Amply công suất 480/720W BOSCH LBB-1938/20

Mains power supply

Voltage

230 VAC ±10%, 50/60 Hz

Inrush current

19A

Max power consumption

2200 VA

Battery power supply

Voltage

24 VDC, +15% / -15%

Current max

30 A

Performance

Output power (rms/ maximum)

480/ 720W

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, 1KHz

S/N (flat at max volume)

>90 dB

Line Inputs

2 x

Connector

3-pin XLR, balanced

Sensitivity

1V

Impedance

20KΩ

CMRR

>25 dB (50 Hz to 20 kHz)

Gain

40 dB

100V input

Connector

Screw, unbalanced

Sensitivity

100 V

Impedance

330 KΩ

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, 8Ω

Priority only (from input 1)

100V or 70V internally selectable

Music (non-priority) only

100V or 70V internally selectable

Power consumption

Mains operation

990 W (Max power), 715 W (-3dB), 510 W  (-6dB), 110 W (Pilot tone), 25 W (Idle)

24 VDC operation

32 A/ 770 W (Max power), 26 A/ 625 W (-3dB), 18 A/ 430 W (-6dB), 3.8 A/ 91 W (Pilot tone), 0.7 A/ 17 W (Idle)

Mechanical

Acoustic noise level of fan

< 48dB SPL @ 1m (max output)

Mounting

Stand-alone, 19 inch rack

Color

Charcoal

Dimensions

145 x 430 x 370 mm

Weight

Approx. 25 kg