Bosch LC20-PC60G6-6E Installation and operation manual

Premium Ceiling Speakers
LC20-PC60G6-6E | LC20-PC60G6-8E
en Installation Note

Table of contents
1Safety 4
1.1 Notices 4
2Introduction 5
2.1 Important features 5
3System overview 6
3.1 Packing list 6
3.2 Product features identification 7
3.3 Dimensions 7
3.4 Frequency response and impedance 8
3.5 Beamwidth 8
3.6 Directivity 8
3.7 Equalization 9
4Installation 10
5Troubleshooting 15
6Technical data 16
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Bosch Security Systems B.V. Installation Note 2017.01 | 02 | F.01U.321.490

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.
!
Caution!
When using the weatherized terminal cover, the original auxiliary support ring is no longer
used. Attach the safety cable to the auxiliary support ring on the weatherized terminal cover.
!
Caution!
Ceiling mount speaker’s safety cable
The safety cable should be installed with a minimum of 3-inches (76.2 mm) of slack.
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.
1
1.1
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2017.01 | 02 | F.01U.321.490 Installation Note Bosch Security Systems B.V.

Introduction
Premium Ceiling Speakers from Bosch use innovative design and materials to provide high
performance in a flush-mount ceiling format. The rear input cover for EN54 is used to create a
seal to protect the ceiling speaker from moisture and foreign particles, if properly installed.
The weatherized terminal cover must be used in all EN54 installations. Two models comprise
the family: LC20-PC60G6-6E and LC20-PC60G6-8E.
Read through this manual to familiarize yourself with the safety information, features, and
applications before you use these products.
Important features
LC20-PC60G6-6E — 6-inch Premium Ceiling Speaker
– Long throw 6.5 inch (165 mm) woofer housed in a large vented steel enclosure for
extended LF performance down to 50 Hz
– 100 watt power handling provides for 95 dB maximum SPL
– Front baffle transformer tap adjustment switch
– Includes tile rails, “C” mounting ring, and weatherized terminal cover
LC20-PC60G6-8E — 8-inch Premium Ceiling Speaker
– High output true compression driver for wide dispersion and superior coverage control
out to 20 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
– 100 watt power handling provides for 95 dB maximum SPL
– Front baffle transformer tap adjustment switch
– Includes tile rails, “C” mounting ring, and weatherized terminal cover
2
2.1
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Bosch Security Systems B.V. Installation Note 2017.01 | 02 | F.01U.321.490

System overview
Packing list
Item Quantity Description
A 2 Speaker systems
B 4 Tile rails
C 2 C-ring supports
D 2 Grilles
E 1 Installation note
F 1 Cutout template
G 4 Support ring screws
H 2 Terminal connectors
I 2 Ceramic blocks
J 2 Weatherized terminal covers
K 2 Gland nuts
L 8 Screws
C (x2)
B (x4)
F
A (x2)
D (x2)
H (x2)G (x4)
E
I (x2) L (x8)
J (x2) K (x2)
Figure 3.1: Components in kit
3
3.1
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2017.01 | 02 | F.01U.321.490 Installation Note Bosch Security Systems B.V.

Product features identification
1
2
3
5
4
6
7
8
9
10
11 14 15
13
12
Figure 3.2: Bottom and top of the ceiling speaker
Item Description Item Description
1 Steel backcan 9 Rotating mounting tabs
2 Mounting screws 10 Grille
3 Tap selector 11 Grille safety tether
4 Conduit knockout 12 Gasket attached to the cover
5 Removable input terminal connector 13 Knock out holes
6 Seismic tab (auxiliary support ring) 14 Weatherized terminal cover
7 Strain relief fitting 15 Seismic tab (auxiliary support ring)
8 Terminal cover plate
Dimensions
10.7 mm
[0.42 in]
Ø 280.5 mm [11.04 in]
Ø 213.30 mm [8.40 in]
248 mm
[9.76 in]
293.90 mm
[11.57 in]
Ø 248 mm [9.76 in]
11.6 mm
[0.46 in]
Ø 327 mm [12.87 in]
Ø 294.30 mm [11.59 in]
353.90 mm
[13.93 in]
Ø 260.80 mm [10.27 in]
308 mm
[12.13 in]
Figure 3.3: LC20-PC60G6-6E (left) and LC20-PC60G6-8E (right) dimensions
3.2
3.3
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Bosch Security Systems B.V. Installation Note 2017.01 | 02 | F.01U.321.490

