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Bosch range of horn loudspeakers

Bosch horn loudspeakers provide excellent sound distribution for a wide range of outdoor applications including sporting events, swimming pools, exhibitions and factory grounds and warehouses.

>> Speech horn loudspeakers - up to 45W
>> Speech horn loudspeakers - up to 52.5W
>>
Professional horn loudspeakers
>> Horn loudspeaker driver units

>> Marine horn loudspeaker
>> Ex-hazardous area horn loudspeaker
>>
Music horn loudspeaker

Bosch horn loudspeaker range
 
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  • High efficiency drivers
  • Up to 45 W (maximum power)
  • Wide opening angle
  • Excellent speech reproduction
  • Simple power setting
  • Water and dust protected to IP65
  • Versatile mounting bracket
  • Comply with international installation and safety regulations
  • LBC 3481/12, LBC 3491/12,
    LBC 3492/12, LBC 3493/12
Bosch LBC 34xx/12 loudspeakers
 
LBC 34xx/12 loudspeakers
   
Bosch speech horn loudspeakers - LBC 3481/12, LBC 3491/12,
LBC 3492/12, LBC 3493/12 - datasheet
Bosch speech horn loudspeakers - installation guide
   

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 3481/12 is a circular horn loudspeaker with 15 W (max power) made from ABS.
The LBC 3491/12 is a rectangular model with 15 W (max power) and is made from ABS.
The 30 W (max power) LBC 3492/12 is a circular loudspeaker with a large horn measuring 354mm in diameter. It is made from a combination of aluminum with ABS for optimum strength and low weight. The edge of the horn is covered with a PVC profile for protection against impact damage.
The 45 W (max power) LBC 3493/12 is a circular loudspeaker with a large horn measuring 400mm in diameter. It is made from a combination of aluminum with ABS for optimum strength and low weight. The edge of the horn is covered with PVC for protection against impact damage.

All four models are for direct connection to a 100 V line output and are finished in light grey (RAL 7035). The horns are water and dust protected.

The horn loudspeakers include a 100 V transformer with taps on the primary winding to allow different power settings. Nominal full-power, half-power or quarter-power radiation (i.e. in 3 dB steps) can easily be selected by connecting the amplifier output to the appropriate tap. A two meter long four-core cable is fitted to the horns. Each core is a different color, and is connected to one of the primary taps on the transformer.

The horn loudspeakers are supplied complete with sturdy adjustable mounting brackets, allowing the sound beam to be accurately directed.

 
Max Power Rated
Power
Sound Pressure Freq
Range
Water
Dust
Horn
shape
LBC 3481/12 15Watt 10Watt 113dB 500Hz-7kHz IP65 Round
LBC 3491/12 15Watt 10Watt 118dB 480Hz-5.5kHz IP65 Rectangular
LBC 3492/12 30Watt 20Watt 123dB 380Hz-5.5kHz IP65 Round
LBC 3493/12 45Watt 30Watt 126dB 380Hz-5kHz IP65 Round
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  • High efficiency drivers
  • Up to 52.5 W (max. power)
  • Wide opening angle
  • Excellent speech reproduction
  • Simple power setting
  • Water and dust protected to IP65
  • Versatile mounting bracket
  • Comply with international installation and safety regulations
  • BS 5839 part 8 compliant
  • LBC 3482/00 and LBC 3483/0
Bosch LBC 3482/00 & LBC 3483/00
 
LBC 3482/00 & LBC 3483/00
horn loudspeakers
   
Bosch speech horn loudspeakers LBC 3482/00 & LBC 3483/00 - datasheet
Bosch speech horn loudspeakers LBC 3482/00 & LBC 3483/00 - installation guide
   

The LBC 3482/00 & 3483/00 are high-efficiency aluminum horn loudspeakers. They have provision for cable loop through connection and mounting of line or loudspeaker supervision boards. Horn loudspeakers are suitable for use in voice alarm systems. Horns and drivers can also be ordered separately.

The 37.5 W (max. power) LBC 3482/00 and the 52.5 W (max power) LBC 3483/00 are both circular horn loudspeakers, measuring 355 mm and 490 mm in diameter respectively. They are made from aluminum. The edges of the horns of the LBC 3482/00 and LBC3483/00 are covered with a PVC profile for protection against impact damage. All of models are finished in light grey (RAL 7035). The horns are water and dust protected.

