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
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
3 | LBB 1925/10 Plena System Pre-Amplifier