Frequency response and impedance
50 100 1000 10000 20000
3.16
10
100
60.00000
70.00000
80.00000
90.00000
100.00000
Impedance (Ohms)
Sensitivity (dB)
Frequency (Hz)
Frequency, Half Space Impedance
50 100 1000 10000 200003.16
10
100
60.00000
70.00000
80.00000
90.00000
100.00000
Impedance (Ohms)
Sensitivity (dB)
Frequency (Hz)
Frequency, Half Space Impedance
LC20-PC60G6-6E Frequency Response and
Impedance 1 watt / 4 meters / on axis (With EN54
required equalization applied)
LC20-PC60G6-8E Frequency Response and Impedance
1 watt / 4 meters / on axis (With EN54 required
equalization applied)
Beamwidth
LC20-PC60G6-6E Beamwidth LC20-PC60G6-8E Beamwidth
Directivity
LC20-PC60G6-6E Directivity LC20-PC60G6-8E Directivity
3.4
3.5
3.6
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2017.01 | 02 | F.01U.321.490 Installation Note Bosch Security Systems B.V.

Equalization
When used in an EN54 installation the following equalization must be applied to the speakers:
LC20-PC60G6-6E LC20-PC60G6-8E
PEQ Frequency: 180 Hz PEQ Frequency: 152 Hz
PEQ Filter Q: 2.0 PEQ Filter Q: 2.0
PEQ Gain: -6.0 dB PEQ Gain: -8.0 dB
3.7
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Bosch Security Systems B.V. Installation Note 2017.01 | 02 | F.01U.321.490

Installation
248 mm (9.76 in)
294.3 mm (11.59 in)
Figure 4.1: Trace cutout template Figure 4.2: Cut hole
A: Speaker ground point
A
Figure 4.3: Secure rails to C-Ring Figure 4.4: Wiring – ground point
Figure 4.5: Install the gland nut into the cover Figure 4.6: Run the wire cable through the gland
nut.
4
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Figure 4.7: Run the wire cable through the
clamp.
Figure 4.8: Tighten the clamp down onto the wire.
+
+
+
-
-
-
Figure 4.9: Wiring single (left) double (right) Figure 4.10: Install the phoenix connector
Figure 4.11: Adjust the length of the wire from
the gland nut.
Figure 4.12: Hold the wire while lowering the cover
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B: Recommended installation torque is 10–14 in/lb (1.13–1.58 Newton Meters)a
B
Figure 4.13: Tighten four (4) screws to attach
the cover and tighten the gland nut
Figure 4.14: Weatherized terminal cover is attached
!
Caution!
When using the weatherized terminal cover, the original auxiliary support ring is no longer
used. Attach the safety cable to the auxiliary support ring on the weatherized terminal cover.
!
Caution!
Ceiling mount speaker’s safety cable
The safety cable should be installed with a minimum of 3-inches (76.2 mm) of slack.
C: Recommended auxiliary support line slack is 76.2 mm–305 mm (3 in–12 in).
C
Figure 4.15: Attach auxiliary support line Figure 4.16: Install the speaker into the ceiling
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Figure 4.17: Tighten mounting tabs Figure 4.18: Tap selector
Figure 4.19: Adjust tap selector Figure 4.20: Insert grille tether
Figure 4.21: Attach the grille Figure 4.22: Installation complete
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Wiring with the ceramic block
A: Speaker ground point
A
OR
Figure 4.15: Wiring – ground point Figure 4.16: Wiring – flex conduit
OR
Figure 4.17: Wiring – solid conduit
Notice!
Wiring with the ceramic block will invalidate the EN 54-24 approval.
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Troubleshooting
Problem Possible Causes Action
No output Amplifier Ensure the amplifier channel is being fed an input signal (preferably
via a signal input indicator on the amplifier).
Verify the amplifier channel’s volume is turned up.
Connect the loudspeaker and cable, which had no output to another
amplifier channel, ensuring an input signal is fed to the new amplifier
channel. If you then get output, the problem was the amplifier
channel. If not, then the problem is either the cable or the
loudspeaker.
Loudspeaker
cables(s)
Replace the cable(s) connecting the loudspeaker system and
amplifier.
Questionable or
intermittent output,
such as crackling
Faulty connection Ensure all cabling for proper connector contact. A bad connection can
result in intermittent contact or dramatically increased resistance,
which in turn can cause reduces output or noises unrelated to the
signal.
Improper power
tap setting
Verify the power tap setting under the loudspeaker grille is
appropriate for the installation and amplifier chosen.
Constant noise
such as buzzing,
hissing, or
humming
A faulty electronic
device in the signal
chain
Loudspeakers cannot generate these sounds by themselves; you may
have a faulty electronic device in the signal chain.
Poor system
grounding
Check and correct the system grounding, as required.
Poor low-frequency
output
Out-of-polarity
hookup between
multiple
loudspeakers
When two loudspeakers are hooked up out of polarity (out of phase),
the low frequencies cancel each other out. Try reversing the polarity
of one of the loudspeakers either by turning around a dual-banana
plug at the amplifier or by reversing the tip/sleeve leads on the jack.
Which ever condition results in greater low-frequency output is the in-
polarity condition.
If these suggestions do not solve your problem, contact your nearest dealer or distributor.
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Technical data
LC20-PC60G6-6E LC20-PC60G6-8E
Frequency Range (-10 db): 50 Hz – 20 kHz 40 Hz – 20 kHz
Nominal Coverage
(Conical):
100° 120°
Power Handling (Direct
Coupled):
200 W Program, 100 W Pink Noise as per EN54-24 standard
Sensitivity per EN54-24
standard (SPL 1 W / 4 m):
75 dB 74.5 dB
Max Calculated SPL per
EN54-24 standard:
60 watt Transformer coupled @ 4
meters: 92 dB
100 watt Direct coupled @ 4 meters:
95 dB
60 watt Transformer coupled @ 4
meters: 92 dB
100 watt Direct coupled @ 4 meters:
95 dB
Impedance: Direct Coupled: 8 Ohms
70V Transformer Coupled: 60 watt/83Ω, 30 watt/167Ω, 15 watt/333Ω, 7.5 watt/
667Ω
100v Transformer Coupled: 60watt/167Ω, 30 watt/333Ω, 15 watt/667Ω
LF Transducer: 165 mm (6.5 in) 200 mm (8 in)
HF Transducer: 35 mm Compression Driver
Transformer Taps: 70V: 60W, 30W, 15W, 7.5W, 8 ohm
100V: 60W, 30W, 15W, 8 ohm
Connectors: Removable locking 4-pin (Phoenix) 2.5 mm (12 AWG) max wire size
Enclosure: ABS Plastic (UL94V-O) Baffle, steel back can
Grille: Color matched steel grille with fabric
Dimensions (H x Dia): 294 mm x 280 mm (11.57 in x 11.0 in) 354 mm x 327 mm (13.94 in x 12.87 in)
Cutout Size: 248 mm (9.76 in) 294.3 mm (11.59 in)
Net Weight: 7.33 kg (16.15 lb) 8.19 kg (18.05 lb)
Shipping Weight:
(pair)
17.51 kg (38.6 lb) 20.91 kg (46.1 lb)
Support Hardware: C Ring, Tile Bridge, Weatherized Terminal Cover
Approvals: UL1480, 2043; CE, EN54-24:2008
Notice!
The specifications data was measured in an anechoic chamber according to EN 54-24.
Reference axis: Axis is on the center of grille surface and perpendicular to the grille surface.
Reference plane: Plane is on the grille surface and perpendicular to the reference axis.
Horizontal plane: Plane is containing the reference axis and perpendicular to the reference
plane.
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16 en | Technical data Premium Ceiling Speakers
2017.01 | 02 | F.01U.321.490 Installation Note Bosch Security Systems B.V.