The rear cover on the horn is made from self-extinguishing 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).

The horns have provision for mounting the optional line/loudspeaker supervision board.

These integrated horns are also available as separate horn and driver, allowing to install any combination of horn and driver. See order information for the type numbers

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  • Excellent acoustic properties
  • Choice of driver units
  • Water and dust protected to IP65
  • Versatile mounting bracket
  • UV light resistant
  • Self-extinguishing to UL 94 Vo
  • Horns LBC 3403/14, LBC3404/14, LBC3405/14,
    LBC 3406/14 with driver units LBN 9000/00,
    LBN 9001/00, LBN 9003/00


  • Three different driver units
  • 15W, 30W and 50W rated power versions, max power 22.5W, 45W and 75W
Bosch LBC 340x/15
 
LBC 340x/15
Horn without driver unit
Bosch Professional Horns Loudspeakers
LBC 3403/1 LBC 3404/15 LBC 3405/15, LBC 3406/15 - datasheet
Bosch Professional Horns Loudspeakers
LBC 3403/1 LBC 3404/15 LBC 3405/15, LBC 3406/15 - installation guide
   

The Bosch professional horn loudspeaker system allows a range of different driver units to be installed into the various horns. The system includes four horns, three circular types with aperture diameters of 255, 380 and 510 mm and a rectangular model with an opening measuring 390 x 235 mm.

The drivers (ordered separately) are mounted inside the horn, and the connection cable is fed out through a cable gland in the cover plate. This makes the loudspeaker horn/driver unit splash-waterproof, and therefore ideal for outdoor sound reinforcement applications. Three driver units are available, a 15 W, 30 W and a 50 W type for 100 V lines only. See separate datasheet.

In the construction of the horns, maximum use has been made of standard parts in a modular concept. The screw thread for securing the driver units is a standard 1 3/8-inch thread (1 3/8"- 18 UNEF-2A). The shape of the cover plate gives the horns a distinctive and easily recognizable style.

The cover plates have provision on their inside face for mounting the optional line/loudspeaker supervision board. Note: The 50 W driver cannot be used in horns where the line/loudspeaker supervision board is installed.

They are made from flame retardant high-impact Polystyrene (PS) material combining strength with low weight. This rugged material is resistant to ultraviolet light, aggressive environments and most industrial chemicals. The horns (incl. brackets) are finished in light grey. The sturdy steel mounting bracket allows easy mounting and directing of the horn.

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  • High efficiency
  • 15 W, 30 W and 50 W versions
  • 1 3/8” screw thread
  • Simple power setting
  • Complies with international installation and safety regulations
  • LBN 9000/00, LBN 9001/00
    and LBN 9003/00 Driver Units
Bosch LBC 3482/00 & LBC 3483/00
 
LBC 3482/00 & LBC 3483/00
driver units
   
Bosch LBN 9000/00, LBN 9001/00 & LBN 9003/00 driver units - datasheet
   

The Bosch professional horn loudspeaker system comprises a range of three high-efficiency driver units that can be installed into one of the compatible circular and rectangular horns (supplied separately without drivers). A standard 1 3/8" screw thread is used for mounting the drivers into horns. All models are treated against corrosion.

The LBN 9000/00 is a 15 W driver unit and the LBN 9001/00 is a 30 W driver unit. Connections to 100 V lines are made using push-on spade terminals.

The LBN 9003/00 is a more powerful 50W model. Connections to 100 V lines are made using screw terminals.
Note: The 50 W driver cannot be used in horns where the line/loudspeaker supervision board is installed.

All driver units include a matching transformer to allow power tapping. See circuit diagram overleaf. This feature also allows impedance matching for different amplifier types.

A range of horns is available for these driver units to allow tailor-made solutions for a variety of sound reinforcement applications. Three circular types (LBC 3403, LBC 3404 and LBC 3405 with diameters of 255, 380 and 510 mm respectively) and one rectangular type (LBC 3406, measuring 380 x 205 mm) are available. They are made from flame retardant, high-impact Polystyrene (PS) material for high strength and low weight, and are finished in light grey. A sturdy steel mounted bracket is also supplied. See separate datasheet.

