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Bosch LBB-1938/30

Bosch LBB-1938/30 480W Power Amplifier. Line Level (XLR) and 100V Line Input.

$1,374.00 $1,254.00

In Stock
 
 
 
SKU: LBB-1938/20 Category: Tag:

Description

Bosch LBB-1938/30 480W Power Amplifier. Line Level (XLR) and 100V Line Input for easy addition to existing 100V line system.

LEDs on the front panel of the Bosch LBB-1938/20 show the status of the amplifier: power, audio output level, and supervised functions.

This high performance unit fulfills a wide range of public address requirements at a surprisingly low cost.

There are two separate priority controlled 100 V outputs for zones that only need announcements made via the priority input, and for zones that will not get any announcements made via the priority input.

Rack mounting brackets supplied.

Features

  • 480 watts
  • Very high audio performance power amp
  • Can be used to boost Plena Voice alarm systems with system monitoring
  • XLR and jack input with XLR and Jack loop through outputs
  • 100 volt line input. Ideal for remote location booster amps
  • 100v, 70v and 8 ohm outputs
  • 24v override relay output
  • Temperature controlled fan
  • AC and 24VDC operation
  • LED VU Meter
  • Dual inputs with priority switching
  • Temperature controlled forced front to back
  • Mains, battery back-up, and pilot tone supervision
  • TÜV certified according to IEC 60849

Specification

Voltage: 230VAC, ±10%, 50/60 Hz
Inrush current :19 A
Max power consumption: 2200 VA
Battery power supply
Voltage: 24 VDC, +20% / -10%
Current max: 30 A
Performance
Output power (rms/maximum): 480 W / 720 W
Power reduction on backup power: -1 dB
Mains power supply
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

Downloads

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