LBB442x/xx Power amplifier

1, 2, 4, or 8 audio outputs (selection from 100 / 70 / 50 V outputs)
Audio processing and delay for each amplifier channel
Amplifier supervision and spare amplifier switching
Loudspeaker line and loudspeaker supervision (LBB 4428/00 only line supervision)
Eight control inputs and 1, 2, 4 or 8 control outputs
Supervision of line attached to control inputs
Automatic volume control
Two audio inputs (4 audio inputs for LBB 4428/00)
Redundant network connection

Mains power supply
Voltage	100 to 240 VAC ±10%, 50/60 Hz
Power consumption	Pmax -3 dB* / idle** / standby
LBB 4421/10	404 / 56 / 28 W
LBB 4422/10	402 / 60 / 28 W
LBB 4424/10	426 / 83 / 37 W
LBB 4428/00	433 / 90 / 32 W
* Alarm tone level** With pilot tone 15 V
Battery power supply
Voltage	48 VDC -10% to +20%
Power consumption	Pmax -3 dB* / idle** / standby
LBB 4421/10	380 / 46 / 20 W
LBB 4422/10	378 / 50 / 21 W
LBB 4424/10	399 / 76 / 28 W

LBB 4428/00	397 / 63 / 22 W
* Alarm tone level** With pilot tone 15 V
Mic/line inputs	2 x (4 x for LBB 4428/00)
Connector	6-pole header for removable screw connector (mono, balanced)
Line
Frequency response	-3 dB @ 50 Hz and 20 kHz (±1 dB)
S/N	>87 dBA
CMRR	>40 dB @ 1 kHz
Input range	-6 dBV to 6 dBV
Input impedance	22 kohm
Mic
Frequency response	-3 dB @ 100 Hz and 16 kHz
Nominal input level	-57 dBV
S/N	>62 dBA with 25 dB headroom
CMRR	40 dB at 1 kHz

Input impedance	1360 ohm
Phantom supply	12 V ±1 V @ 15 mA
Input range	-7 dBV to +8 dBV ref nominal input value
Control inputs	8 x
Connectors	Removable screw terminals
Operation	Closing contact (with supervision)
Control outputs	1 x per amplifier channel
Connectors	Removable screw terminals
Loudspeaker outputs	LBB 4421/10
Rated load resistance	20 ohm (100 V); 10 ohm (70 V)
Rated load capacitance	250 nF (100 V); 500 nF (70 V)
Rated output power(per channel)	500 W (1 min. at 55 °C)
250 W (30 min. at 55 °C, cont. at 30 °C)
125 W (cont. at 55 °C)
Loudspeaker outputs	LBB 4422/10

SẢN PHẨM CHÍNH