Crown Audio Network Router Network Bridge User Manual

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  
Accepts 8 inputs (7.1 surround) via one of the  
following formats:  
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  
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  
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  
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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