خانه
صوت و کنفرانس بوشPublic Address and Voice AlarmPA, Commercial Sound and Emergency Sound Plena Public Address Solutions
LBB1930/20 Power amplifier, 1x120W
| Technical Specifications | ||
| Electrical | Mains power supply | |
| Voltage | 230 VAC ±10%, 50/60 Hz | |
| Inrush current | 8A | |
| Max power consumption | 400 VA | |
| Battery power supply | ||
| Voltage | 24 VDC +15% / -15% | |
| Current max | 6A | |
| Performance | ||
| Output power (rms/maximum) | 120 / 180 W | |
| Power reduction on backup power | -1 Db | |
| Frequency response | 50 Hz to 20 kHz (+1 / -3 dB at -10 dB ref. rated output) |
|
| Distortion | <1% at rated output power, 1 kHz | |
| S/N (flat at max volume) | >90 dB | |
| Line inputs | 2 x | |
| Connector | 3-pin XLR, balanced | |
| Sensitivity | 1 V | |
| Impedance | 20 kohm | |
| CMRR | >25 dB (50 Hz to 20 kHz) | |
| Gain | 40 dB | |
| 100 V input | ||
| Connector | Screw, unbalanced | |
| Sensitivity | 100 V | |
| Impedance | 330 kohm | |
| Line loop-through output | 2 x | |
| Connector | 3-pin XLR | |
| Nominal level | 1 V | |
| Impedance | Direct connection to line input | |
| Loudspeaker outputs | 3 x | |
| Connector | Screw, floating | |
| Direct output | 100 V, 70 V, 8 ohm | |
| Priority only (from input 1) | 100 V or 70 V internally selectable | |
| Music (non-priority) only | 100 V or 70 V internally selectable | |
| Power consumption | Mains operation | |
| Max power | 274 W | |
| -3dB | 193 W | |
| -6dB | 143 W | |
| Pilot tone* | 41 W | |
| Idle | 18 W | |
| 24 VDC operation | ||
| Max power | 7.0 A (168 W) | |
| -3 dB | 6.0 A (144 W) | |
| -6 dB | 4.3 A (103 W) | |
| Pilot tone* | 0.9 A (22 W ) | |
| Idle | 0.1 A (2.4 W) | |
| Mechanical | Dimensions (H x W x D) | 100 x 430 x 270 mm (19" wide, 2U high, with feet) |
| Weight | Approx. 10.5 kg | |
| Mounting | Standalone, 19”rack | |
| Color | Charcoal | |
| Environmental | Operating temperature | -10 ºC to +55 ºC (14 ºF to +131 ºF) |
| Storage temperature | -40 ºC to +70 ºC (-40 ºF to +158 ºF) | |
| Relative humidity | <95% | |
| Acoustic noise level of fan | <48 dB SPL at 1 m (max output) | |
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