Bosch LB1-UM20E-L Premium-Sound Cabinet Loudspeaker Range (20W, White)

Bosch LB1-UM20E-L Premium-Sound Cabinet Loudspeaker Range (20W, White)

Bosch LB1-UM20E-L Premium-Sound Cabinet Loudspeaker Range (20W, White)

B&H # BOLB1UM20EL MFR # F.01U.076.929
Bosch LB1-UM20E-L Premium-Sound Cabinet Loudspeaker Range (20W, White)

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Product Highlights

  • Metal Housing
  • For Indoor and Outdoor Use
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  • 1Description

The 20W white LB1-UM20E-L Premium-Sound Cabinet Loudspeaker Range from Bosch is intended for clear reproduction of speech, foreground, and background music to be used in general indoor and outdoor applications. The range has a 20 W power handling capacity. The enclosures are made from aluminum with ABS top and bottom covers.

The typical applications are theme bars, music restaurants, theme parks, retail outlets, audio visual, boardrooms and offices, exhibition areas and presentation environments, and fitness centers. Its sound reproduction capability is attributed to the use of high-quality driver components and crossover network design.

A self-restoring passive element protects the high-frequency driver against incidental overload. A 3-way ceramic terminal block with screw connections suitable for loop-through wiring is located in the compartment, at the base of the unit. An easy-to-install, sturdy wall mounting bracket is standard supplied. The same bracket can be used in combination with the universal floor stand LBC 1259/00 for temporary installations.

It is supplied with a built-in 70 / 100 V transformer with taps on the primary winding for full-power, half-power, quarter-power, and one-eighth power radiation. These taps are connected to a rotary vari-tap switch located in the compartment at the base of the enclosure, to allow simple output power setting. A low ohmic connection is also provided on the vari-tap switch.

Voice Alarm
This Voice alarm loudspeaker is specifically designed for use in buildings, where the performance of Public Address systems is subject to official regulations. It is designed for voice alarm systems, and is EN 54-24 certified and compliant with BS 5839-8 and EN 60849.
The loudspeaker has built-in protection to ensure that in the event of a fire damage there is no failure of the connected circuit. In this way, system integrity is maintained; ensuring loudspeakers in other areas can still be used to inform people of the situation.
Connections and Safety
The loudspeaker has a ceramic terminal block, thermal fuse, and heat-resistant, high-temperature wiring. The cabinets have a provision for internally mounting the line/loudspeaker supervision board (sold separately).
Certifications and Approvals
The loudspeaker is designed to withstand operating at its 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 the speakers can withstand 2 times their rated power for short durations.

This ensures extra reliability under extreme conditions, leading to greater customer satisfaction, longer operating life, and much less chance of failure or performance deterioration.
High-fidelity music and speech reproduction
Supplied with adjustable wall-mounting bracket
Self-restoring overload protection
Provision for internal mounting of the line / loudspeaker supervision board (sold separately)
EN 54-24 certified
In the Box
Bosch LB1-UM20E-L Premium-Sound Cabinet Loudspeaker Range (20W, White)
  • Mounting Bracket
  • Limited 3-Year Warranty
  • Table of Contents
    • 1Description
    Maximum Power 30 W
    Rated Power PHC: 20 W
    Power Taps 20 / 10 / 5 / 2.5 W
    Sound Pressure Level: At Rated Power / 1 W (1 kHz, 3.2' (1.0 m)): 101 dB / 88 dB (SPL)
    Frequency Range Effective (-10 dB): 90 Hz to 20 kHz
    Opening Angle: At 1 kHz / 4 kHz (-6 dB):
    Horizontal: 174° / 136°
    Vertical: 127° / 141°
    Input Voltage Rated: 12.65 / 70 / 100 V
    Impedance Rated: 8 / 250 / 500 Ω
    Connector 3-pole screw block
    Sensitivity Octave SPL 1 W/1 m:
    125 Hz: 82.5
    250 Hz: 82.5
    500 Hz: 85.4
    1000 Hz: 88.2
    2000 Hz: 88.0
    4000 Hz: 85.5
    8000 Hz: 86.3

    Total octave SPL 1 W/m:
    A-weighted: 84.1
    Lin-weighted: 85.0

    Total octave SPL Pmax/m:
    A-weighted: 96.4
    Lin-weighted: 97.4

    Acoustical performance specified per octave. All measurements are done with a pink noise signal; the values are in dBSPL.

    Angle Horizontal
    125 Hz: 360
    250 Hz: 360
    500 Hz: 206
    1000 Hz: 174
    2000 Hz: 128
    4000 Hz: 136
    8000 Hz: 132
    125 Hz: 360
    250 Hz: 360
    500 Hz: 360
    1000 Hz: 127
    2000 Hz: 141
    4000 Hz: 141
    8000 Hz: 117
    Operating Temperature -13 to +131°F (-25 to +55°C)
    Storage Temperature -40 to +158°F (-40 to +70°C)
    Relative Humidity <95%
    Certifications and Approvals
    Safety According to EN 60065
    Emergency According to BS 5839-8, EN 60849, & EN 54-24
    Water and Dust Resistance According to EN60529 IP65
    Self-Extinguishing ABS According to UL 94 V 0
    Force Wind: According to NEN 6702:2007 +A1: 2008, Bft11
    Certification Europe CPD
    Material Cabinet: Aluminum
    Front Grille: Aluminum
    Top and Bottom: ABS
    Diameter Loudspeaker: Woofer: 5.0" (134.5 mm)
    Dome Tweeter: 1.0" (25.4 mm)
    Dimensions 10.78 x 6.29 x 7.08" (274.00 x 160.00 x 180.00 mm)
    Weight 8.55 lb (3.88 kg)
    Packaging Info
    Package Weight 9.866 lb
    Box Dimensions (LxWxH) 0.44 x 0.24 x 0.24"
    Note: Technical performance data according to IEC 60268-5.

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