PRS‑xPxxx and LBB 4428/00 Power Amplifiers

PRS‑xPxxx and LBB 4428/00 Power Amplifiers
  • 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 (four audio inputs for LBB 4428/00)
  • Redundant network connection
  • Details
    Mains power supply
    Voltage
       PRS‑xPxxx 115 / 230 VAC ±10%, 50/60 Hz
       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
    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
    Performance
    Frequency response
       PRS‑xPxxx 60 Hz to 19 kHz (-3 dB)
       LBB 4428/00 80 Hz to 19 kHz (-3 dB)
    S/N >85 dB (no pilot tone)
    Crosstalk <80 dB at nominal load for 1 kHz
    Distortion <0.3% (@ 1 kHz) @ 50% of rated output power
    Loudspeaker outputs PRS‑1P500
    Rated load resistance 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. at 55 °C, cont. at 30 °C)
    125 W (cont. at 55 °C)
    Connector 9‑pole header for removable screw connector
    Loudspeaker outputs PRS‑2P250
    Rated load resistance 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)
    125 W (30 min. at 55 °C, cont. at 30 °C)
    60 W (cont. at 55 °C)
    Connector 9‑pole header for removable screw connector
    Loudspeaker outputs PRS‑4P125
    Rated load resistance 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. at 55 °C, cont. at 30 °C)
    30 W (cont. at 55 °C)
    Connector 9‑pole header for removable screw connector
    Loudspeaker outputs LBB 4428/00
    Rated load resistance 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. at 55 °C, cont. at 30 °C)
    15 W (cont. at 55 °C)
    Connector 9‑pole header for removable screw connector
    Dimensions (H x W x D)
    for tabletop use, with feet 92 x 440 x 400 mm(3.6 x 17.3 x 15.7 in)
    for 19” rack use, with brackets 88 x 483 x 400 mm(3.5 x 19 x 15.7 in)
       in front of brackets 40 mm (1.6 in)
       behind brackets 360 mm (14.2 in)
    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 Standalone; 19”-rack
    Color Charcoal with silver
    Operating temperature -5 ºC to +55 ºC (+23 ºF to +131 ºF)
    Storage and transport temperature -20 ºC to +70 ºC (-4 ºF to +158 ºF)
    Relative humidity 15% to 90%
    Air pressure 600 to 1100 h Pa

    Images

     
  • Certificates (2)
     
  • Documents (1)
    Title Type Language
    Data Sheet PDF
     
 

Product variants

PRS-1P500 Power amplifier, 1x500W

1-channel power amplifier with Praesideo network connection, 1 x 500 W, rack unit 2 RU.

Commercial Type No.: PRS-1P500
Product No.: F.01U.065.237

 
PRS-2P250 Power amplifier, 2x250W

2-channel power amplifier with Praesideo network connection, 2 x 250 W, rack unit 2 RU.

Commercial Type No.: PRS-2P250
Product No.: F.01U.065.240

 
 
PRS-4P125 Power amplifier, 4x125W

4-channel power amplifier with Praesideo network connection, 4 x 125 W, rack unit 2 RU.

Commercial Type No.: PRS-4P125
Product No.: F.01U.065.241

 
LBB4428/00 Power amplifier, 8x60W

Rack unit 2 HU, 8-channel power amplifier with Praesideo network connection, 8 x 60 W.

Commercial Type No.: LBB4428/00
Product No.: F.01U.029.447

 
 
PRS-1P500-EU Power amplifier, 1x500W

1‑channel power amplifier with Praesideo network connection, 1 x 500 W, rack unit 2 RU.

Commercial Type No.: PRS-1P500-EU
Product No.: F.01U.294.088

 
PRS-2P250-EU Power amplifier, 2x250W

2‑channel power amplifier with Praesideo network connection, 2 x 250 W, rack unit 2 RU.

Commercial Type No.: PRS-2P250-EU
Product No.: F.01U.294.087

 
 
PRS-4P125-EU Power amplifier, 4x125W

4‑channel power amplifier with Praesideo network connection, 4 x 125 W, rack unit 2 RU.

Commercial Type No.: PRS-4P125-EU
Product No.: F.01U.294.086

 
 
 

Accessories

LBB4440/00 Supervision control board

LBB4440/00 Supervision control board

Line and loudspeaker supervision master PCB for mounting in a Praesideo network connected power amplifier, one board is needed per channel.

Commercial Type No.: LBB4440/00
Product No.: F.01U.513.883

 
LBB4441/00 Loudspeaker supervision board

LBB4441/00 Loudspeaker supervision board

Loudspeaker supervision slave PCB for mounting on a loudspeaker, operates with LBB4440/00 for monitoring the integrity of the loudspeaker.

Commercial Type No.: LBB4441/00
Product No.: F.01U.513.868

 
 
End-of-line supervision set

End-of-line supervision set

Master and slave PCB for supervising a single loudspeaker line. The master is mounted in a Praesideo network connected power amplifier (one per channel); the slave is connected at the end of the loudspeaker line.

Commercial Type No.: LBB4442/00
Product No.: F.01U.074.440

 
LBB4443/00 End-of-line supervision board

LBB4443/00 End-of-line supervision board

Line supervision slave PCB for connecting to the end of a loudspeaker line or the end of a spur, operates with LBB4440/00 to monitor the integrity of the line.

Commercial Type No.: LBB4443/00
Product No.: F.01U.513.884

 
 

LBB4440/00-CN Supervision control board

Line and loudspeaker supervision master PCB for mounting in a Praesideo network connected power amplifier, one board is needed per channel, Chinese version.

Commercial Type No.: LBB4440/00-CN
Product No.: F.01U.097.258

 

LBB4441/00-CN Loudspeaker supervision board

Loudspeaker supervision slave PCB for mounting on a loudspeaker, operates with LBB4440/00 for monitoring the integrity of the loudspeaker, Chinese version.

Commercial Type No.: LBB4441/00-CN
Product No.: F.01U.097.259

 
 

LBB4443/00-CN End-of-line supervision board

Line supervision slave PCB for connecting to the end of a loudspeaker line or the end of a spur, operates with LBB4440/00 to monitor the integrity of the line, Chinese version.

Commercial Type No.: LBB4443/00-CN
Product No.: F.01U.097.260