DBC Network
Bridge
t the heart of a Digital B Chain system, the
Crown® DBCTM Bridge allows you to distrib-
Aute multiple channels of digital audio over
standard fast Ethernet hardware and cabling for
use in traditional, e-cinema and d-cinema applica-
tions.
The DBC Bridge accepts standard analog and/or
AES digital audio and CobraNetTM digital channels
from other Cinema processors (Dolby®, DTS®),
Cinema Servers, or Alternative Content Media
Players; and bridges (routes) them to a Crown
DBC network.
Features
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Accepts 8 inputs (7.1 surround) via one of the
following formats:
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Studio-grade DSP with multiple filter banks for
each channel (up to 256 filters)
Analog
AES/EBU
CobraNet
32 presets, 32 scenes, and 32 events can be
stored, labeled, and recalled
Analog monitoring of cinema processor inputs,
pre-amp, or post-amp signals
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Selectable mic or line auxiliary analog XLR
inputs for alternative content
Multiple-function control port for third-party
automation/control
Primary and Secondary 100mb Ethernet
“Single-Click” connection for DBC network
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Internal clock/calendar for scheduling events
Front-panel LCD display and control functions
of internal presets and system setup
This network is Crown’s proprietary “Single-Click”
solution that provides system control, monitoring,
and digital audio transport. The DBC network (fed
by the DBC Bridge) distributes the digital audio
and system-wide control protocol to Crown ampli-
fiers. The DBC Bridge also provides the necessary
system equalization, which is stored and recalled
via a series of presets for use in both feature film
and alternative content programming.
Auto leveling functions for dynamic volume
control of auditoriums or lobby
Full 32-channel CobraNet digital audio trans-
mit/receive capability
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Ambient leveling functions for maintaining
maximum signal-to-noise ratio
Enhanced matrix mixer capable of full 8x32
crosspoint matrix mixing
Three-year, No-Fault, Fully Transferable War-
ranty completely protects your investment and
guarantees its specifications
24-bit/48 kHz converters
Input Display: An eight-segment LED display
matrix shows input signal presence for all eight
analog or digital inputs.
Output Impedance: 100 ohms balanced, 50 ohms
unbalanced.
Specifications
Performance
Dynamic Range: >108 dB (A-weighted, 20 Hz-20
Digital Sampling: 24-bit, 48 kHz.
Crosstalk: > 80 dB at 10 kHz.
Output Display: An eight-segment LED display
matrix show output signals for all eight surround
channels.
kHz).
Required AC Mains: Universal AC input. Oper-
ates from 100 VAC to 240 VAC at 50/60 Hz, 24W
nominal.
Digital Sampling: 24-bit, 48 kHz.
LCD Control Screen: LCD digital display shows
information about the currently selected IQ
address, inputs, presets, scenes, and firmware
information.
Frequency Response: 0.5 dB, 20 Hz-20 kHz.
Total Harmonic Distortion: <0.05% THD+N
(1 kHz, 0 dBu).
AC Line Connector: 15A IEC AC power inlet.
Common Mode Rejection: 50 dB at 60 Hz (typi-
cal).
Next/Previous Buttons: These two buttons scroll
through parameters in each menu.
Control Port
Power Supply: +5 VDC and +10 VDC output. Total
output current 1A.
Maximum Input Level: +32 dBu (line) or +7 dBu
(mic).
Menu/Select Button: Scrolls through the menus of
IQ address, inputs, presets, scenes, and firmware
information. Also used to select a parameter that
is found by the Next/Prev buttons.
Monitor Output Logic Low: < 0.1V
Maximum Output Level: +20 dBu.
Monitor Output Logic High: 10 V (via internal pull-
up). Output current limited to 10 mA max per pin.
Required AC Mains: Universal AC input. Oper-
ates from 100 VAC to 240 VAC at 50/60 Hz, 24W
nominal.
Input Impedance: > 50 kilohms
Input Logic Low: < 0.5 V
Input Logic High: > 5V
Back Panel Controls, Indicators and Con-
nectors
Analog Audio Input: DB25 female connector
accepts eight balanced analog line-level analog
inputs. Pinout matches Dolby CP-650 analog
output.
AC Line Connector: 15A IEC AC power inlet.
Latency (analog, digital inputs): Analog: 1.13
mS. Digital: 2.28 mS at 48 kHz.
Input Analog Range: 0 to 10 V (for inputs 9-16
only)
A/D, D/A Converters: 24-bit 96 kHz Cirrus Logic
Digital Input: AES/EBU, 24-bit, 32-96 kHz.
Onboard sample rate converter.
Max. Input Voltage: 25 V
AES/EBU Digital Audio Input: DB25 female con-
nector accepts eight AES3 digital audio signals.
Pinout matches Dolby #778 AES input/output card
for CP-650.
Network: Onboard TCP/IQ, compatible with stan-
dard 100Mb Ethernet hardware
Front Panel Controls and Indicators
Power Indicator: Blue LED shows that the unit is
plugged in and AC power is being supplied. The
unit does not have a power on/off switch.
DSP: 24-bit conversion with 32-bit, floating-point
DSP processing.
Aux Inputs: 2 female XLR balanced inputs for
speech reinforcement or announcements. Switch-
able between mic, line, and mic with phantom
power.
Analog Auxiliary Input Gain Range: +20 dB to
–12 dB (add 25 dB for mic setting)
Data Indicator: Amber LED flashes when com-
mands addressed to the DBC Bridge are received.
Input Impedance: 20 kilohms balanced, 10
kilohms unbalanced.
AES/EBU Indicator: Amber LED illuminates when
the unit is switched to AES digital inputs.
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