Bosch LC2-PC30G6-4 Istruzioni di montaggio

Installation and User Instructions

LC2-PC30G6-4

LC2-PC30G6-8

LC2-PC30G6-8L

LC2-PC60G6-8H

LC2-PC60G6-10

Bosch Prosound Ceiling Speakers

Bosch Security Systems | 2008-05

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

Welcome

Thank you for purchasing Bosch loudspeakers. Read

through this manual to familiarize yourself with fea-

tures, 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 wave-

guide-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. Itis the responsibility of

the installer to ensurethat all speakers aresafely

installed in accordance with all such regulations.

When speakers aresuspended, Bosch strongly rec-

ommends that the system be inspected at least once

ayear. If any sign of weakness or damage is detect-

ed, remedial action should be taken immediately.

The user is responsible for making sure that the sup-

porting surfaces, and any additional hardware used,

is capable of supporting the loudspeaker.Any hard-

wareused to suspend a loudspeaker array that is not

provided by/associated with Bosch is the responsibil-

ity 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

Welcome/Safety/Important Features

Bosch Security Systems | 2008-05 2

Model Summary/Packing List

Figure 1: packing list

LC2-PC30G6-4

Perfect for conventional rooms. It has excellent

bandwidth in an esthetically very unobtrusive instal-

lation 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 pro-

vide 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 installa-

tions where a flush-mount design is desired but demand

for high-quality audio exists. Features a 4-point mount-

ing 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-PC60G6-8H

The LC2-PC60G6-8H is ideal for high ceilings and

reverberant “problem” rooms. Its exclusive ported, wave-

guide-coupled, 8-inch driver provides excellent intelligi-

bility and definition. The LC2-PC60G6-8H patent-

pending design provides great coverage control through-

out 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

atuned high performance enclosure to give amazing

lowfrequency performance down to 45Hz! 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 ceiling

model.

Packing List (Figure 1)

Figure Quantity Part

A2 Speaker system

B4 Tile rails

C2 C-ring support

D 2 Grille

E1 Owner’s manual

F4 Support ring screws

G1 Cutout template

H2 Paint Shield

A (x2)

C(x2)

D (x2)

F(x4)

B(x4)

H (x2)

Bosch Security Systems | 2008-05 3

Bosch Ceiling Series Systems (sold in pairs)

Model 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 LC2-PC30G6-8 above except with low-profile backcan

LC2-PC60G6-8H 8"waveguide-coupled coaxial speaker with horn-loaded, Ti-coated tweeter

LC2-PC60G6-10 10" High performance subwoofer

Product Feature Identification

Grille safety tether

Grille

Seismic tab

(auxiliary support ring)

Ceramic connector

Rotating mounting tabs

Figure 3: Top of speaker

Steel

backcan

Mounting

screws

Tap

selector

Grille safety

tether hole

Figure 2: Bottom of speaker

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 ceil-

ings is included. The ceiling speaker assembly is held

in place by mounting tabs that securely grip the ceil-

ing material. Input wiring is attached to a removable

terminal block connector that can be pre-wired if nec-

essarybefore 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, insertthe

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

Bosch Security Systems | 2008-05 5

Installation and Wiring

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.

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 con-

nector terminals as described belowand 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 cor-

rect 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-PC60G6-8H,

the polarity of the LC2-PC60G6-10 subwoofer

should be reversed. See Figures 7 and 8.

Screwdriver

LC2-PC60G6-10 Subwoofer LC2-PC30G6-4 Loudspeaker

LC2-PC60G6-10 Subwoofer LC2-PC30G6-8/

LC2-PC60G6-8H/LC2-PC30G6-8L-

Loudspeaker

Figure 8: Subwoofer polarity with LC2-

PC30G6-8/LC2-PC60G6-8H/

LC2-PC30G6-8L

Figure 7: Subwoofer polarity with

LC2-PC30G6-4

Bosch Security Systems | 2008-05 6

INSTALLATION NOTE: CEILING TILE

CAUTION

When mounting the units into 2'˘2' or 2'˘4' sus-

pended ceiling tiles, DO NOT install them in light-

weight 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 sit-

uations and MUST remove most of the force of the

speaker on the tile to ensurethat 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 screwclockwise 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).

INSTALLATION 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.

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

beforeinstalling the grille. Insome 70V/100V con-

stant voltage installations it is advisable to leave the

grilles off if final speaker audio level balance adjust-

ments are to be made later. After the levels are

adjusted the grilles can then be installed.

Installation and Wiring

Figure 11: Attach auxiliary support line

Figure 12: Adjust tap selector

(left: LC2-PC30G6-4/LC2-PC30G6-8/

LC2-PC30G6-8L; right: LC2-PC60G6-10/

LC2-PC60G6-8H)

Figure 9: Mount

speaker into ceiling

Figure 10: Tighten mounting tabs

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)

INSTALLATION NOTE:

GRILLE SAFETY FEATURE

Bosch grilles features a unique safety tether to pre-

vent 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 proce-

dure around the perimeter of the grille, loosening a

portion at a time until the grille is removed.

Installation and Wiring

Bosch Security Systems | 2008-05 7

Figure 13: Attach the grille

If the speaker is installed in an area where the inte-

rior 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.

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

45˚ 45˚

180˚

Baffle Can

(do not

paint)

Figure 14: Spray-painting angles

Appendix A — Painting the Speaker

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