Bosch PLE-1MEXX0-XX Specifications download pdf (Page 38)

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38 | PA and Emergency Sound | Plena Public Address Solutions

Safety acc. to EN 60065

Immunity acc. to EN 55103-2

Emission acc. to EN 55103-1

Emergency acc. to EN 54‑16 / EN 60849

Parts Included

Quantity Component

1 LBB 1938/20 Plena Power Amplifier

1 Power cord

1 Set of 19" mounting brackets

1 Installation and User Instructions

Technical Specifications

Electrical

Mains power supply

Voltage 230 VAC, ±10%, 50/60 Hz

Inrush current 19 A

Max power consumption 2200 VA

Battery power supply

Voltage 24 VDC +15% / -15%

Current max 30 A

Performance

Output power (rms/maximum) 480 W / 720 W

Power reduction on backup

power

-1 dB

Frequency response 50 Hz to 20 kHz (+1/‑3 dB @ ‑10 dB

ref. rated output)

Distortion <1% @ rated output power, 1 kHz

S/N (flat at max volume) >90 dB

Line inputs 2 x

Connector 3-pin XLR, balanced

Sensitivity 1 V

Impedance 20 kohm

CMRR >25 dB (50 Hz to 20 kHz)

Gain 40 dB

100 V input

Connector Screw, unbalanced

Sensitivity 100 V

Impedance 330 kohm

Line loop-through output 2 x

Connector 3-pin XLR

Nominal level 1 V

Impedance Direct connection to line input

Loudspeaker outputs 3 x

Connector Screw, floating

Direct output 100 V, 70 V, 8 ohm

Priority only (from input 1) 100V or 70 V internally selectable

Music (non-priority) only 100V or 70 V internally selectable

Power consumption

Mains operation

Max power 990 W

-3dB 715 W

-6dB 510 W

Pilot tone* 110 W

Idle 25 W

24 VDC operation

Max power 32 A (770 W)

-3 dB 26 A (625 W)

-6 dB 18 A (430 W)

Pilot tone* 3.8 A (91 W)

Idle 0.7 A (17 W)

* 20 kHz -20dB with maximum loudspeaker load

Mechanical

Dimensions (H x W x D) 145 x 430 x 370 mm

(19" wide, 3U high, with feet)

Weight Approx. 25 kg

Mounting Standalone, 19”rack

Color Charcoal

Environmental

Operating temperature -10 ºC to +55 ºC (14 ºF to +131 ºF)

Storage temperature -40 ºC to +70 ºC (-40 ºF to +158 ºF)

Relative humidity <95%

Acoustic noise level of fan <48 dB SPL @ 1 m (max output)

Ordering Information

LBB 1938/20 Plena Power Amplifier

480 W power amplifier in a 3U high 19”case

for rack mounting or tabletop use.

LBB1938/20

Bosch Security Systems B.V. www.boschsecurity.com

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Bosch PLE-1MEXX0-XX Specifications Page 38

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