Bosch LB20-PC30E-5D Manuel utilisateur

Premium Cabinet Loudspeakers

en Installation manual

Table of contents

1Safety 4

1.1 Suspension 4

1.2 Notices 4

2Short information 5

3Introduction 6

3.1 System features 6

3.2 Packing list 7

3.3 Product information 9

4Installation and wiring 10

4.1 Installing the speaker 10

4.2 Wiring 13

4.2.1 Wall bracket wiring 13

4.2.2 Alternative Euroblock connection 14

4.3 Transformer taps 15

4.3.1 LB20-PC15-4 cabinet speakers 70V/100V 16

4.3.2 LB20-PC30-5 cabinet speakers 70V/100V 17

4.3.3 LB20-PC60-8 cabinet speakers 70V/100V 17

4.4 Replacing the logo 18

5Troubleshooting 19

6Technical data 20

6.1 LB20-PC40-4/LB20-PC15-4 cabinet speakers 20

6.1.1 Dimensions 21

6.1.2 Frequency response and impedance 21

6.2 LB20-PC75-5/LB20-PC30-5 cabinet speakers 22

6.2.1 Dimensions 23

6.2.2 Frequency response and impedance 23

6.3 LB20-PC90-8/LB20-PC60-8 cabinet speakers 24

6.3.1 Dimensions 25

6.3.2 Frequency response and impedance 25

7Wall bracket dimensions 26

7.1 LB20-PC40-4/LB20-PC15-4 wall bracket dimensions 26

7.2 LB20-PC75-5/LB20-PC60-5/LB20-PC90-8/LC20-PC60-8 wall bracket dimensions 27

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Bosch Security Systems B.V. Installation manual 2017.08 | 01 | F.01U.345.357

Safety

Suspension

Warning!

Suspending any object is potentially dangerous and should only be attempted by individuals

who have thorough knowledge of the techniques and regulations of suspending objects

overhead. Bosch strongly recommends all loudspeakers be suspended taking into account all

current national, federal, state, and local laws and regulations. It is the responsibility of the

installer to ensure all loudspeakers are safely installed in accordance with all such

requirements. When loudspeakers are suspended, Bosch strongly recommends the system be

inspected at least once per year or as laws and regulations require. If any sign of weakness or

damage is detected, remedial action should be taken immediately. The user is responsible for

making sure the wall, ceiling, or structure is capable of supporting all objects suspended

overhead. Any hardware used to suspend a loudspeaker not associated with Bosch is the

responsibility of others.

Redundant safety point

As an added safety measure, it is suggested the user install an extra suspension point back to

the building structural supports. This redundant safety point should have as little slack as

possible (less than 1-inch is preferable).

Figure 1.1: Redundant safety point - 4" (left), 5" (center), 8" (right)

Notices

Old electrical and electronic appliances

Electrical or electronic devices that are no longer serviceable must be collected separately and

sent for environmentally compatible recycling (in accordance with the European Waste

Electrical and Electronic Equipment Directive).

To dispose of old electrical or electronic devices, you should use the return and collection

systems put in place in the country concerned.

any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior

written permission of the publisher. For information on getting permission for reprints and

excerpts, contact Bosch.

The content and illustrations are subject to change without prior notice.

1.1

1.2

4en | Safety Premium Cabinet Loudspeakers

2017.08 | 01 | F.01U.345.357 Installation manual Bosch Security Systems B.V.

Short information

The following table lists products in a family, with CTN (Commercial Type Number) and

identifying product name DESCRIPTION.

CTN Description

LB20-PC40-4D Cabinet speaker 4" 8 Ohm black pair

LB20-PC40-4L Cabinet speaker 4" 8 Ohm white pair

LB20-PC15-4D Cabinet speaker 4" 70/100V black pair

LB20-PC15-4L Cabinet speaker 4" 70/100V white pair

LB20-PC75-5D Cabinet speaker 5" 8 Ohm black pair

LB20-PC75-5L Cabinet speaker 5" 8 Ohm white pair

LB20-PC30-5D Cabinet speaker 5" 70/100V black pair

LB20-PC30-5L Cabinet speaker 5" 70/100V white pair

LB20-PC90-8D Cabinet speaker 8" 8 Ohm black pair

LB20-PC90-8L Cabinet speaker 8" 8 Ohm white pair

LB20-PC60-8D Cabinet speaker 8" 70/100V black pair

LB20-PC60-8L Cabinet speaker 8" 70/100V white pair

Premium Cabinet Loudspeakers Short information | en 5

Bosch Security Systems B.V. Installation manual 2017.08 | 01 | F.01U.345.357

Introduction

The premium cabinet loudspeakers from Bosch are a line of compact, high-performance, two-

way, full-range surface mount loudspeakers with excellent wide and uniform coverage, and

outstanding performance. Their design makes these practically invisible for use in background

and foreground music, paging, and sound reinforcement applications, making them ideal for

indoor and outdoor applications, such as restaurants, bars, patios, retail, fitness clubs,

hospitality, theme parks, leisure venues, and others. With unparalleled ease-of-installation,

sturdy weather resistance, modern and delicate look, and flexible mounting options, the

premium cabinet loudspeakers are the perfect solution for a wide variety of surface mount

applications.

