Communications Systems | LBC 3484/00 Horn Loudspeaker
LBC 3484/00 Horn Loudspeaker
www.boschsecurity.com
u High efficiency driver
u Excellent speech reproduction
u Provision for inside mounting of the optional line/ loudspeaker supervision board
u Water-and dust protected to IP 65
u BS 5839 8 and EN 60849 compliant
Bosch high-efficiency horn loudspeakers provide excellent speech reproduction and sound distribution for a wide scope of outdoor applications. They are ideal for sports grounds, parks, exhibitions, factories and swimming pools.
The LBC 3484/00 is a circular 50 W horn loudspeaker, measuring 490 mm (19.6 in) in diameter. They are made from aluminum. The edges of the horns are covered with a PVC profile for protection against impact damage. They are light grey (RAL 7035), and are water and dust protected.
Voice alarm loudspeaker
The LBC 3484/00 is designed for use in voice alarm systems and is compliant with emergency standards. The Horn 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 Horn loudspeaker has a ceramic terminal block, thermal fuse and heat resistant, high-temperature wiring.
They have provision for inside mounting the optional line/loudspeaker supervision boards.
Functions
The rear cover on the horn is made from selfextinguishing ABS (acc. to class UL 94 V0). The connection cable is fed out through a cable gland (PG 13.5) in rear cover. For loop through connection, the rear cover is fitted with a second hole (covered as standard supplied).
These integrated horns are also available as separate horn and driver, allowing installing any combination of horn and driver. See order information for the type numbers.
Certifications and approvals
All Bosch loudspeakers are designed to withstand operating at their rated power for 100 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 extra reliability under extreme conditions, leading to higher customer satisfaction, longer operation life, and much less chance of failure or performance deterioration.
2 | LBC 3484/00 Horn Loudspeaker
Safety |
acc. to EN 60065 |
Water and dust protection |
acc. to IEC 60529, IP 65 |
Emergency |
acc. to BS 5839 8 / EN 60849 |
Wind force |
acc. to NEN 6702: 2007 + A1: 2008, |
|
Bft11 |
Region Certification
Europe CE
Installation/configuration notes
Simple Power Setting
The horn has a three-way terminal block with screw connection (including earth). Three primary taps are provided on the matching transformer to allow selection of nominal full-power, half-power or quarterpower radiation (in 3 dB steps).
Mounting
The horn loudspeakers are supplied complete with sturdy adjustable steel mounting brackets, allowing the sound beam to be accurately directed.
37 |
1.45 |
MM
IN
Dimensions in mm (in)
204.0
8.0
102.0
4.0
51.0 |
|
51.0 |
|
3.0 |
|
|
|
|
|
||
2.0 |
|
2.0 |
|
0.12 |
|
|
|
|
|
||
|
|
|
|
|
|
37.0 |
18.5 1.45 |
0.73 |
10.8 X 3.0 |
MM |
|
|
|
IN |
0.43 X 0.12 |
||
Bracket dimensions in mm (in)
0
1
16 •
1/2
1/4
Circuit diagram
1K |
20K |
Frequency response
Polar diagram (measured in pink noise)
Octave band sensitivity *
|
Octave SPL |
Total octave |
Total octave |
|
1W/1m |
SPL |
SPL |
|
|
1W/1m |
Pmax/1m |
|
|
|
|
125 Hz |
84.3 |
- |
- |
|
|
|
|
250 Hz |
99.0 |
- |
- |
|
|
|
|
500 Hz |
105.2 |
- |
- |
|
|
|
|
1000 Hz |
111.0 |
- |
- |
|
|
|
|
2000 Hz |
106.2 |
|
|
|
|
|
|
4000 Hz |
99.2 |
- |
- |
|
|
|
|
8000 Hz |
91.2 |
- |
- |
|
|
|
|
A-weighted |
- |
103.3 |
117.7 |
|
|
|
|
Lin-weighted |
- |
103.5 |
116.3 |
|
|
|
|
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