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  • Suable for marine and industrial applications
  • Glass reinforced polyester with strong, fire-retardant qualities
  • Reduced maintenance costs
  • Corrosion and chemical resistant
  • Water-and dust-protected to class IP66 and IP67
  • Complies with international installation and safety regulations

 

Bosch LBC 3428/00 marine horn loudspeaker
LBC 3428/00 marine horn loudspeaker
Bosch marine horn loudspeaker LBC 3428/00 - datasheet
Bosch marine horn loudspeaker LBC 3428/00 - installation guide
 

The Bosch LBC 3428/00 horn loudspeaker is specifically designed for excellent sound reproduction in marine applications and other industrial environments. It is rugged, water- and dust-protected, and resistant to the corrosive effects of sea water and most industrial atmospheres. Suitable for both stationary and mobile systems, its strength and good acoustic performance also makes it ideal for general commercial and industrial applications.

The horn loudspeaker is made from a UV-stable, glass-reinforced polyester (GRP). This strong, fire-resistant and corrosion- resistant material is very reliable and reduces maintenance costs. GRP is also chemical resistant and thermally stable, making it ideal for even the harshest environments. The horns are weather-proof, and incorporate stainless steel mounting brackets with cover screws to increase corrosion resistance. They are fitted with a dual 20 mm gland entries (one gland is supplied as standard) to facilitate loop-through connection.

 
  Max Power Rated Power Sound Pressure Freq
Range
Water
Dust
Horn
LBC 3428/00 22Watt 15Watt 114dB 380Hz-5.5kHz IP66 & IP67 Round
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  • ATEX - approved
  • BASEEFA-certified
  • CENELEC-approved
  • Glass reinforced polyester with strong, fire retardant properties
  • Reduced maintenance costs
  • Corrosion and chemical resistance
  • Water- and dust protected to class IP66 & IP67
  • Complies with international installation and safety regulations

 

Bosch LBC 3437/00 & LBC 3438/00
LBC 3437/00 & LBC 3438/00
horn loudspeakers
Bosch hazardous area horns LBC 3437/00, LBC 3438/00 - datasheet
Bosch hazardous area horns LBC 3437/00, LBC 3438/00 - install guide
 

The Bosch LBC 3437/00 and LBC 3438/00 Horn Loudspeakers are specifically designed and approved for installations where explosive gas-air mixtures are likely to be present. They are suitable for use in all gas groups including hydrogen.

The LBC 3437/00 has a power rating of 15 W, while the LBC 438/00 offers 25 W.

The flame paths, flare and body of both loudspeakers are constructed from a UV stable glass reinforced polyester (GRP). This strong, fire- and corrosion resistant material offers greater reliability and reduced maintenance costs. GRP is also chemical resistant and thermally stable, making it ideal for even the harshest environments. The horns are weather proof, and incorporate stainless steel mounting brackets and captive cover screws, and a stainless steel sinter, to increase their resistance to corrosion. They are supplied with an EExdIIC gland as standard.

 
Max Power Rated
Power
Sound Pressure Freq
Range
Water
Dust
Horn
LBC 3437/00 22Watt 15Watt 112dB 420Hz-3.5kHz IP66 & IP67 Round
LBC 3438/00 37Watt 25Watt 114dB 420Hz-3.5kHz IP66 & IP67 Round
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  • High quality music horn for excellent speech and music reproduction
  • Two-way system
  • High sensitivity
  • Wide opening angle
  • Simple power setting
  • Water and dust protected to IP65
  • Attractive ABS housing
  • Two way system
  • Complies to International installation and safety regulations
  • LBC 3700/00
Bosch LBC 3700/00
LBC 3700/00
music horn loudspeaker

The Bosch LBC 3700/00 Horn Loudspeaker features an extended frequency range and high sensitivity which makes it ideal for high quality speech and music reproduction. The wide opening angle ensures even sound distribution, so fewer horns are needed to cover a given area.

The rectangular horn features a unique combination of a re-entrant horn with two transducers, one for low- and the other for high frequencies, resulting in breathtaking sound clarity.

The horn is weather protected and can be used in areas with high humidity. It is therefore suitable for outdoor applications such as swimming pools, sports stadiums, leisure parks, cruise ships, schools and train stations, as well as for indoor public address. Finished in light grey RAL 7035 color, the ABS horn is both stylish and lightweight

 
  Max Power Rated Power Sound Pressure Freq
Range
Water
Dust
Horn
shape
LBC 370000 45Watt 30Watt 112dB 125Hz-20kHz IP65 Rectangular
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