Bosch LC20-PC60G6-6 Installation and operation manual

Premium Ceiling Speakers
LC20-PC60G6-6 and LC20-PC60G6-8
en Installation Note

Table of contents
1Safety 4
2Welcome 5
2.1 Important features 5
3System overview 6
3.1 Packing list 6
3.2 Product feature identification 7
3.3 Dimensions 7
3.4 Frequency response and impedance 8
3.5 Beamwidth 8
3.6 Directivity 8
3.7 Horizontal and vertical polar response 9
4Installation 11
5Technical data 15
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Bosch Security Systems B.V. Installation Note 2015.06 | 03 |

Safety
!
Warning!
Suspending any object is potentially dangerous and should only be attempted by individuals
who have a 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.
!
Caution!
The seismic tab (auxiliary support ring) is not intended for primary suspension of the
loudspeaker. The seismic tab should only be used as a secondary safety point.
1
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2015.06 | 03 | Installation Note Bosch Security Systems B.V.

Welcome
Thank you for purchasing Premium Ceiling Speakers. Read through this manual to familiarize
yourself with the features, applications, and precautions before you use these products.
Premium Ceiling Speakers use innovative design and materials to provide high performance in
a flush-mount ceiling format. Two (2) models comprise the Premium Ceiling Speaker family:
LC20-PC60G6-6 and LC20-PC60G6-8.
Important features
LC20-PC60G6-6 — 6-inch Premium Ceiling Speaker
– High output true compression driver for wide dispersion and superior coverage control
out to 10 kHz
– Long throw 6.5 inch (165 mm) woofer housed in a large vented steel enclosure for
extended LF performance down to 50 Hz
– 200 watt power handling provides for 113 dB maximum SPL
– Front baffle transformer tap adjustment switch
– Includes tile rails and “C” mounting ring
LC20-PC60G6-8 — 8-inch Premium Ceiling Speaker
– High output true compression driver for wide dispersion and superior coverage control
out to 10 kHz
– Long throw 8-inch (200 mm) woofer housed in a large vented 14 gauge steel enclosure
for extended LF performance down to 40 Hz
– 200 watt power handling provides for 114 dB maximum SPL
– Front baffle transformer tap adjustment switch
– Includes tile rails and “C” mounting ring
2
2.1
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Bosch Security Systems B.V. Installation Note 2015.06 | 03 |

System overview
Packing list
Item Quantity Description
A 2 Speaker system
B 4 Tile rails
C 2 C-ring support
D 2 Grille
E 1 Manual
F 4 Support ring screws
G 2 Terminal connector
H 1 Cutout template
I 2 Paint shield
J 2 Ceramic blocks
Figure 3.1: Components in kit
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3.1
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2015.06 | 03 | Installation Note Bosch Security Systems B.V.

Product feature identification
Figure 3.2: Bottom and top of the ceiling speaker
Dimensions
LC20-PC60G6-6 Dimensions LC20-PC60G6-8 Dimensions
3.2
3.3
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Bosch Security Systems B.V. Installation Note 2015.06 | 03 |

Frequency response and impedance
LC20-PC60G6-6 Frequency Response and Impedance LC20-PC60G6-8 Frequency Response and Impedance
Beamwidth
LC20-PC60G6-6 Beamwidth LC20-PC60G6-8 Beamwidth
Directivity
LC20-PC60G6-6 Directivity LC20-PC60G6-8 Directivity
3.4
3.5
3.6
8en | System overview Premium Ceiling Speakers
2015.06 | 03 | Installation Note Bosch Security Systems B.V.

Horizontal and vertical polar response
LC20-PC60G6-6 Polar Plots (1/3 Octave):
500 Hz
630 Hz
800 Hz
1 KHz
1.25 KHz
1.6 KHz
2 KHz
2.5 KHz
3.15 KHz
4 KHz
5 KHz
6.3 KHz
8 KHz
10 KHz
12.5 KHz
16 KHz
20 KHz
Horizontal = Black
Vertical = Gray
400 Hz
3.7
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LC20-PC60G6-8 Polar Plots (1/3 Octave):
500 Hz
630 Hz
800 Hz
1 KHz
1.25 KHz
1.6 KHz
2 KHz
2.5 KHz
3.15 KHz
4 KHz
5 KHz
6.3 KHz
8 KHz
10 KHz
12.5 KHz
16 KHz
20 KHz
Horizontal = Black
Vertical = Gray
400 Hz
10 en | System overview Premium Ceiling Speakers
2015.06 | 03 | Installation Note Bosch Security Systems B.V.