Bosch Appliances Stereo Amplifier LBB 1925/10 User Manual

Impedance

>1 kohm (mic); >5 kohm (line)

S/N (flat at max volume)

>63 dB (mic); >70 dB (line)

S/N (flat at min volme/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, (mic mode only)

Line input

3 x

Connector

Cinch, stereo converted to mono,

unbalanced

Sensitivity

200 mV

Impedance

22 kohm

S/N (flat at max volume)

>70 dB

S/N (flat at min volume/

muted)

>75 dB

Headroom

>25 dB

Master output

1 x

Connector

3-pin XLR, balanced

Nominal level

1 V

Impedance

<100 ohm

Tape output

1 x

Connector

Cinch, 2 x mono

Nominal level

350 mV

Impedance

<1 kohm

Headphone output

1 x

Connector

6.3 mm jack stereo, signal mono

Nominal level

3 V

Impedance

<100 ohm

Zone relays

5 A

Contacts voltage

250 V

Contacts current

8 A

Interconnection input /

emergency

1 x

Connector

3-pin XLR, balanced

Sensitivity

200 mV (interconnection),

100 mV to 1 V adjustable

(emergency)

Impedance

>10 kohm

VOX threshold

45 mV (emergency)

Interconnection output

1 x

Connector

3-pin XLR, balanced

Nominal level

200 mV

Impedance

<100 ohm

Relay contacts

30 V, 1 A

DC supply output voltage

24 V, 250 mA max

Dimensions (H x W x D)

100 x 430 x 270 mm

(19" wide, 2U high)

Weight

Approx. 5 kg

Mounting

Standalone, 19" rack

Color

Charcoal

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%

LBB 1925/10 Plena System Pre-Amplifier
6-zone, 2-channel distribution system unit with call
and BGM (background music)
Order number 

 

3 | LBB 1925/10 Plena System Pre-Amplifier