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User Manual for Bosch LC4-UC24E Ceiling Loudspeaker Click to enlarge the picture
Contents of the user manual for the Bosch LC4-UC24E Ceiling Loudspeaker
- Product category: Installed Speakers Bosch
- Brand: Bosch
- Description and content of package
- Technical information and basic settings
- Frequently asked questions – FAQ
- Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
- Authorized service for Bosch Installed Speakers
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User manual for the Bosch LC4-UC24E Ceiling Loudspeaker contain basic instructions
that need to be followed during installation and operation.
Before starting your appliance, the user manual should be read through carefully.
Follow all the safety instructions and warnings, and be guided by the given recommendations.
User manual is an integral part of any Bosch product,
and if it is sold or transferred, they should be handed over jointly with the product.
Following the instructions for use is an essential prerequisite for protecting
health and property during use, as well as recognition of liability on the part of the manufacturer
for possible defects should you make a warranty claim. Download an official Bosch user manual in which you will find instructions on how to install, use, maintain and service your product.
And do not forget – unsuitable use of a Bosch product will considerably shorten its lifespan!
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Product description The 24W white LC4-UC24E Ceiling Loudspeaker from Bosch can be used for a wide variety of ceiling environments. They provide speech and music in indoor public address applications. The CosCone driver technology, used in this range, delivers outstanding sound quality from a small sized unit. It ensures a wide and equal spread of all octave frequencies and eliminates high-frequency beaming.
Fewer loudspeakers are needed to cover a given area, and the noticeable fading that can occur as a listener walks from one loudspeaker to another area is eliminated. It is a light and compact unit with an unobtrusive, neutral designed front grille.
The 24W Ceiling Loudspeaker range comes with the same wide opening angle, ensuring a wide and equal spread of the important frequency octaves for speech intelligibility and music clarity. The LC4 range is installation friendly. A cutting template is supplied with each unit, and the loudspeaker is secured in ceilings up to 2” (50mm) thick using 2 integral screw driven clamps.
Power tapping on both 70V and 100V allows selection of full-power, half-power, quarter-power, eight-power radiation, and 8 Ω. A selector at the front of the frame simplifies the required selection of the power setting. The loudspeaker grille, standard supplied, can be secured to the loudspeaker unit with a quick bayonet fitting after installation of the loudspeaker into the ceiling.
The LC4 range includes a back-box and metal fire-dome. The included back-box (LC4-CBB) protects the rear of the loudspeaker from dust, falling objects, makes the unit vermin proof, and also prevents sound traveling via the ceiling cavity to adjacent areas. The back-box is assembled with the loudspeaker by means of a snap-in construction and has knock-out holes for 2 grommets 0.4” (11.5mm) and for 2 cable glands 0.8” (20.5mm) aside and on the top.
You can easily install the individual loudspeakers as well as loudspeakers / fire-dome combinations. The metal fire-dome (LC4-MFD) mounting is fixed in the ceiling prior to the ceiling speaker mounting. The fire-dome is provided with a safety cord allowing the installer to temporarily hang the loudspeaker in the fire-dome, while connecting.
Both the loudspeaker and back-box have provision for mounting the line/supervision board (sold separately). The loudspeaker has a provision also for adding a capacitor in case the loudspeaker is used in systems with DC supervision. - Certifications and Approvals
- It is designed to withstand operating at the rated power for 100 hours in accordance with IEC 268-5 PHC (Power Handling Capacity) standards. Bosch has also developed the SAFE (Simulated Acoustical Feedback Exposure) test to demonstrate that the speakers can withstand 2 times their rated power for short durations.
This ensures extra reliability under extreme conditions, leading to great customer satisfaction, long operating life, and less chance of failure or performance deterioration. - General
- Innovative CosCone full range driver
Good speech and music reproduction
Unrivalled opening angle for all octave frequencies
Paintable grille
EN 54-24 and BS5839 compliant UPC: 800549627818 In the Box Bosch LC4-UC24E Ceiling Loudspeaker (24W, White) LC4-CBB Back-Box LC4-MFD Fire-Dome Ceiling Cut-Out Template Limited 3-Year Warranty Table of Contents
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Technical parametersBosch LC4-UC24E Specs | | | Maximum Power | 36 W | | Rated Power | PHC: 24 W, (24/12/6/3 W) | | Sound Pressure | Level: At 6 W / 1 W (1 kHz, 3.2' (1.0 m)): 101 dB / 87 dB (SPL) | | Frequency Range | Effective (-10 dB): 65 Hz to 20 kHz | | Opening | Angle: At 1 kHz / 4 kHz (-6 dB): 180° / 180° | | Input Voltage | Rated: 13.9 / 70 / 100 V | | Impedance | Rated: 8 / 208 / 417 Ω | | Connector | 4-way screw terminal block | | Sensitivity | Octave SPL 1 W/m:
125 Hz: 86.3
250 Hz: 83.3
500 Hz: 86.0
1000 Hz: 86.5
2000 Hz: 88.9
4000 Hz: : 88.3
8000 Hz: 89.3
Total octave SPL 1 W/1 m:
A-weighted: 85.6
Lin-weighted: 87.6
Total octave SPL Pmax/1 m:
A-weighted: 97.7
Lin-weighted: 100.4 Acoustical performance specified per octave. All measurements are done with a pink noise signal; the values are in dBSPL. | | Angle | Horizontal & Vertical
125 Hz: 180
250 Hz: 180
500 Hz: 180
1000 Hz: 180
2000 Hz: 180
4000 Hz: 180
8000 Hz: 128 | | | | Operating Temperature | -13 to +131°F (-25 to +55°C) | | Storage Temperature | -40 to +158°F (-40 to +70°C) | | Relative Humidity | <95% | | | | Compliance | According to EN 60065 | | Compliance | EVAC: According to BS 5839 part 8, EN 54-24 With LC4-CBB back-box or LC4-MFD fire-dome. | | Water and Dust Resistance | EVAC: According to EN60529 IP21 With LC4-CBB back-box or LC4-MFD fire-dome. | | Certification | Europe CE | | | | Material | Loudspeaker Unit: ABS (V 0)
Front Grille: Steel mesh with ABS (V 0) rim | | Diameter | 7.87" (200.00 mm) | | Mounting | Cut-Out: 6.38" (162.00 mm) | | Ceiling Thickness | Minimum to Maximum: 0.19 to 1.97" (5.00 to 50.00 mm) | | Maximum Depth | 2.75" (70.00 mm) | | Weight | 2.18 lb (990.00 kg) | | | | Diameter | 6.29" (160.00 mm) | | Maximum Depth | 3.07" (78.00 mm) | | Material | ABS (V 0) | | Weight | 0.35 lb (160.00 kg) | | | | Diameter | 7.75 / 6.88" (197.00 / 175.00 mm) | | Maximum Depth | 6.14" (156.00 mm) | | Mounting | Cut‑Out: 7.00" (178.00 mm) | | Ceiling Thickness | Minimum to Maximum: 0.19 to 1.97" (5.00 to 50.00 mm) | | Material | Steel | | Weight | 2.20 lb (998.00 kg) | | | | Package Weight | 3.0 lb | | Box Dimensions (LxWxH) | 9.055 x 9.055 x 4.331" |
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