| 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 |
