Bosch LBC3484-00-US Specsheet

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

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.

u Water-and dust protected to IP 65

u BS 5839‑8 and EN 60849 compliant

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.

mm

in

37

1.45

204.0

8.0

102.0

4.0

51.0

2.0

37.0

1.45

18.5

0.73

10.8 x 3.0

0.43 x 0.12

51.0

2.0

3.0

0.12

mm

in

0

1

1/2

16 Ω

1/4

1k

20k

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.

Circuit diagram

Frequency response

Dimensions in mm (in)

Bracket dimensions in mm (in)

Polar diagram (measured in pink noise)

Octave band sensitivity *

Octave SPL

1W/1m

Total octave
SPL
1W/1m

Total octave
SPL
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

3 | LBC 3484/00 Horn Loudspeaker

Octave band opening angles

Horizontal Vertical

125 Hz - -

250 Hz 179 179

500 Hz 93 93

1000 Hz 55 55

2000 Hz 37 37

4000 Hz 26 26

8000 Hz 15 15

Acoustical performance specified per octave
* (all measurements are done with a pink noise signal;

the valuals are in dBSPL)

Parts included

Quantity Components

1 LBC 3484/00 Horn Loudspeaker

1 PG 13.5 cable gland (fitted)

Technical specifications

Environmental

Operating temperature -25 ºC to +55 ºC (-13 ºF to

+131 ºF)

Storage temperature -40 ºC to +70 ºC (-40 ºF to

+158 ºF)

Relative humidity <95%

Ordering information

LBC 3484/00 Horn Loudspeaker

Horn loudspeaker 50 W, circular 20", aluminum/ABS
material, U-bracket mounting, water and dust
protected IP65, light gray RAL 7035.

Order number LBC3484/00

Accessories

LBC 3472/00 Driver Unit

Horn driver 25 W, for use with LBC3478/00 (14") or
LBC3479/00 (20") horns, light gray RAL 7035.

Order number LBC 3472/00

LBC 3473/00 Driver Unit

Horn driver 35 W, for use with LBC3478/00 (14") or
LBC3479/00 (20") horns, light gray RAL 7035.

Order number LBC 3473/00

Electrical *

Maximum power 75 W

Rated power 50 / 25 / 12.5 W

Sound pressure level
at 50 W / 1 W (1 kHz, 1 m)

Effective frequency range (-10
dB)

Opening angle
at 1 kHz/4 kHz (-6 dB)

Rated voltage 100 V

Rated impedance 200 ohm

Connector Screw terminal block

127 dB / 110 dB (SPL)

350 Hz to 4 kHz

60° / 28°

Mechanical

Dimensions (L x Dmax) 499 x 490 mm (20 x 19.6 in)

Weight 6 kg (13.22 lb)

Color Light grey (RAL 7035)

Cable diameter 6 mm to 12 mm

(0.24 in to 0.47 in)

LBC 3474/00 Driver Unit

Horn driver 50 W, for use with LBC3478/00 (14") or
LBC3479/00 (20") horns, light gray RAL 7035.

Order number LBC3474/00

LBC 3478/00 Horn, 14" without Driver

Horn 14” without driver, aluminum material, for use
with horn drivers LBC3472/00 (25 W), LBC3473/00
(35 W), and LBC3474/00 (50 W), light gray RAL 7035.

Order number LBC 3478/00

LBC 3479/00 Horn, 20" without Driver

Horn 20” without driver, aluminum material, for use
with horn drivers LBC3472/00 (25 W), LBC3473/00
(35 W), and LBC3474/00 (50 W), light gray RAL 7035.

Order number LBC 3479/00

4 | LBC 3484/00 Horn Loudspeaker

Represented by:

Americas: Europe, Middle East, Africa: Asia-Pacific: China: America Latina:

Bosch Security Systems, Inc.
12000 Portland Avenue South
Burnsville MN 55337, USA
Phone: [phone]
Fax: [phone]
[e-mail]
www.boschsecurity.com

Bosch Security Systems B.V.
P.O. Box 80002
5617 BA Eindhoven, The Netherlands
Phone: + 31 40 2577 284
Fax: [phone]
[e-mail]
www.boschsecurity.com

Robert Bosch (SEA) Pte Ltd, Security
Systems
11 Bishan Street 21
Singapore 573943
Phone: [phone]
Fax: [phone]
[e-mail]
www.boschsecurity.asia

Bosch (Shanghai) Security Systems Ltd.
201 Building, No. 333 Fuquan Road
North IBP
Changning District, Shanghai
200335 China
Phone [phone]
Fax: [phone]
www.boschsecurity.com.cn

Robert Bosch Ltda Security Systems Division
Via Anhanguera, Km 98
CEP 13065-900
Campinas, Sao Paulo, Brazil
Phone: [phone]
Fax: [phone]
[e-mail]
www.boschsecurity.com

© Bosch Security Systems 2015 | Data subject to change without notice
1934011403 | en, V5, 01. Jul 2015