Bosch Prosound Ceiling Speakers
Installation and User Instructions
LC2 -PC30G6 -4
en
LC2 -PC30G6 -8
LC2 -PC30G6 -8 L
LC2 -PC60G6 -8 H
LC2 -PC60G6 -10
Welcome. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Safety First . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Important Features . . . . . . . . . . . . . . . . . . . . . . . . 1
Model Summary . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Packing List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Product Feature Identification. . . . . . . . . . . . . . . . 3
Installation and Wiring . . . . . . . . . . . . . . . . . . . . . 4
Step 1 — Cut the Hole . . . . . . . . . . . . . . . . . . 4
Step 2 — Install C-Ring
and/or Tile Rails . . . . . . . . . . . . . . . . . . . . . 4
Step 3 — Attach Wiring to the
Ceramic Connector . . . . . . . . . . . . . . . . . . . 5
Step 4 — Mount the Speaker into the
Ceiling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Step 5 — Connect an Auxiliary
Support Line . . . . . . . . . . . . . . . . . . . . . . . . 6
Step 6 — Adjust Tap Selector. . . . . . . . . . . . . . 6
Step 7 — Attach the Grille. . . . . . . . . . . . . . . . 7
Appendix A — Painting the Speaker. . . . . . . . . . . 8
Appendix B — Product Specifications . . . . . . . . 10
Table of Contents
Bosch Security Systems | 2008-05
Welcome/Safety/Important Features
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-PC60G6-8H 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.
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.
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.
Bosch Security Systems | 2008-05 1
Model Summary/Packing List
A (x2)
C(x2)
D (x2)
F(x4)
B(x4)
G
H (x2)
E
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, titaniumcoated 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 give 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 LC2PC30G6-8 but in a low-profile installation package.
Ideal for tight ceiling spaces.
LC2-PC60G6-8H
The LC2-PC60G6-8H is ideal for high ceilings and
reverberant “problem” rooms. Its exclusive ported, waveguide-coupled, 8-inch driver provides excellent intelligibility and definition. The LC2-PC60G6-8H patentpending 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-PC60G6-8H.
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 45Hz! It is one
of the few quick-mount ceiling TRUE subwoofers
av
performance make it the ideal mate to any ceiling
model.
lexible installation and po
ailable. F
w-end
ful lo
er
w
Packing List (Figure 1)
Figure 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
Bosch Security Systems | 2008-05 2
Product Feature Identification
Grille safety tether
Grille
Seismic tab
(auxiliary support ring)
Ceramic connector
Rotating mounting tabs
Steel
backcan
Mounting
screws
Tap
selector
Grille safety
tether hole
Bosch Ceiling Series Systems (sold in pairs)
Model Description
C2-PC30G6-44" coaxial speaker with horn-loaded, Ti-coated tweeter
L
LC2-PC30G6-8 8" coaxial speaker with horn-loaded, Ti-coated tweeter
LC2-PC30G6-8L Same as LC2-PC30G6-8 above except with low-profile backcan
C2-PC60G6-8H8" waveguide-coupled coaxial speaker with horn-loaded, Ti-coated tweeter
L
LC2-PC60G6-10 10" High performance subwoofer
Product Feature Identification
Figure 2: Bottom of speaker
Bosch Security Systems | 2008-05 3
Figure 3: Top of speaker
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 pre-wired if necessary before speaker installation to speed up the
installation process.
Step 1: Cut the Hole (Figure 4)
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 (Figure 5)
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
Bosch Security Systems | 2008-05 4
Installation and Wiring
Screwdriver
LC2-PC60G6-10 Subwoofer LC2-PC30G6-4 Loudspeaker
LC2-PC60G6-10 Subwoofer
LC2-PC30G6-8/
LC2-PC60G6-8H/LC2-PC30G6-8L-
Loudspeaker
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 600mm-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 prepunched 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 Tgrid, which prevents the speaker assembly from
falling.
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 (Figure 6)
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.
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 LC2PC30G6-8, LC2-PC30G6-8L or LC2-PC60G6-8H,
the polarity of the LC2-PC60G6-10 subwoofer
should be reversed. See Figures 7 and 8.