These full-range loudspeakers (except for the LB20-PC60EW-5) include a unique and

innovative mount system from Bosch, prepared to make any job easier. This mount system

allows for 90 degrees of rotation horizontally and 45 degrees of rotation vertically. It comes

already assembled and is easily installed on walls and ceilings. Its unique and innovative

mount system makes every installation quick, simple, and reliable.

Read through this manual to familiarize yourself with the safety information, features, and

applications before you use these products.

System features

LB20-PC40-4/LB20-PC15-4

– Innovative mount system is included for quick, simple, and reliable installations

– Carefully engineered for outdoor environments (IP54), without compromising

performance

– Long throw 4" (102 mm) woofer housed in a fire rated ABS plastic enclosure for extended

LF performance down to 75 Hz

– 40 W power handling provides for 103 dB maximum SPL (109 dB peak)

– 70/100 V transformer version (LB20-PC15-4) available for constant voltage systems

LB20-PC75-5/LB20-PC30-5

– Innovative mount system is included for quick, simple, and reliable installations

– Carefully engineered for outdoor environments (IP54), without compromising

performance

– Long throw 5.25" (133 mm) woofer housed in a fire rated ABS plastic enclosure for

extended LF performance down to 60 Hz

– 75 W power handling provides for 109 dB maximum SPL (115 dB peak)

– 70/100 V transformer version (LB20-PC30-5) available for constant voltage systems

LB20-PC90-8/LB20-PC60-8

– Innovative mount system is included for quick, simple, and reliable installations

– Carefully engineered for outdoor environments (IP54), without compromising

performance

– Long throw 8" (203 mm) woofer housed in a fire rated ABS plastic enclosure for extended

LF performance down to 50 Hz

– 90 W power handling provides for 110 dB maximum SPL (116 dB peak)

– 70/100 V transformer version (LB20-PC60-8) available for constant voltage systems

3.1

6en | Introduction Premium Cabinet Loudspeakers

2017.08 | 01 | F.01U.345.357 Installation manual Bosch Security Systems B.V.

Packing list

Item Quantity Component

A 2 Speakers with speaker brackets attached

B 2 Wall mount brackets

C 2 Dust covers

D 1 Allen wrench

E 2 Grille logos (spare)

F 2 Safety screws for the mounting brackets

G 2 Safety screw caps for the mounting brackets

H 2 Covers for the locking bolt

I 1 Installation manual

Table 3.1: Components list for speakers without transformer

A (x2) B (x2) D

C (x2) E (x2)

F (x2) G (x2) H (x2) I

Figure 3.1: Components list for speakers without transformer

3.2

Premium Cabinet Loudspeakers Introduction | en 7

Bosch Security Systems B.V. Installation manual 2017.08 | 01 | F.01U.345.357

Item Quantity Component

A 2 Speakers with speaker brackets attached

B 2 Wall mount brackets

C 2 Dust covers

D 1 Allen wrench

E 2 Grille logos (spare)

F 2 Safety screws for the mounting brackets

G 2 Safety screw caps for the mounting brackets

H 2 Covers for the locking bolt

I 1 Installation manual

J 2 Flush input covers

K 8 Screws for flush input covers

Table 3.2: Components list for speakers with transformer

A (x2) B (x2) D

C (x2) E (x2)

F (x2) G (x2) H (x2) IJ (x2) K (x8)

Figure 3.2: Components list for speakers with transformer

8en | Introduction Premium Cabinet Loudspeakers

2017.08 | 01 | F.01U.345.357 Installation manual Bosch Security Systems B.V.

Product information

Item Description

A Grille

B Bubble level

C Wall bracket

D Safety cable loop

E Flush input cover

F Audio wire hole

G Locking bolt

H Audio connector

I Safety screw hole for bracket

J Speaker bracket

Table 3.3: Product information for all models

Figure 3.3: Product information (LB20-PC75-5/LB20-PC30-5 model shown)

3.3

Premium Cabinet Loudspeakers Introduction | en 9

Bosch Security Systems B.V. Installation manual 2017.08 | 01 | F.01U.345.357

Installation and wiring

Installing the speaker

For safety, ensure the mounting surface supports more than the weight of the speaker. Use

only industry-accepted fasteners and mounting methods when mounting the wall bracket.

Consult an expert if you are unsure.

Caution!

It is the installer's responsibility to determine and use the proper mounting hardware for

the wall construction type.

Disregarding this caution could result in damage to the product and personal injuries may

occur.

Installing the wall bracket vertically

To install the wall bracket vertically, do the following:

1. Drill a hole into the wall for the wire.

The size of the hole is dependent on the size of the wire used.

2. Push the wire thru the hole.

3. Adjust the wall bracket until the bubble is level.

4. Install four mounting screws to secure the wall bracket to the wall.

5. Connect the wires to wall bracket audio connectors, as shown in the wiring section.

4.1

10 en | Installation and wiring Premium Cabinet Loudspeakers

2017.08 | 01 | F.01U.345.357 Installation manual Bosch Security Systems B.V.

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