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Bosch Security Systems | 2011-02
Praesideo 3.5 | Installation and User Instructions | 4 | Amplifiers en | 180
10.7.9 Audio line inputs 10.7.10 Loudspeaker outputs and spare
inputs
Connector (rear side):
3 pole header for removable screw connector
Preferred cable:
Twisted pair, shielded
Input signal level:
0 dBV nominal
18 dBV maximum
Input sensitivity setting:
< -40 to 0 dB with pre-set control
Frequency response:
-3 dB points at 50 Hz and 20 kHz (tolerance ± 1 dB)
Input impedance:
22 kohm
Signal/Noise ratio:
> 87 dB (rms unweigthed)
Common mode rejection ratio:
> 40 dB at 1 kHz
Input cross-talk:
< -70 dB at 1 kHz
Connector (rear side):
1 x 6 pole header with removable screw connector
Voltage:
100 V, 70 V (jumper setting)
Max. unloaded voltage:
200 V peak
Rated load resistance:
@ 100/70 V output
PRS-1B500
20 /10 ohm
PRS-2B250
40/20 ohm
PRS-4B125
80/40 ohm
PRS-8B060
166/83 ohm
Rated load capacitance:
@ 100/70 V output
PRS-1B500
250/500 nF
PRS-2B250
125/250 nF
PRS-4B125
60 /125 nF
PRS-8B060
30/60 nF
Rated output power:
@ a/b/c/d/e/f operating condition
PRS-1B500
1 x 500/400/275/180/180/125 W
PRS-2B250
2 x 250 /210/150/110/110/60 W
PRS-4B125
4 x 125/105/65/60/60/30 W
PRS-8B060
8 x 60/50/40/30/30/15 W
Distortion:
< 0.3% at 1 kHz and 50% of the rated output power
< 1% at 100% of output power
Output regulation no load to full load:
<1.2 dB for 70 and 100V output