Figure 7: Subwoofer polarity with
LC2-PC30G6-4
Figure 8: Subwoofer polarity with LC2PC30G6-8/LC2-PC60G6-8H/
LC2-PC30G6-8L
Figure 6: Tighten with screwdriver
~
Bosch Security Systems | 2008-05 5
Installation and Wiring
INSTAL LATION NOTE: CEILING TILE
CAUTION
When mounting the units into 2'˘2' or 2'˘4' suspended ceiling tiles, DO NOT install them in lightweight fibreglass-type tiles without full secondary
support for the speaker as noted in Step 6. Such tiles
are not designed to support any substantial weight.
Speaker installation without secondary support will
cause the tile to sag and distort, even with the tile
bridge installed. The secondary support line at the
rear of the speaker MUST be strung taut in these situations and MUST remove most of the force of the
speaker on the tile to ensure that the speaker does
not deform the tile.
Step 4: Mount the Speaker Into
the Ceiling (Figure 9)
Push the speaker into the ceiling hole until the front
baffle rim is flush with
the ceiling. Tighten the
mounting tabs by turning
the screw clockwise until
the speaker is secure.
Please note that the first
clockwise quarter-turn
rotates the attachment
tabs outward. The
remaining turns tighten
the tabs down onto the
back of the ceiling surface
(see Figure 10).
Figure 9: Mount
speaker into ceiling
INSTAL LATION NOTE: MOUNTING TABS
For each attachment screw, first turn one half-turn
counterclockwise to release the mounting tab from
its guide.
Step 5: Connect an Auxiliary
Support Line (Figure 11)
Note the support ring on the back of the speaker.
The ring allows for connection to a independent
and secure anchor point. Construction codes often
require the use of this secondary support point.
Figure 11: Attach auxiliary support line
Step 6: Adjust Tap Selector
(Figure 12)
The tap selector switch is located on the front baffle.
Adjust the speaker to the appropriate tap setting
before installing the grille. In some 70V/100V constant voltage installations it is advisable to leave the
grilles off if final speaker audio level balance adjustments are to be made later. After the levels are
adjusted the grilles can then be installed.
Figure 12: Adjust tap selector
(left: LC2-PC30G6-4/LC2-PC30G6-8/
Figure 10: Tighten mounting tabs
LC2-PC30G6-8L; right: LC2-PC60G6-10/
LC2-PC60G6-8H)
Bosch Security Systems | 2008-05 6
Installation and Wiring
1
2
LC2-PC30G6-4, LC2-PC30G6-8 and
LC2-PC30G6-8L
In addition to the 8-ohm setting, the power taps are
30 W, 15 W, 7.5 W, and 3.7 W at both 70.7V and
100V, with a 1.8 W tap for 70.7V only.
LC2-PC60G6-8H and LC2-PC60G6-10
In addition to the 8-ohm setting, the power taps are
60 W, 30 W, and 15 W at both 70.7V and 100V,
with a 7.5 W tap for 70.7V only.
Step 7: Attach the Grille (Figure 13)
INSTAL LATION NOTE:
GRILLE SAFETY FEATURE
Bosch grilles features a unique safety tether to prevent the grille from falling if the grille is removed or
comes loose after installation.
First, install the grille’s safety tether by pushing
the grille fastener into the hole in the front of the
baffle (see Figure 13). Second, press the grille into
place until the front of the grille is flush with the
rim of the baffle. Make sure the grille is securely
seated to prevent it from vibrating loose.
If you need to remove the grille, the easiest way is
to insert two bent paper clips or other pointed objects
into holes in the grille, then apply slow even pressure
to pull down on the grille until that section of the
grille comes out slightly. Continue the same procedure around the perimeter of the grille, loosening a
portion at a time until the grille is removed.
Figure 13: Attach the grille
Bosch Security Systems | 2008-05 7
45˚ 45˚
180˚
180˚
Baffle
Can
(do not
paint)
Appendix A — Painting the Speaker
If the speaker is installed in an area where the interior design requires a color match, these speakers
are simple to paint. The speakers can accommodate
almost any type of latex or oil-based paint. The
bezel/rim can be painted before installation or after
mounting into the ceiling.
Painting Process
Clean the rim and grille with mineral spirits or
other light solvent. Do not use harsh solvents such
as gasoline, kerosene, acetone, or other chemicals. If
you use these cleaners you may permanently damage
the enclosure. Also, don’t use abrasives products
such as sandpaper or steel wool.
Either by rolling or spraying, apply two or more
thin coats of paint. If you are spraying, hold the
spray can at the angles shown in Figure 14.
Figure 14: Spray-painting angles
If you are painting the grille also, you must first
remove the internal grille cloth. Spray painting is
strongly recommended. If the grille is rolled or
brush painted, the grille may become clogged with
paint and the sound quality will suffer. After the
paint has dried, replace the internal grille cloth.
