BOSCH LBB 1930/20 Power Amplifier 120 Watt
Power amplifier, 120 W power amplifier in a 2U-high, 19” case for rack mounting or tabletop use.
Cek Harga
Description
The LBB 1930/20 is a powerful 120 W power amplifier in a 2U high 19” case for rack mounting or tabletop use. LEDs on the front panel show the status of the amplifier: power, audio output level, and supervised functions. This high-performance unit fulfills a wide range of public address requirements at a surprisingly low cost.
Fitur
- 120 W power amplifier in a compact housing
- 70 V / 100 V and 8 ohm outputs
- Dual inputs with priority switching
- 100 V input for slave operation on 100 V speaker line
- Temperature controlled forced front to back ventilation, directly stackable.
Spesifikasi
Electrical
Mains power supply | |
Voltage | 230 VAC ±10%, 50/60 Hz |
Inrush current | 8 A |
Max power consumption | 400 VA |
Battery power supply | |
Voltage | 24 VDC +15% / -15% |
Current max | 6 A |
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 dBref. 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) |
* 20 kHz -20dB with maximum loudspeaker load
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) |