Communications Systems | LS1 UC20E 1 Pendant Sphere Loudspeaker
LS1 UC20E 1 Pendant Sphere Loudspeaker
www.boschsecurity.com
u Superb speech and music reproduction
u 5 m connection cable
u Provision for optional safety cord
u Water and dust protected to IP 65
u EN 54 24 certified
Sound spheres are pendant sound projectors designed to be suspended from the ceiling by their connecting cables. Their excellent sound spread makes them ideal for use in buildings with high ceilings, such as hypermarkets and superstores.
The LS1 UC20E 1 is a powerful 20 W pendant sphere loudspeaker, intended for high quality speech and music reproduction. The state of the art design is matched to both modern and traditional style environments. The loudspeaker is suitable for use in voice evacuation systems.
Functions
Voice Alarm Loudspeaker
Voice alarm loudspeakers are specifically designed for use in buildings where performance of systems for verbal communication announcements is governed by regulations. The LS1 UC20E 1 is designed for use in voice alarm systems and is EN 54 24 certified and compliant with BS 5839 8 and EN 60849.
The loudspeaker has built in protection to ensure that, in the event of a fire, damage to the loudspeaker does not result in failure of the circuit to which it is connected. In this way, system integrity is maintained; ensuring loudspeakers in other areas can still be used
to inform people of the situation. The loudspeaker is supplied with a ceramic terminal block and thermal fuse.
Superb Sound Quality
The use of a high quality driver has resulted in a very natural sound reproduction with excellent bass response.
Certifications and approvals
All Bosch loudspeakers are designed to withstand operating at their rated power for 100 continuous hours in accordance with IEC 268 5 Power Handling Capacity (PHC) standards. Bosch has also developed the Simulated Acoustical Feedback Exposure (SAFE) test to demonstrate that they can withstand two times their rated power for short durations. This ensures improved reliability under extreme conditions, leading to higher customer satisfaction, longer operating life, and lessons the chance of failure or performance deterioration.
2 | LS1 UC20E 1 Pendant Sphere Loudspeaker
Safety Aspects
In common with all Bosch products, care is taken to meet high safety standards. All ABS parts are selfextinguishing (according to UL 94 V 0). This sound projector complies with the relevant safety and installation regulations of EN 60065.
Water and dust protection |
according to IEC 60529, IP 65 |
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Emergency |
according to EN 54 24 / BS 5839 8 / |
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EN 60849 |
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Region Certification
Europe CE
CE DOP
CPD
Installation/configuration notes
Mounting
The loudspeaker is suspended from the ceiling via its five meter, five core connecting cable, which is easy to shorten for the desired height. For optional safety, a steel safety cord can be attached.
Power Setting
The loudspeaker is supplied with a five meter colorcoded, five core connecting cable with each color connected to a different primary tap on the 100 V matching transformer. This allows nominal full power, half power, quarter power or eighth power radiation to be selected (in 3 dB steps).
(7.28) |
(2.20) |
Ø 185 |
56 |
|
Ø3 X 6 (0.24) |
(10.00) |
|
254 |
|
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|
|
|
|
(0.55) |
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|
14 |
|
(1.61) |
|
|
41 |
|
(1.61) |
|
(0.63) |
1.4 |
|
16 |
Dimensions in mm / (in)
0
20W
10W
5W |
8 |
|
2.5W
Circuit diagram
Frequency response
Polar diagram (measured with pink noise)
Octave band sensitivity*
|
Octave SPL |
Total octave |
Total octave |
|
1W/1m |
SPL |
SPL |
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1W/1m |
Pmax/1m |
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|
|
|
125 Hz |
84.1 |
- |
- |
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|
|
|
250 Hz |
84.7 |
- |
- |
|
|
|
|
500 Hz |
84.3 |
- |
- |
|
|
|
|
1000 Hz |
85.3 |
- |
- |
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|
|
|
2000 Hz |
88.3 |
- |
- |
|
|
|
|
4000 Hz |
90.7 |
- |
- |
|
|
|
|
8000 Hz |
90.7 |
- |
- |
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|
|
|
A-weighted |
- |
87.4 |
99.3 |
|
|
|
|
Lin-weighted |
- |
89.4 |
101.0 |
|
|
|
|
|
|
|
|
Octave band opening angles |
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Horizontal |
Vertical |
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125 Hz |
360 |
360 |
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|
|
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250 Hz |
360 |
360 |
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|
|
|
|
500 Hz |
360 |
360 |
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