ADS 5240 Operation Manual

Installation &

Operation Guide

ADS 5240

240W ac/dc

Mixer Amplifier

PLEASE NOTE: THIS MANUAL AND THE NOTES CONTAINED HEREIN ARE

COPYRIGHT AND MAY NOT BE REPRODUCED EITHER WHOLLY OR IN PART, IN

ANY WAY WHATSOEVER, WITHOUT WRITTEN CONSENT OF ADSworldwide.

Audio Design Services Ltd, St David’s House, Adcroft St, Higher Hillgate, Stockport, Cheshire SK1 3HW, UK.

TEL: [phone] FAX: [phone]. WEB: www.ads-worldwide.net

© 2009

Product Compliance to EC directives for Standard Products

All standard products conform to the relevant directives, regulations and standards
for electronic and associated apparatus. The equipment is CE marked both on the
apparatus and the packaging.

Our products meet the appropriate British and International standards. A product
‘Declaration of Conformity’ Statement is available for each of the product ranges
(available on request). This covers both the EMC and Low Voltage Directives.

While all ADSworldwide equipment is carefully packed to prevent damage in
transit, we recommend that the equipment is unpacked and inspected immediately
on receipt. If damage has occurred please advise your carrier and your supplier
who will arrange appropriate action.

If it is necessary to re-pack the equipment for onward shipping or returning to

ADSworldwide for service PLEASE ENSURE THAT THE ORIGINAL PACKING
OR EQUIVALENT IS USED.

UNPACKING

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IMPORTANT

The lightning flash with arrowhead symbol, within an equilateral triangle, is
intended to alert the user to the presence of un-insulated dangerous voltage within
the product's enclosure that may be of sufficient magnitude to constitute a risk of
electric shock to persons.

The exclamation mark within an equilateral triangle is intended to alert the user to
the presence of important operating and maintenance instructions in the literature
accompanying the appliance.

TO PREVENT THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER
(OR BACK). NO USER SERVICABLE PARTS INSIDE. REFER SERVICING TO
QUALIFIED PERSONNEL.

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TABLE OF CONTENTS

INTRODUCTION .................................................................................................... 5

Features............................................................................................................................ 5

Safety Information.............................................................................................................6

OPERATION........................................................................................................... 7

General Installation........................................................................................................... 7

Front Panel ....................................................................................................................... 7

Rear Panel........................................................................................................................ 8

Priority Connections..........................................................................................................9

Input 1............................................................................................................................9

Inputs 2–5......................................................................................................................9

Input Connections............................................................................................................. 9

Inputs 1–5......................................................................................................................9

Input 6............................................................................................................................9

Input Options...................................................................................................................10

Input 1..........................................................................................................................10

Inputs 2–5....................................................................................................................10

Trim Control ....................................................................................................................10

Output Connections ........................................................................................................ 10

Line Out .......................................................................................................................10

Tape Out...................................................................................................................... 11

Loudspeaker Out .........................................................................................................11

Loudspeaker Loading .................................................................................................. 11

dc Power......................................................................................................................... 11

Facility Terminals............................................................................................................ 12

dc Output .....................................................................................................................12

Restoration .................................................................................................................. 12

Accessories.....................................................................................................................12

TROUBLESHOOTING.......................................................................................... 13

SPECIFICATIONS ................................................................................................ 14

NOTES ................................................................................................................. 15

WARRANTY CONDITIONS.................................................................................. 16

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Audio Design Services Ltd., St David’s House, Adcroft Street, Higher Hillgate, STOCKPORT SK1 3HW.

INTRODUCTION

Features

The ADS 5240 is a 240 watt rms, 2-zone, mixer amplifier, ideally suitable for powering
medium and large sound systems. The technically sophisticated, built-in features, allow a
wide range of applications at a competitive price. Further, the design features make the
amplifier one of the simplest to configure and install with no internal adjustments or retrofit
options required.

• 220-240Vac (at 50Hz) or 24Vdc power operation

• 24Vdc phantom power, providing a means of distributing current through

audio cables to power microphones and other equipment

• volume restoration, restoring volume levels to pre-defined factory or user­defined settings when initiating communications in areas such as paging,
public address, two-way radio, intercoms and music distribution systems

• volume sensitivity and trim controls for all inputs, allowing adjustment to the
level of the incoming microphone or line-level signals to match the internal
operating levels of the mixer unit

• six inputs, the first five of which are balanced and feature

o a ‘universal’ input allowing simple configuration via a slide switch
o a switch-selectable, 18Vdc phantom power supply
o a switch-selectable, two-note chime, activated when the input priority

o a remote volume restoration relay able to be operated when the input

• a priority ladder for the first five balanced inputs, where

o input 1 mutes all other inputs
o inputs 2 to 5 operate on a ‘first-come-first-served’ basis
o input 6 has no priority

(when ‘no priority’ terminal is closed, all inputs act as mixing inputs)

• a switchable VOX and Siren facility on input 1; the tone is generated on
closure of the priority input

• two 100V line outputs – ‘Music & Speech’ and ‘Speech Only’ (the ‘Music &
Speech’ output is permanently connected, providing output of all amplifier
traffic; the ‘Speech Only’ output is only connected when a priority is closed;
this can provide paging only, to areas where music is not desired)

• separate bass (±8dB at 100Hz), treble (±8dB at 10kHz) and master volume
controls, located on the front panel

• compact size, taking up only 2U of rack space (the amplifier is supplied with
19-inch rack mount ears).

Features include

terminal is closed

priority terminal is closed

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