خانه صوت و کنفرانس بوشPublic Address and Voice AlarmDigital PA and Emergency Sound Praesideo System

PRS‑xBxxx Basic Amplifiers

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Technical Specifications
Electrical Mains power supply
Voltage 115/230 VAC ±10%, 50/60 Hz
Power consumption Pmax -3 dB* / idle** / standby
PRS-1B500 450 / 52 / 17 W
PRS-2B250 378 / 46 / 18 W
PRS‑4B125 395 / 62 / 16 W
PRS‑8B060 400 / 80 / 16 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-1B500 365 / 34 / 6 W
PRS-2B250 370 / 38 / 6 W
PRS‑4B125 375 / 48 / 9 W
PRS‑8B060 385 / 62 / 10 W
Alarm tone level ** With pilot tone 15 V
Performance
Frequency response 60 Hz to 19 kHz (-3 dB)
80 Hz to 19 kHz (-3 dB, PRS‑8B060)
Total harmonic distortion <0.3% (1kHz) at 50% of rated power
Cross talk -70 dB (1 kHz) nominal (only multichannel)
Signal‑to‑noise ratio >85 dB with pilot tone off
Line inputs
Local audio input 0 dBV (symmetrical)
Speaker outputs PRS-1B500
Rated load resistance 20 ohm (100 V); 10 ohm (70 V)
Rated load capacitance 250 nF (100 V); 500 nF (70 V)
Rated output power 500 W (1 min. at 55 °C)
250 W (30 min. at 55 °C, cont. at 30 °C)
125 W (cont. at 55 °C
Speaker outputs PRS-2B250
Rated load resistance 40 ohm (100 V); 20 ohm (70 V)
Rated load capacitance 125 nF (100 V); 250 nF (70 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)
Speaker outputs PRS-4B125
Rated load resistance 80 ohm (100 V); 40 ohm (70 V)
Rated load capacitance 60 nF (100 V); 125 nF (70 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)
Speaker outputs PRS-8B060
Rated load resistance 160 ohm (100 V); 80 ohm (70 V)
Rated load capacitance 30 nF (100 V); 60 nF (70 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)
Mechanical Dimensions (H x W x D)
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‑1B500 12 kg (26.5 lb)
PRS‑2B250 14 kg (30.9 lb)
PRS‑4B125 15 kg (33.4 lb)
PRS‑8B060 13.7 kg (30.5 lb)
Mounting 19” rack
Color Charcoal with silver
Environmental Operating temperature -5 to +55 ºC (+23 ºF to +131 ºF)
Storage temperature -40 to +70 ºC (-40 ºF to +158 ºF)
Relative humidity 15% to 90%
Air pressure 600 to 1100 hPa
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