BOSCH LC20-PC60G6-6 Premium Ceiling Speaker Installation Guide

: June 13, 2024
: Bosch

Table of Contents

Safety
Welcome
System overview
Installation
Technical data
References
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Download This Manual (PDF format)

BOSCH LC20-PC60G6-6 Premium Ceiling Speaker Installation Guide

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.

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

System overview

Packing list

Figure 3.1: Components in kit

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

Product feature identification

Figure 3.2: Bottom and top of the ceiling speaker

Dimensions

LC20-PC60G6-6 Dimensions
LC20-PC60G6-8 Dimensions

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

Horizontal and vertical polar response

LC20-PC60G6-6 Polar Plots (1/3 Octave):
LC20-PC60G6-8 Polar Plots (1/3 Octave):

Installation

**Figure 4.1: Trace cutout template

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**Figure 4.2: Cut hole

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**Figure 4.3: Secure rails to C-Ring

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**Figure 4.4: Wiring – ground point

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**Figure 4.5: Wiring – flex conduit

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**Figure 4.6: Wiring – solid conduit

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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.

Figure 4.7: Attach auxiliary support line

**Figure 4.8: Install the speaker into the ceiling

Figure 4.9: Tighten mounting tabs

Figure 4.10: Tap selector

Figure 4.11: Adjust tap selector

Figure 4.12: Insert grille tether

Figure 4.13: Attach the grille

Figure 4.14: Installation complete

Figure 4.15: Wiring – ground point

Figure 4.16: Wiring – flex conduit

Figure 4.17: Wiring – solid conduit

**

Technical data

| LC20-PC60G6-6| LC20-PC60G6-8
---|---|---
Frequency Range (-10 dB):| 50 Hz – 20 kHz| 40 Hz – 20 kHz
Coverage (Conical):| 100°| 120°
Power Handling:| 200 W Program, 100 W Pink Noise
Sensitivity (SPL 1 W/1 m):| 87 dB| 88 dB
Max Calculated SPL:| 107 dB Avg, 113 dB Peak| 108 dB Avg, 114 dB Peak
Impedance:| 10 ohms
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 ohm100V: 60W, 30W, 15W, 8 ohm
Connectors:| Removable locking 4-Pin (Phoenix) 2.5 mm (12 AWG) max wire size
Enclosure:| ABS Plastic (UL94V-0) Baffle, steel back can
Grille:| Color matched steel grille with fabric
Dimensions (H x Dia):| 260 mm x 280 mm (10.4 in x 11.0 in)| 324 mm x 327 mm (10.4 in x 11.0 in)
Cutout Size:| 248 mm (9.76 in)| 294.3 mm (11.59 in)
Net Weight:(each)| 7.0 kg (15.4 lb)| 8.0 kg (17.6 lb)
Shipping Weight:(pair)| 16.83 kg (37.1 lb)| 20.23 kg (44.6 lb)
Support Hardware:| C Ring, Tile Bridge
Approvals:| UL1480, 2043; CE