Bosch LA3-VARI-B Bedienungsanleitung

VARI‑directional array

LA3‑VARI‑B, LA3‑VARI‑BH, LA3‑VARI‑E, LA3‑VARI‑CM, LA3‑VARI‑CS

en Installation manual

VARI-directional array Table of contents | en 3

Bosch Security Systems B.V. Installation manual 2018.06 | V1.3 |

Table of contents

1Safety 5

1.1 Reference to EC statement of conformity 5

2Introduction 6

2.1 Users notice and disclaimer 6

2.2 Intended audience 6

3System Overview 7

3.1 What’s in the packaging 10

4Installation 11

4.1 Preparing for installation 11

4.2 Power, Signal and Control cables 12

4.2.1 AC mains supply 13

4.2.2 Audio inputs 13

4.2.3 Backup DC power supply 14

4.2.4 Failure relay 14

4.2.5 Control input 14

4.2.6 RS-485 network 14

4.2.7 CobraNet® input 15

4.2.8 Common analogue grounding issues 15

4.3 Adding VARI-E Extension Units 16

4.3.1 Attachment method 16

4.4 Optional CobraNet® module 19

4.5 Mechanical installation 20

4.5.1 Mounting height 20

4.5.2 Flush mounting 20

4.5.3 Mounting the loudspeaker 20

5Connector and wiring details 23

5.1 AC Mains input (1) 24

5.2 Backup DC power supply input (2) 24

5.3 Line level input 1 (4) and 2 (5) 25

5.4 100 V input 1 (6) and 2 (7) 25

5.5 RS-485 network in (8) and thru (9) 26

5.5.1 Network configuration 26

5.5.2 Cable length 27

5.5.3 Cable termination 27

5.6 External control input (10) 28

5.7 Failure relay (11) 28

6Configuring the VARI 29

6.1 Installation of VARI-control software on a PC 29

6.1.1 Minimum PC requirements 29

6.1.2 Administrator 29

6.1.3 Software installation 30

6.2 Connecting the PC to the VARI 31

6.3 Entering the venue parameters 32

6.4 VARI configuration procedure 33

6.4.1 Control parameters 33

6.4.2 Ranges of adjustment 34

6.4.3 Other VARI parameters 35

6.4.4 Applying and saving the settings 36

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2018.06 | V1.3 | Installation manual Bosch Security Systems B.V.

6.4.5 Loading a previously saved settings file 36

7Technical Data 38

VARI-directional array Safety | en 5

Bosch Security Systems B.V. Installation manual 2018.06 | V1.3 |

1 Safety

Prior to installing or operating this product, always read the Important Safety Instructions

which are available as a separate document (F.01U.120.759) and are packed with all units that

can be connected to the mains. In addition to these Important Safety Instructions, this

Installation Manual contains specific instructions indicated with a Warning sign. Persons can

be (severely) injured or the equipment can be seriously damaged if such an alert is not being

observed.

1.1 Reference to EC statement of conformity

This document confirms that products bearing the CE label meet all the requirements in the

EMC directive 2004/108/EC and LV directive 2006/95/EC laid down by the Member States

Council for adjustment of legal requirements. Furthermore the products comply with the rules

and regulations from 30 August 1995 referring to the electromagnetic compatibility of devices.

Bosch VARI-directional Arrays bearing the CE label comply with the following harmonised or

national standards:

EMC EN 55103-1 :2009

EN 55103-2 :2009

Safety IEC 60065 :2002 + A1 :2006

Mains Harmonics EN 61000-3-2 Class A :2006

Insulation Class 1

Bosch Security Systems B.V., The Netherlands, March 2013.

6en | Introduction VARI-directional array

2018.06 | V1.3 | Installation manual Bosch Security Systems B.V.

2 Introduction

This installation manual describes the recommended installation procedure for the Bosch VARI

range of line arrays. The Bosch VARI is a DSP-based active line array. As well as loudspeaker

drivers, the VARI base units, LA3-VARI-B, LA3-VARI-BH and LA3-VARI-E, contain a

mains‑powered electronics module consisting of a multi‑channel amplifier and a Digital Signal

Processing (DSP) section. The LA3‑VARI-E extension unit contains loudspeaker drivers and a

multi-channel power amplifier powered from the base unit.

This manual describes the following aspects of an installation:

– Necessary cabling

– Connector wiring

– Mechanical installation

– Line array configuration using the VariControl software application

Notice!

The terms “loudspeaker” and “line array” are both used throughout this manual, and may be

considered synonymous.

2.1 Users notice and disclaimer

Although every effort has been made to ensure the information and data contained in these

Installation Manual is correct, no rights can be derived from the contents.

Bosch Security Systems B.V. disclaim all warranties with regard to the information provided in

these instructions. In no event shall Bosch Security Systems B.V. be liable for any special,

indirect or consequential damages whatsoever resulting from loss of use, data or profits,

whether in action of contract, negligence or other tortious action, arising out of or in

connection with the use of the information provided in these Installation and User

Instructions.

No part of this manual including the software described in it may be reproduced, transmitted,

transcribed, stored in a database system or translated without the express written permission

of Bosch Security Systems B.V. Documentation kept by the end user for back-up purposes is

excluded from the above.

All products and corporate names mentioned in this manual may be registered trademarks or

copyrights of their respective companies. They are used here for indicative purposes only.

Specifications and information contained in this manual are subject to change at any time

without notice.

