Bosch lbb4428 / 00-cn 8x60w power amplifier
Business type: lbb4428 / 00-cn
Product No.: f.01u.077.048


Amplifier monitoring and standby amplifier switching function
Monitor the line connected to the control input
Automatic volume control
Redundant network connection
Lbb4428 / 00-cn 8x60w power amplifier China cn: 41334 f.01u.077.048
PRS ￣ xpxxx and LBB 4428 / 00 power amplifier
PRS ￣ xpxxx and LBB 4428 / 00 power amplifier
1. 2, 4 or 8 audio output (100 / 70 / 50 V output can be selected)
Each amplifier channel has audio processing and delay functions
Amplifier monitoring and standby amplifier switching function
Speaker line and speaker monitoring (LBB 4428 / 00 line monitoring only)
8 control inputs and 1, 2, 4 or 8 control outputs
Monitor the line connected to the control input
Automatic volume control
2 audio inputs (LBB 4428 / 00 has 4 audio inputs)
Redundant network connection
Main power supply
Voltage
PRS‑xPxxx 115/230VAC ±10%，50/60Hz
LBB 4428 / 00 100 to 240 VAC ± 10%, 50 / 60 Hz
Power consumption Pmax - 3 dB * / idle * * / standby
PRS‑1P500 350 / 50 / 20 W
PRS‑2P250 350 / 53 / 21 W
PRS‑4P125 350 / 66 / 23 W
LBB 4428/00 430 / 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
PRS‑1P500 330 / 40 / 10 W
PRS‑2P250 330 / 43 / 11 W
PRS‑4P125 330 / 56 / 13 W
LBB 4428/00 400 / 65 / 22 W
*Alarm tone level * * with pilot tone 15 V
Microphone / line input 2 channels (LBB 4428 / 00 has 4 channels)
Connector 6-pin connector for detachable screw interface (mono, balanced)
line
Frequency response - 3 dB @ 50 Hz and 20 kHz (± 1 dB)
SNR > 87 DBA
CRR > 40 dB @ 1 kHz
Input range - 6 dbv to 6 dbv
Input impedance 22 kohm
Microphone
Frequency response - 3 dB @ 100 Hz and 16 kHz
Rated iput level - 57 dbv
SN > 62 DBA (25 dB margin)
The CMRR is 40 dB at 1 kHz
Input impedance 1360 ohm
Phantom power 12 V ± 1 V @ 15 Ma
Input range - 7 dbv to + 8 dbv reference rated input
Control input 8 x
Connector detachable screw terminal

Operation closing contact (with monitoring)

Control output 1 x (per amplifier channel)
Connector detachable screw terminal
performance
frequency response
PRS ￣ xpxxx 60 Hz to 19 kHz (- 3 dB)
LBB 4428 / 00 80 Hz to 19 kHz (- 3 dB)
SNR > 85 dB (no pilot tone)
Crosstalk < 80 dB, rated load, 1 kHz
Distortion < 0.3% (@ 1 kHz) @ 50% of rated output power
Speaker output PRS ￣ 1p500
Rated load impedance 20 ohm (100 V); 10 ohm (70 V) 5 ohm (50 V)
Rated load capacitance 250 NF (100 V); 500 NF (70 V) 1000 NF (50 V)
Rated output power (per channel) 500 W (1 min at 55 ° C)
250 W (30 min, 55 ° C; continuous, 30 ° C)
125 w (continuous at 55 ° C)
Connector 9-pin connector for detachable screw connector
Speaker output PRS ￣ 2p250
Rated load impedance 40 ohm (100 V); 20 ohm (70 V) 10 ohm (50 V)
Rated load capacitance 125 NF (100 V); 250 NF (70 V) 500 NF (50 V)
Rated output power (per channel) 250 W (1 min at 55 ° C)
125w (30 min, 55 ° C; continuous, 30 ° C)
Continuous at 60 ° C
Connector 9-pin connector for detachable screw connector
Speaker output PRS ￣ 4p125
Rated load impedance 80 ohm (100 V); 40 ohm (70 V) 20 ohm (50 V)
Rated load capacitance 62 NF (100 V); 125 NF (70 V) 250 NF (50 V)

Rated output power (per channel) 125 w (1 min at 55 ° C)

60 W (30 min, 55 ° C; continuous, 30 ° C)

30W (continuous, at 55 ° C)

Connector 9-pin connector for detachable screw connector
Speaker output LBB 4428 / 00
Rated load impedance 166 ohm (100 V); 83 ohm (70 V) 42 ohm (50 V)
Rated load capacitance 30 NF (100 V); 60 NF (70 V) 120 NF (50 V)
Rated output power (per channel) 60 W (1 min at 55 ° C)
30 W (30 min, 55 ° C; continuous, 30 ° C)
15W (continuous, at 55 ° C)
Connector 9-pin connector for detachable screw connector
Dimensions (H x W x D)
Desktop mount with legs 92 x 440 x 400 mm (3.6 x 17.3 x 15.7 in)
19 "cabinet mount with bracket 88 x 483 x 400 mm (3.5 x 19 x 15.7 in)
Front of bracket 40 mm (1.6 in)
360 mm (14.2 in) behind bracket
weight
PRS ￣ 1p500 12.6 kg (27.78 lb)
PRS ￣ 2p250 13.6 kg (29.98 lb
PRS ￣ 4p125 16.1 kg (35.49 lb)
LBB 4428 / 00 15.8 kg (34.83 lb)
Mounting stand-alone, 19 inch rack
Color carbon black and silver white

Operating temperature - 5 ° C to + 55 ° C (+ 23 ° f to + 131 ° f)

Storage and transportation temperatures - 20 ° C to + 70 ° C (- 4 ° f to + 158 ° f)
Relative humidity 15% to 90%
Air pressure 600 to 1100 HPA
Product variables
Lbb4428 / 00-cn power amplifier, 8x60w
8-channel power amplifier with Praesideo network connection, 8 x 60 W, rack unit 2 Ru, Chinese version.
Business type: lbb4428 / 00-cn
Product No.: f.01u.077.048
Prs-1p500-cn power amplifier, 1x500w
Single channel power amplifier with Praesideo network connection, 1 x 500 W, rack unit 2 Ru, Chinese version.
Business type: prs-1p500-cn
Product No.: f.01u.075.410
Prs-2p250-cn power amplifier, 2x250w
Dual channel power amplifier with Praesideo network connection, 2 x 250 W, rack unit 2 Ru, Chinese version.
Business type: prs-2p250-cn

Sales telephone (same number of wechat): 13428785305 QQ: 2461903042