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Bosch PRS?xPxxx Information page 3

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3 | PRS‑xPxxx and LBB 4428/00 Power Amplifiers
Mic/line inputs
Connector
Line
Frequency response
S/N
CMRR
Input range
Input impedance
Mic
Frequency response
Nominal input level
S/N
CMRR
Input impedance
Phantom supply
Input range
Control inputs
Connectors
Operation
Control outputs
Connectors
Performance
Frequency response
PRS‑xPxxx
LBB 4428/00
S/N
Crosstalk
Distortion
Loudspeaker outputs
Rated load resistance
Rated load capacitance
Rated output power
(per channel)
2 x (4 x for LBB 4428/00)
6-pole header for removable screw
connector (mono, balanced)
-3 dB @ 50 Hz and 20 kHz (±1 dB)
>87 dBA
>40 dB @ 1 kHz
-6 dBV to 6 dBV
22 kohm
-3 dB @ 100 Hz and 16 kHz
-57 dBV
>62 dBA with 25 dB headroom
40 dB at 1 kHz
1360 ohm
12 V ±1 V @ 15 mA
-7 dBV to +8 dBV ref nominal input
value
8 x
Removable screw terminals
Closing contact (with supervision)
1 x per amplifier channel
Removable screw terminals
60 Hz to 19 kHz (-3 dB)
80 Hz to 19 kHz (-3 dB)
>85 dB (no pilot tone)
<80 dB at nominal load for 1 kHz
<0.3% (@ 1 kHz) @ 50% of rated
output power
PRS‑1P500
20 ohm (100 V); 10 ohm (70 V) 5 ohm
(50 V)
250 nF (100 V); 500 nF (70 V)
1000 nF (50 V)
500 W (1 min. at 55 °C)
250 W (30 min. at 55 °C, cont. at
30 °C)
Connector
Loudspeaker outputs
Rated load resistance
Rated load capacitance
Rated output power
(per channel)
Connector
Loudspeaker outputs
Rated load resistance
Rated load capacitance
Rated output power
(per channel)
Connector
Loudspeaker outputs
Rated load resistance
Rated load capacitance
Rated output power
(per channel)
Connector
Mechanical
Dimensions (H x W x D)
for tabletop use, with feet
for 19" rack use, with
brackets
in front of brackets
behind brackets
125 W (cont. at 55 °C)
9‑pole header for removable screw
connector
PRS‑2P250
40 ohm (100 V); 20 ohm (70 V)
10 ohm (50 V)
125 nF (100 V); 250 nF (70 V) )
500 nF (50 V)
250 W (1 min. at 55 °C)
125 W (30 min. at 55 °C, cont. at
30 °C)
60 W (cont. at 55 °C)
9‑pole header for removable screw
connector
PRS‑4P125
80 ohm (100 V); 40 ohm (70 V)
20 ohm (50 V)
62 nF (100 V); 125 nF (70 V) ) 250 nF
(50 V)
125 W (1 min. at 55 °C)
60 W (30 min. at 55 °C, cont. at 30 °C)
30 W (cont. at 55 °C)
9‑pole header for removable screw
connector
LBB 4428/00
166 ohm (100 V); 83 ohm (70 V)
42 ohm (50 V)
30 nF (100 V); 60 nF (70 V) ) 120 nF
(50 V)
60 W (1 min. at 55 °C)
30 W (30 min. at 55 °C, cont. at 30 °C)
15 W (cont. at 55 °C)
9‑pole header for removable screw
connector
92 x 440 x 400 mm
(3.6 x 17.3 x 15.7 in)
88 x 483 x 400 mm
(3.5 x 19 x 15.7 in)
40 mm (1.6 in)
360 mm (14.2 in)

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