Bosch LC2-PC30G6-4 Mode d’emploi
Prosound Ceiling Speakers
LC2-PC30G6-4 | LC2-PC30G6-8 | LC2-PC30G6-8L | LC2-PC60G6-8H | LC2-
PC60G6-10
en Installation and User Instructions
Table of contents
1Safety 4
2Welcome 5
2.1 Important Features 5
3System overview 6
3.1 Model Summary 6
3.2 Packing List 7
3.3 Product Feature Identification 8
4Installation and Wiring 9
4.1 Step 1 — Cut the Hole 9
4.2 Step 2 — Install C-Ring and/or Tile Rails 9
4.3 Step 3 — Attach Wiring to the Ceramic Connector 10
4.4 Step 4 — Mount the Speaker into the Ceiling 11
4.5 Step 5 — Connect an Auxiliary Support Line 11
4.6 Step 6 — Adjust Tap Selector 12
4.7 Step 7 — Attach the Grille 12
5Troubleshooting 14
6Technical data 15
7Appendices 17
7.1 Appendix A Painting the Speaker 17
Prosound Ceiling Speakers Table of Contents | en 3
Bosch Security Systems B.V. Installation and User Instructions 2016.05 | 12 |
Safety
Safety First
Suspending any object is potentially dangerous and should only be attempted by individuals
who have a thorough knowledge of the techniques and regulations of rigging objects
overhead. Bosch strongly recommends that all speakers be suspended taking into account all
current national, federal, state and local regulations. It is the responsibility of the installer to
ensure that all speakers are safely installed in accordance with all such regulations. When
speakers are suspended, Bosch strongly recommends that the system be inspected at least
once a year. If any sign of weakness or damage is detected, remedial action should be taken
immediately. The user is responsible for making sure that the supporting surfaces, and any
additional hardware used, is capable of supporting the loudspeaker. Any hardware used to
suspend a loudspeaker array that is not provided by/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.
!
Caution!
Ceiling mount speaker’s safety cable
The safety cable should be installed with a minimum of 3-inches (76.2 mm) of slack.
1
4en | Safety Prosound Ceiling Speakers
2016.05 | 12 | Installation and User Instructions Bosch Security Systems B.V.
Welcome
Thank you for purchasing Bosch loudspeakers. Read through this manual to familiarize
yourself with features, applications, and precautions before you use these products.
Bosch loudspeakers use innovative design and materials to provide premium-level
performance in a flush-mount ceiling format. Four models comprise by Bosch: the LC2-
PC30G6-4 with a 4-inch LF driver and a .75-inch, titanium-coated tweeter with waveguide; the
LC2-PC30G6-8 with an 8-inch LF driver and a 1-inch titanium-coated tweeter with waveguide;
the LC2-PC60G-8H with a fully waveguide-loaded 8-inch LF driver and a 1-inch titanium coated
tweeter; and the LC2-PC60G6-10 , a true ceiling-mounted subwoofer designed to augment and
extend the full-range model’s low-frequency response.
Important Features
– Model for model, has superior performance to competing brands
– Comes with both 70V/100V or 8-ohm operation standard on every model
– Includes all installation accessories commonly needed for most jobs
– Designed for use in voice alarm systems
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2.1
Prosound Ceiling Speakers Welcome | en 5
Bosch Security Systems B.V. Installation and User Instructions 2016.05 | 12 |
System overview
Model Summary
LC2-PC30G6-4
Perfect for conventional rooms. It has excellent bandwidth in an esthetically very unobtrusive
installation profile. Its compact design fits in tight areas. Its 4-inch woofer and waveguide-
coupled, titanium-coated dome tweeter give smooth, wide frequency response. The enclosure
is ported and tuned to provide surprising bass response in such a compact package. Features
an easy 3-point mounting system for quick installations.
LC2-PC30G6-8
The LC2-PC30G6-8 has a specially tuned enclosure and 8-inch woofer to provide amazing bass
response. The 1-inch waveguide-coupled tweeter gives smooth controlled coverage out to 20
kHz. Perfect for installations where a flush-mount design is desired but demand for high-
quality audio exists. Features a 4-point mounting system to make installations fast and easy.
LC2-PC30G6-8L
The LC2-PC30G6-8L is the same as the LC2-PC30G6-8 but in a low-profile installation
package. Ideal for tight ceiling spaces.
LC2-PC60G-8H
The LC2-PC60G-8H is ideal for high ceilings and reverberant “problem” rooms. Its exclusive
ported, waveguide-coupled, 8-inch driver provides excellent intelligibility and definition. The
8.2HC’s patent pending design provides great coverage control throughout the voice range
and above. No other ceiling speaker system provides the combination of excellent pattern
control, wide bandwidth, high power handling, and compact design like the LC2-PC60G-8H.
LC2-PC60G6-10
The LC2-PC60G6-10 packs a 10-inch subwoofer in a tuned high performance enclosure to give
amazing low frequency performance down to 45 Hz! It is one of the few quick-mount ceiling
TRUE subwoofers available. Flexible installation and powerful low-end performance make it
the ideal mate to any Bosch ceiling model.