2.2 Intended audience

This manual has been written with installers in mind. Sections in this manual that carry a

Warning sign describe servicing instructions for use by qualified service personnel only. To

reduce the risk of electric shock do not perform any servicing other than that contained in the

operating instructions unless you are qualified to do so.

VARI-directional array System Overview | en 7

Bosch Security Systems B.V. Installation manual 2018.06 | V1.3 |

3 System Overview

The Bosch VARI product range consists of three line array variants, the configuration software

and an optional CobraNet® module:

–LA3-VARI-B : VARI Base unit.

–LA3-VARI-BH : VARI Base unit with extended HF response.

–LA3-VARI-E : VARI Extension unit.

–LA3-VARI-CS : VARI Configuration Set.

–LA3-VARI-CM : Optional CobraNet® module.

VARI-xx line arrays

The three line array units are identical in physical size and appearance. VARI base units may be

installed on their own, or with either one or two VARI extension units mechanically added to

them. Adding VARI extension units will increase the effective coverage area of the line array

and provide a greater SPL (Sound Pressure Level) within the coverage area for the same

electronic configuration.

The table below shows the continuous SPLs (Sound Pressure Levels) achievable on-axis at

various distances from the loudspeaker for each of the three configurations, mounted at 3m

above floor level.

Distance VARI-B VARI-B+E VARI-B+E+E VARI-BH VARI-BH+E VARI-BH+E+E

20 m 90 dBA - - 89 dBA - -

32 m - 90 dBA - - 89 dBA -

50 m - - 88 dBA - - 87 dBA

VARI-BH base units employ co-axial drivers instead of the single-coil drivers fitted to the

VARI‑B. These give the line arrays an extended high-frequency response and this model is

better suited to applications where the audio system is to reproduce music as well as speech.

VARI extension units may be used to extend either VARI‑B or VARI‑BH base units. By adding

one or two extension units to either base unit, a total of six line array configurations can be

constructed. Refer to NoTrans Variables.

For easy identification an abbreviated array name has been defined for each of the possible

array compositions:

Array name Array composition Elements used

VARI-B VARI-BH VARI-E

Vari-array-B1 VARI-B 1 - -

Vari-array-B2 VARI-B+E 1 - 1

Vari-array-B3 VARI-B+E+E 1 - 2

Vari-array-H1 VARI-BH - 1 -

Vari-array-H2 VARI-BH+E - 1 1

Vari-array-H3 VARI-BH+E+E - 1 2

The mechanical mounting and coupling arrangements of the VARI units are designed to give

composite line arrays the smooth, finished appearance of a single unit when extension units

are employed.

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2018.06 | V1.3 | Installation manual Bosch Security Systems B.V.

Figure3.1: VARI overview (grilles removed for identification)

VARI-directional array System Overview | en 9

Bosch Security Systems B.V. Installation manual 2018.06 | V1.3 |

VARI Configuration Set

A VARI‑CS Configuration Set consists of a computer interface and interconnection cables. It

should be ordered separately from the line arrays. A VARI‑CS Configuration Set can be used

repeatedly, on multiple installations. Bosch can accept no responsibility for the correct

functioning of any other type of computer interface; the use of OEM interfaces is not

recommended.

VARI CobraNet® Module

VARI base units may be fitted with an optional CobraNet® input module. CobraNet® is a

proprietary audio network protocol used widely in large infrastructures to carry multiple

channels of digital audio and other control data bi-directionally over Ethernet, using CAT-5

cable. The VARI‑CM module allows VARI line arrays to be directly interfaced to a CobraNet®

network.

Notice!

Note that this manual does NOT cover the configuration and operation of the CobraNet®

module. A description of CobraNet® can be found on www.cobranet.info. Here also

CobraNet® Discovery can be downloaded. This is the tool to discover and configure

CobraNet® interfaces, including the VARI CobraNet® module.

10 en | System Overview VARI-directional array

2018.06 | V1.3 | Installation manual Bosch Security Systems B.V.

3.1 What’s in the packaging

In addition to the line array itself, each VARI-B and VARI-BH base unit is shipped with the

following items:

Qty Item Use

1 Imporant Safety Instructions

1 Right-angled IEC connector (C13, rewireable) AC mains input

2 Cable tie, nylon Mains cable strain relief

4 Phoenix connectors, 3-pole, 3.81 mm-pitch Inputs (line level), failure relay,

control voltage

2 Phoenix connectors, 5-pole, 3.81 mm-pitch RS-485 in/out

2 Phoenix connectors, 2-pole, 5.08 mm-pitch Inputs (100 V line)

1 Phoenix connector, 2-pole, 7.62 mm-pitch DC power input

2 Hinged mounting bracket Wall mounting

4 30 mm hex-headed screws with washers and

wall plugs

Fixings for wall mounting

1 Grille removal tool Removal of front protective grille

In addition to the line array itself, each VARI-E extension unit is shipped with the following

items:

Qty Item Use

2 M5 x 12 mm hex-headed bolts Secure Extension to base unit

1 Hinged mounting bracket Wall mounting

2 30 mm hex-headed screws with washers and

wall plugs

Fixings for wall mounting

The VARI-CS Configuration Set comprises the following items:

Qty Item Use

1 USB to RS-485 interface, with manual Hardware interface

1 USB cable, 1.8 m

(USB Type A to USB Type B)

PC-to-interface cable

1 RS-485 cable, 5 m

(5-pin Phoenix to 5-pin Phoenix)

Interface-to-VARI cable

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