If you wish to paint the speaker along with the
ceiling after installation, insert a plastic or cardboard
paint shield into the front of the speaker to mask
the drivers and internal baffle, paint the speaker,
then remove the shield.
Bosch Security Systems | 2008-05 8
Appendix B — Product Specifications
w/passive crossover
compliance driver compliance driver compliance driver compliance driver compliance driver
(weatherized cone) (weatherized cone) (weatherized cone) (weatherized cone) (weatherized cone)
6.9" x 7.1" 10.0" x 10.6" 7.0" x 10.6" 11.9" x 12.6" 11.9" x 12.6"
(depth x diam.) (176 x 181 mm) (255 x 270 mm) (190 x 255 mm) (303 x 320 mm) (303 x 320 mm)
Specification LC2-PC30G6-4 LC2-PC30G6-8 LC2-PC30G6-8L LC2-PC60G6-8H LC2-PC60G6-10
Bosch Security Systems | 2008-05 9
Bezel diameter 8.3" (210 mm) 11.8" (300 mm) 11.8" (300 mm) 13.8" (350 mm) 13.8" (350 mm)
Dimensions
Weight 6 lbs (2.7 kg) 11 lbs (5.0 kg) 11 lbs (5.0 kg) 13.2 lbs (6.0 kg) 15.5 lbs (7.0 kg)
and bezel and bezel and bezel and bezel and bezel
Cabinet Steel enclosure and Steel enclosure and Steel enclosure and Steel enclosure and Steel enclosure and
construction UL94V-0 rated baffle UL94V-0 rated baffle UL94V-0 rated baffle UL94V-0 rated baffle UL94V-0 rated baffle
LF transducer 4" (100 mm) high- 8" (205 mm) high- 8" (205 mm) high- 8" (205 mm) high- 10" (260 mm) high-
dome dome dome dome
toggle anchors toggle anchors toggle anchors toggle anchors toggle anchors
(paintable surface) (paintable surface) (paintable surface) (paintable surface) (paintable surface)
HF transducer .75" (19 mm) Ti-coated 1" (25 mm) Ti-coated 1" (25 mm) Ti-coated 1" (25 mm) Ti-coated N/A
Mounting system Integrated 3-point Integrated 4-point Integrated 4-point Integrated 4-point Integrated 4-point
Available colors White White White White White
Grille construction Powder-coated steel Powder-coated steel Powder-coated steel Powder-coated steel Powder-coated steel
Acoustic design Ported cabinet, Ported cabinet, Ported cabinet, Ported cabinet, Ported cabinet,
w/passive crossover w/passive crossover w/passive crossover internally damped
internally damped, internally damped, internally damped, two-way design, w/passive crossover
two-way design, two-way design, two-way design, waveguide-coupled, internally damped
Appendix B — Product Specifications
65 Hz–20 kHz 50 Hz–20 kHz 50 Hz–20 kHz 50 Hz–20 kHz 45 Hz–150 Hz
) overload protection) overload protection) overload protection) overload protection) overload protection)
ΩΩ
Specification LC2-PC30G6-4 LC2-PC30G6-8 LC2-PC30G6-8L LC2-PC60G6-8H LC2-PC60G6-10
response
(@ 8
Coverage pattern 130° conical 110° conical 110° conical 75° conical N/A
Sensitivity 86 dB 91 dB 91 dB 93 dB 94 dB
Power handling 50 W (with 75 W (with 75 W (with 75 W (with 100 W (with
Frequency
Bosch Security Systems | 2008-05 10
(SPL 1 W/1 m)
70V/100V 1.8 (70V only)/ 1.8 (70V only)/ 1.8 (70V only)/ 7.5 (70V only)/ 7.5 (70V only)/
configuration
power taps 3.7/7.5/15/30W 3.7/7.5/15/30W 3.7/7.5/15/30W 15/30/60 W 15/30/60 W
Included Tile bridge, Tile bridge, Tile bridge, Tile bridge, Tile bridge,
Input 8Ω; 70V/100V 8Ω; 70V/100V 8Ω; 70V/100V 8Ω; 70V/100V 8Ω; 70V/100V
accessories mounting ring mounting ring mounting ring mounting ring mounting ring
For more in formation vis it
www.boschsecuritysystems.com
© Bosch Security Systems B.V.
Data subject to change w ithout notice
2008-05 | en
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