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3.1
6en | System overview Prosound Ceiling Speakers
2016.05 | 12 | Installation and User Instructions Bosch Security Systems B.V.
Packing List
Item Quantity Part
A 2 Speaker system
B 4 Tile rails
C 2 C-ring support
D 2 Grille
E 1 Owner’s manual
F 4 Support ring screws
G 1 Cutout template
H 2 Paint shield
Figure 1: Packing list
3.2
Prosound Ceiling Speakers System overview | en 7
Bosch Security Systems B.V. Installation and User Instructions 2016.05 | 12 |
Product Feature Identification
1
2
3
4
Figure 2: Bottom of speaker Figure 3: Top of speaker
Item Description Item Description
1 Steel back can 5 Rotating mounting tabs
2 Mounting screws 6 Ceramic connector
3 Tap selector 7 Seismic tab (auxiliary support ring)
4 Grille safety tether hole 8 Grille safety tether
Bosch Ceiling Series Systems (sold in pairs)
Model Part No Description
LC2-PC30G6-4 4" coaxial speaker with horn-loaded, Ti-coated tweeter
LC2-PC30G6-8 8" coaxial speaker with horn-loaded, Ti-coated tweeter
LC2-PC30G6-8L Same as C8.2 above except with low-profile backcan
LC2-PC60G-8H 8" waveguide-coupled coaxial speaker with horn-loaded, Ti-coated tweeter
LC2-PC60G6-10 10" High performance subwoofer
3.3
8en | System overview Prosound Ceiling Speakers
2016.05 | 12 | Installation and User Instructions Bosch Security Systems B.V.
Installation and Wiring
The Bosch mounting system has been designed so that, if necessary, the installation can be
done from beneath the ceiling. In some cases with a suspended ceiling grid, however, it may
be easier to access from both the top and bottom of the ceiling tile during the installation
process. Typical installation hardware needed for either suspended ceilings or sheetrock
ceilings is included. The ceiling speaker assembly is held in place by mounting tabs that
securely grip the ceiling material. Input wiring is attached to a removable terminal block
connector that can be prewired if necessary before speaker installation to speed up the
installation process.
Step 1 — Cut the Hole
For suspended tile or sheetrock ceilings, cut out the hole either by tracing the cardboard
template or with a circular cutter set to the appropriate cutout size. If the wire has been pre-
installed, pull the wiring through the cutout hole.
Figure 4: Cut ceiling hole
Step 2 — Install C-Ring and/or Tile Rails
All Bosch speakers come packaged with two types of backing hardware: a C-ring and two tile
rails. For suspended ceiling installations, insert the C-ring through the hole cut in the ceiling
tile. Place the C-ring around the hole with the tabs located as shown in Figure 5. Insert the tile
rails through the cut hole in the ceiling tile. Snap the two rails into the two tabs in the C-ring
and align the rails so that the ends extend OVER the T-channel grid on the side of the tile.
Secure the rails onto the C-ring tabs by inserting a screw though each tab into the rail, as
shown in Figure 5.
Figure 5: Secure rails to C-Ring
INSTALLATION NOTE: TILE RAILS AND C-RING
Each speaker comes with two tile rails which are designed to fit either standard 24-inch-wide
or 600-mm-wide tiles. It is important to note that the tile rail pieces do not actually attach to
the T-grid struts. The ends of the rails sit OVER the T-grid strut. Normally, the tile supports the
rails. The tile rails are pre-punched at regular intervals with holes along their length. This
allows the C-ring to be positioned at any point along the rail. If the tile comes out or falls
apart, the ends of the support rails fall onto the T-grid, which prevents the speaker assembly
from falling.
4
4.1
4.2
Prosound Ceiling Speakers Installation and Wiring | en 9
Bosch Security Systems B.V. Installation and User Instructions 2016.05 | 12 |
Always use all included support hardware when installing into suspended ceiling tiles to make
sure the installation is secure.
For sheetrock ceiling installations, the C-ring should be used by itself to reinforce the ceiling
material and to spread out the pressure from the speaker hold-down tabs. Guide the C-ring
through the cut hole in the ceiling, and place it on the back side of the hole before inserting
the speaker.
Step 3 — Attach Wiring to the Ceramic Connector
Insert the bare end of wire into the appropriate connector terminals as described below and
screw down the hold-down screw until tight, using a small screwdriver.
Figure 6:Tighten with screwdriver
When adding a subwoofer, be sure to observe the correct polarity. The LC2-PC60G6-10
subwoofer has been designed for optimum performance when used with the LC2-PC30G6-4.
In order to maximize the low frequency output when used with the LC2-PC30G6-8, LC2-
PC30G6-8L or LC2-PC60G-8H, the polarity of the LC2-PC60G6-10 subwoofer should be
reversed. See Figures 7 and 8.
Figure 7: Subwoofer polarity with LC2-PC30G6-4
4.3
10 en | Installation and Wiring Prosound Ceiling Speakers
2016.05 | 12 | Installation and User Instructions Bosch Security Systems B.V.
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1
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