LBB 1935/20 Plena Power Amplifier

Commercial Type No.: LBB1935/20
Product No.: F.01U.024.957

LBB 1935/20 Plena Power Amplifier
  • 240 W power amplifier in a 2U high housing
  • EN 54‑16 certified
  • 70 V / 100 V and 8 ohm outputs
  • Dual inputs with priority switching
  • 100 V input for slave operation on 100 V speaker line

Mains power supply
Voltage 230 VAC, ±10%, 50/60 Hz
Inrush current 9 A
Max power consumption 760 VA
Battery power supply
Voltage 24 VDC +15% / -15%
Current max 11 A
Performance
Output power (rms/maximum) 240 / 360 W
Power reduction on backup power -1 dB
Frequency response 50 Hz to 20 kHz (+1 / ‑3 dB at ‑10 dB ref. rated output)
Distortion <1% at 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) 100 V or 70 V internally selectable
Music (non-priority) only 100 V or 70 V internally selectable
Mains operation
Max power 451 W
-3dB 340 W
-6dB 244 W
Pilot tone* 55 W
Idle 16 W
24 V operation
Max power 12.1 A (290 W)
-3 dB 11.4 A (274 W)
-6 dB 8.1 A (194 W)
Pilot tone* 1.7 A (41 W)
Idle 0.3 A (7 W)
Dimensions (H x W x D) 100 x 430 x 270 mm(19" wide, 2U high, with feet)
Weight Approx. 12.5 kg
Mounting Standalone, 19”rack
Color Charcoal
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 at 1 m (max output)

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