Bosch Security Systems Inc.
130 Perinton Pkwy, Fairport, NY, 14450, USA
17
0359-CPR-00615
EN 54-24:2008
Loudspeaker for voice alarm systems
for fire detection and fire alarm systems for buildings
Ceiling loudspeakers LC20-PC60G6-6E, LC20-PC60G6-8E
See product manual F.01U.321.490 for further equalization and installation information.
Type A
0359
Frequency Reproducibility Horizontal Coverage Vertical Coverage
LC20-
PC60G6-8E
LC20-
PC60G6-6E
LC20-
PC60G6-8E
LC20-
PC60G6-6E
LC20-
PC60G6-8E
LC20-
PC60G6-6E
(HZ) dB/SPL dB/SPL Degrees Degrees Degrees Degrees
500 57.77 60.55 170 175 170 175
630 59.94 60.16
800 60.83 62.69
1000 60.91 61.74 160 160 160 160
1250 59.94 56.57
1600 62.09 59.72
2000 61.69 61.05 100 120 100 120
2500 61.47 60.89
3150 63.52 62.36
4000 63.49 62.99 85 90 85 90
Table 6.1: Reproducibility and coverage angles measured on an EN54-24 specified test baffle at 4 meters Signal at 1 watt of 1/3
octave band filtered pink noise.
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Bosch Security Systems B.V. Installation Note 2017.01 | 02 | F.01U.321.490

Bosch Security Systems B.V.
Torenallee 49
5617 BA Eindhoven
Netherlands
www.boschsecurity.com
© Bosch Security Systems B.V., 2017