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Bosch Security Systems | 2011-02
Praesideo 3.5 | Installation and User Instructions | 4 | Amplifiers en | 154
8.8.11 Loudspeaker outputs and spare
inputs
a Distortion < 1%, 1 kHz, nominal mains power or
battery >53V, max. 1 minute (acc. to IEC 60268-3).
b Distortion < 1%, 1 kHz, mains power or battery
>50V, max. 1 minute, ambient temperature 55 °C
(acc. to EN54-16).
c Distortion < 1%, 1 kHz, battery 48V, max. 1 minute,
ambient temperature 55 °C.
d Alarm tone level, distortion < 0.3%, 1 kHz, mains or
battery (>43.5V), max. 30 minutes, ambient
temperature 55 °C.
e Distortion < 0.3%, 1 kHz, mains or battery >43.5V,
continuous, ambient temperature 30 °C.
f Distortion < 0.3%, 1 kHz, mains or battery >43.5V,
continuous, ambient temperature 55 °C.
Connector (rear side):
1 x 9 pole header (type ETB 43-09-2-G1 (ECE)) with
removable screw connector (shared with control
outputs)
Voltage:
100 V, 70 V, 50 V (jumper setting)
Max. unloaded voltage:
200 V peak
Rated load resistance:
@ 100/70/50 V output
PRS-1P500
20 /10/5 ohm
PRS-2P250
40/20/10 ohm
PRS-4P125
80/40/20 ohm
LBB4428
166/83/42 ohm
Rated load capacitance:
@ 100/70/50 V output
PRS-1P500
250/500/1000 nF
PRS-2P250
125/250/500 nF
PRS-4P125
60/125/250 nF
LBB4428
30/60/120 nF
Rated output power:
@ a/b/c/d/e/f operating condition
PRS-1P500
1 x 500/425/275/185/185/125 W
PRS-2P250
2 x 250/210/150/105/105/60 W
PRS-4P125
4 x 125/105/65/60/60/30 W
LBB4428
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 50, 70 and 100V output
Frequency response:
60 Hz to 19 kHz (-3 dB) at -10 dB with maximum
capacitive load and rated load resistance
Power bandwidth:
60 Hz - 19 kHz (-3 dB, distortion < 1%) at 50% of the
rated output power
Signal/Noise ratio:
> 85 dBA with pilot tone off
Amplifier output limiting:
Soft clipping
Ground short detection resistance:
<50 ohm
Acoustical noise level:
< NR35 at 1 m, fans at half speed, table-top
< NR40 at 1 m, fans at full speed, table-top