LB1-UM20E-L
Premium-sound aluminium cabinet loudspeaker, white, 20W
20 / 10 / 5 / 2.5 W | Aluminium enclosure and grille | 88 dB SPL (1W, 1m) | 90 Hz to 20 kHz | EN54-24
LB1-UM20E-L
Premium-sound aluminium cabinet loudspeaker, white, 20W
20 / 10 / 5 / 2.5 W | Aluminium enclosure and grille | 88 dB SPL (1W, 1m) | 90 Hz to 20 kHz | EN54-24
Bosch LB1-UM20E-L Product Highlights
Explore the key capabilities of the Bosch LB1-UM20E-L cabinet loudspeaker.
High-Fidelity Two-Way
5-inch woofer and 1-inch tweeter: 88 dB at 1 W, up to 101 dB, 90 Hz to 20 kHz.
EN54-24 Voice Alarm
EN54-24 and BS 5839-8; ceramic terminal, thermal fuse and heat-resistant wiring.
IP65, Indoor and Outdoor
Aluminium enclosure, IP65 and rated for wind force Bft 11.
Rotary Tap Switch
20 / 10 / 5 / 2.5 W on 70 V or 100 V, or direct 8 ohm, set in the base.
Bracket Supplied
Adjustable wall bracket included; fits the LBC1259 floor stand for events.
Self-Restoring Protection
Overload protection resets itself; room inside for a supervision board.
Premium Sound Speaker
The Premium‑sound range of cabinets is intended for clear reproduction of speech, foreground and background music to be used in general indoor and outdoor applications.
Protection
The loudspeakers have built‑in protection to ensure that in the event of a fire damage does not cause failure of the connected circuit. In this way, system integrity is maintained.
Voice Alarm
The LB1‑UM20E‑L are designed for voice alarm systems for use in buildings, where the performance of Public Address systems is subject to official regulations.
Key specs
- Taps 20 / 10 / 5 / 2.5 W (70 / 100 V), 8 ohm input
- Max 30 W
- 101 / 88 dB SPL at rated / 1 W (1 kHz, 1 m)
- 90 Hz to 20 kHz (-10 dB)
- Opening angle 174° / 136° H, 127° / 141° V (1 / 4 kHz)
- 5-inch woofer, 1-inch dome tweeter
- 274 x 160 x 180 mm, 3.88 kg
- Aluminium enclosure and grille, ABS end caps
- Ceramic loop-through terminal, thermal fuse
- IP65, wind force Bft 11
- White RAL 9010
- EN54-24, BS 5839-8
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Electrical |
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Description |
Premium‑sound Cabinet Loudspeaker |
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Maximum power |
30 W |
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Rated power (PHC) |
20 W |
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Power tapping |
20 / 10 / 5 / 2.5 W |
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Sound pressure level at rated power / 1 W (1 kHz, 1 m) |
101 dB / 88 dB (SPL) |
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Effective frequency range (-10 dB) |
90 Hz to 20 kHz |
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Opening angle at 1 kHz / 4 kHz (-6 dB) |
Horizontal: 174° / 136° Vertical: 127° / 141° |
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Rated input voltage |
12.65 / 70 / 100 V |
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Rated impedance |
8 / 250 / 500 ohm |
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Connector |
3‑pole screw block |
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Mechanical |
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Dimensions |
274x160x180mm 10.78x6.29x7.08in |
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Loudspeaker diameter |
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Woofer |
134.5 mm (5 in) |
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Dome tweeter |
25.4 mm (1 in) |
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Material |
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Cabinet |
Aluminum |
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Front grille |
Aluminum |
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Top and bottom |
ABS |
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Color |
White |
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Weight |
3.88 kg (8.55 lb) |
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Environmental |
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Operating temperature |
-25 ºC to +55 ºC (-13 ºF to +131 ºF) |
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Storage temperature |
-40 ºC to +70 ºC (-40 ºF to +158 ºF) |
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Relative humidity |
<95% |
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