Bosch Appliances manual LBB 1925/10 Plena System Pre-Amplifier, Mechanical, Environmental

3 LBB 1925/10 Plena System Pre-Amplifier

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/	>75 dB
muted)
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 /	1 x
emergency
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
Mechanical
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
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%
Ordering information

LBB 1925/10 Plena System Pre-Amplifier

6-zone, 2-channel distribution system unit with call and BGM (background music)

Order number LBB1925/10