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  • BOSCH LB1 - UM20E Premium Sound Cabinet Loudspeaker White / Black

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BOSCH LB1 - UM20E Premium Sound Cabinet Loudspeaker White / Black

Premium Sound Cabinet Loudspeaker - UM20E Product Features High-fidelity music and speech reproduction Supplied with adjustable wall mounting bracket Self-restoring overload...

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Tags: Cabinet Speaker, Indoor and Outdoor Speaker, Loudspeaker, Speaker

Collections: All Products, BOSCH, Public Address

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Premium Sound Cabinet Loudspeaker - UM20E

Product Features
  • High-fidelity music and speech reproduction
  • Supplied with adjustable wall mounting bracket
  • Self-restoring overload protection
  • Provision for internal mounting of the optional line / loudspeaker supervision board
  • EN 54-24 certified

Technical Specification 

Product LB1‑UM20E‑L /B
Description Premium‑sound Cabinet Loudspeaker
Maximum power 30W
Rated power (PHC) 20W
Power tapping 20 / 10 / 5 / 2.5 W
Sound pressure level at rated power / 1 W (1 kHz, 1 m) 101 dB / 88 dB (SPL)
Effective frequency range (-10 dB) 87 dB / 74 dB (SPL)
Opening angle  1 kHz / 4 kHz (-6 dB)
horizontal 174° / 136°
vertical 127° / 141°


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