CONNECTION STANDARDS

The in- and output connections for AUDAC audio equipment are performed corresponding

to international wiring standards for professional audio equipment.

Cinch (RCA):

For unbalanced line input connections

Tip: Signal Sleeve: Ground

White: Left Red: Right

XLR:

For balanced signal input connections

Pin 1: Ground

Pin 2: Signal +

Pin 3: Signal -

For balanced signal link-through connections

Pin 1: Ground

Pin 2: Signal +

Pin 3: Signal -

Wire up the system

The wiring of the system must be done according to the following rules, to guarantee a

proper functioning of the system in all circumstances.

1. Speaker cable for amplified outputs:

Minimum 2 x 1.5 mm²

If distance > 15m: 2 x 2.5 mm²)

2. Audio signal inputs (inputs & signal linkthrough outputs)

Must be connected with high-quality audio cable and high-quality

connectors

Chapter 2

Front & rear panel

Front panel overview

100

PROTECT

CLIP

SIGNAL

100

PROTECT

CLIP

SIGNAL EPA502

Front panel description

Volume control knobs:

These volume control knobs allow level adjustment for each individual channel.

Indicator LED’s:

These LED’s indicate the operation of the corresponding amplifier channel. A signal indicator,

clip indicator and protect indicator are available for each channel.

The signal indicator illuminates in green colour when the signal level exceeds the -20 dB level.

The clip indicator illuminates in yellow colour when the channel is working at maximum level.

To ensure the best signal-to-noise ratio, illumination of this indicator should only occur

at peak levels. When it illuminates frequently, the channel output will be overdriven and a

distorted ‘clipping’ sound occurs on the output.

The protect indicator illuminates in red colour when any overload, thermal overheating or

other fault is detected. It also illuminates for several seconds when powering on the amplifier

and slowly fades out when switching off the amplifier. When the protect LED is illuminated,

no signal will be available on the output.

Power switch with LED:

A power switch allows to turn the amplifier on and off. The indicator LED next to the power

switch indicates the current status of the amplifier. When operational, it illuminates in blue

colour. When switched to standby (energy-saving) mode, the power LED will illuminate in

orange colour. The amplifier switches automatically to standby mode when no input signal

is available for about 30 seconds and instantly switches back to operation when any signal

is detected.

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