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Bosch lbc3492 / 12 horn speaker, 20W, round
Business type: lbc3492 / 12
Product No.: f.01u.506.042


Efficient drive unit
Wide open angle
Excellent voice reproduction
Simple power setting
The waterproof and dustproof grade meets IP 65 standard
Universal mounting bracket
Comply with international installation and safety regulations
F. 01u.506.042 lbc3492/12 horn speaker, 20W, round Taiwan 365 730
The Bosch high-efficiency horn speaker provides exceptional voice playback and sound transmission effects, suitable for a variety of outdoor applications. They are ideal for applications such as stadiums, parks, exhibitions, factories and swimming pools
System overview
The LBC 3481 / 12 is a round horn speaker, while the LBC 3491 / 12 is a rectangular horn speaker. Both loudspeakers have a power of 10 W and are made of ABS material.
The LBC 3492 / 12 is a 20 W round horn speaker with a large horn diameter of 354 mm. It is made of aluminum material and ABS material, not only high strength but also light. The horn edge is covered with PVC profiles to prevent damage from impact. The LBC 3493 / 12 is a 30 W round horn speaker with a large horn diameter of 400 mm. It is made of aluminum material and ABS material, not only high strength but also light. The horn edge is covered with PVC profiles to prevent damage from impact.
basic function
All four models can be directly connected to the 100 V line output, and the coating is light gray (RAL 7035). These horn loudspeakers are waterproof and dustproof. Horn speakers come with a 100 V transformer and jumper connectors on the primary winding can be used for different power settings. By connecting the amplifier output to the appropriate connector, the user can easily select rated full power, half power or quarter power (with an amplitude of 3 dB). The horn speaker is equipped with a 2m long four core cable. Each core has a different color and is connected to one of the taps on the transformer.

Efficient drive unit

Power up to 45 w (maximum power)
Wide open angle
Excellent voice reproduction
Simple power setting
The waterproof and dustproof grade meets IP 65 standard
Universal mounting bracket
Comply with international installation and safety regulations

The horn speaker is equipped with a solid adjustable steel mounting bracket to accurately orient the sound beam.

Certificate and recognition
All Bosch loudspeakers comply with IEC 268-5 power handling capacity (PHC) standard and can operate continuously for 100 hours at rated power. In addition, Bosch has conducted simulated acoustic feedback exposure (SAFE) tests to ensure that they can withstand twice the rated power in a short period of time. This ensures high reliability of loudspeakers in extreme conditions, improves customer satisfaction, extends service life, and significantly reduces the probability of failure or performance degradation.
Safety in accordance with en 60065, flame retardant in accordance with UL 94 V0, waterproof and dustproof in accordance with en 60529-ip65
Regional certification European CE declaration of conformity CE
Maximum power 52.5 w
Rated power 35 / 17.5/8.75w
127 dB / 112 dB at 35W / 1W (1kHz, 1M)
Sound pressure level 115 dB / 100 dB at 35W / 1W (1kHz, 4m)
Effective frequency range (- 5 Hz to 10 Hz)
Opening angle 50 ° / 25 ° at 1 kHz / 4 kHz (- 6 dB)
Rated voltage rated impedance 100 V
35 W 285 Ohm
17.5 W 571 Ohm
8.75 W 1142 Ohm
Connector screw terminal box
Dimensions (L x Max d) 499 x 490 mm (20 x 19.6 in)
Weight 4.5 kg (9.9 lb)
Color light grey (RAL 7035)
Cable diameter 6 mm to 12 mm (0.24 inch to 0.47 inch)
Operating temperature - 25 ° C to + 55 ° C (- 13 ° f to + 131 ° f)
Storage and transportation temperature - 40 ° C to + 70 ° C (- 40 ° f to + 158 ° f)
Relative humidity < 95%
Lbc3472 / 00 horn actuator, 25W
Horn driver, 25 W, for use with lbc3478 / 00 (14 inches) or lbc3479 / 00 (20 inches) horns, light grey ral 7035.
Business type: lbc3472 / 00
Product No.: f.01u.523.209
Lbc3473 / 00 horn actuator, 35W
Horn driver, 35 W, for use with lbc3478 / 00 (14 inches) or lbc3479 / 00 (20 inches) horns, light grey ral 7035.
Business type: lbc3473 / 00
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Lbc3474 / 00 horn actuator assembly, 50W
Horn driver, 50 W, for use with lbc3478 / 00 (14 inches) or lbc3479 / 00 (20 inches) horns, light grey ral 7035.
Business type: lbc3474 / 00
Product No.: f.01u.012.803
Lbc3482 / 00 horn speaker, 25W
Horn, 14 inch, no exciter, aluminum, for use with horn loudspeakers lbc3472 / 00 (25 W), lbc3473 / 00 (35 W) and lbc3474 / 00 (50 W), light grey ral 7035.
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Lbc3479 / 00 horn, 20 ", assembly kit
Horn, 20 inch, no exciter, aluminum, for use with horn loudspeakers lbc3472 / 00 (25 W), lbc3473 / 00 (35 W) and lbc3474 / 00 (50 W), light grey ral 7035.
Business type: lbc3479 / 00
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Product variables
Lbc3481 / 12 horn speaker, 10W, 6“
Horn speaker, 10 W, round, ABS material, waterproof and dustproof, IP65 standard, fixed 2m long, 4-core connecting cable, light gray ral 7035.
Business type: lbc3481 / 12
Product No.: f.01u.506.040
Lbc3491 / 12 horn speaker, 10W, 6x10“
Horn speaker, 10 W, rectangular, ABS material, waterproof and dustproof, IP65 standard

Sales telephone (same number of wechat): 13428785305 QQ: 2461903042