Bosch LBB 1903/10 User Manual

Bosch Security Systems | 2003-09 | 3922 988 92883en

Plena Mixer Amplifier | Installation and Operating Manual |

en | 20

Technical data

6.1 Electrical

Mains voltage

230/115 Vac, ±10%, 50/60 Hz

Max mains power consumption

LBB1903/10

100 VA

LBB1906/10

200 VA

LBB1912/10, LBB1914/10

400 VA

Max mains inrush current

LBB1903/10

4.5 A/9 A (230/115 Vac)

LBB1906/10

5 A/10 A (230/115 Vac)

LBB1912/10, LBB1914/10

8 A/16 A (230/115 Vac)

Battery voltage

24 Vdc, +20%/-10%

Max battery current

LBB1903/10

1.6 A

LBB1906/10

3 A

LBB1912/10, LBB1914/10

6 A

6.2 Performance

Frequency response

50 Hz - 20 kHz (+1/-3 dB @ -10 dB ref. rated output)

Distortion

< 1% @ rated output, 1 kHz

Bass control

-8/+8 dB @ 100 Hz

Treble control

-8/+8 dB @ 10 kHz

6.3 Inputs

Input 1 (5-pin DIN, balanced with phantom power, 6.3 mm phone jack)

Input 2 (3-pin XLR, balanced with phantom power, 6.3 mm phone jack)

Sensitivity 1

Impedance

> 1 kOhm

S/N (flat at max volume)

63 dB

S/N (flat at min volume/muted)

> 75 dB

CMRR

> 40 dB (50 Hz - 20 kHz)

Headroom

> 25 dB

Speech filter

-3 dB @ 315 Hz, high-pass, 6 dB/oct

Phantom power supply

16 V via 1.2 kOhm

VOX (input 1 only)

attack time 150 ms
release time 2 s

Input 3 and 4 (3-pin XLR, balanced with phantom power, 6.3 mm phone jack)

Sensitivity

1 mV (microphone), 200 mV (line)

Impedance

> 1 kOhm (microphone)
> 5 kOhm (line)

S/N (flat at max volume)

63 dB (microphone), 70 dB (line)

S/N (flat at min volume/muted)

75 dB

CMRR

> 40 dB (50 Hz - 20 kHz)

Headroom

> 25 dB

Speech filter

-3 dB @ 315 Hz, high-pass, 6 dB/oct

Phantom power supply

16 V via 1.2 kOhm (microphone)

Technical data