Specifications

Bosch Security Systems B.V.www.boschsecurity.com
Other Applicable Congress Products | 39
LBB 4402/00 Audio Expander
Features
X Stylish and modern design (IF award)
X Room coupling facility
X Versatile audio distribution facility
X Optical network for coupling to the CCU
X Redundant network capability
Introduction
The audio expander can contribute audio to and distribute
audio from the system. Typical applications are room
coupling and audio distribution.
Functions
•
Redundant network cabling can be either single branch
or redundant loop
• Audio line inputs (of which 2 can be configured as
microphone input) for floor and interpretation channels
• Audio line outputs for floor and interpretation channels
• Flexible routing of floor and interpretation channels
• Adjustable sensitivity for the audio inputs
• Adjustable level for the audio outputs
• Configuration of the Audio Expander via a display and a
single rotary/push button
• Each Audio Expander can be assigned a unique name by
the installer for easy identification
• VU meter readings to monitor audio inputs and audio
outputs. The audio can be monitored using a headphone
• 19” (2U) housing for table top or rack mounting
• Handgrips for easy transportation
• The unit is powered from the network
Controls and Indicators
• 2 x 16 Character LCD display for status display and
configuration of the Audio Expander
• Rotary/push control to navigate through the LCD menus
Interconnections
Front
• One stereo headphone output 3.5 mm (0.14 in)
Back
• Two optical network connections for connecting to the
CCU
• Four three-pole XLR balanced audio line inputs with
galvanic separation
• Four stereo Cinch unbalanced audio line inputs
• Four three-pole XLR balanced audio line outputs with
galvanic separation
• Four stereo Cinch unbalanced audio line outputs
• Eight control inputs to enable audio inputs and audio
outputs
• Five control outputs to indicate channel engaged state
Parts Included
Technical Specifications
Quantity Component
1 LBB 4402/00 Audio Expander
1 Set of mounting brackets for 19” rack
1 Set of feet
1 Set of connectors
Electrical
Supply voltage 24 to 48 VDC
Power consumption 7.6 W (DC)
Frequency response 30 Hz to 20 kHz (-3 dB at nominal level)
THD at nominal level <0.5%
Crosstalk attenuation >85 dB at 1 kHz
Dynamic range >90 dB
Signal-to-noise ratioo >87 dBA
Audio line inputs
XLR nominal input 0 dBV (±6 dB)
XLR maximum input +12 dBV
Cinch nominal input +12 dBV (±6 dB)
Cinch maximum input 0 dBV
Audio mic inputs
Nominal input 57 dBV (±6 dB)
Maximum input 26 dBV
Phantom supply 12 V ±1 V at 15 mA
Audio line outputs
XLR nominal output 12 dBV (+6 / -24 dB)
XLR maximum output +12 dBV
Cinch nominal output 24 dBV (+6 / -24 dB)
Cinch maximum output 0 dBV
Mechanical
Dimensions (H x W x D)
for tabletop use, with feet
for 19” rack use, with brackets
in front of brackets
behind brackets
92 x 440 x 400 mm
(3.6 x 17.3 x 15.7 in)
88 x 483 x 400 mm
(3.5 x 19 x 15.7 in)
40 mm (1.6 in)
360mm (14.2in)
Weight 7 kg (15.4 lbs)
Mounting Tabletop, 19”-rack
Color Charcoal (PH 10736) with silver