Bosch LBB 4404 CobraNet Interface, Charcoal with Silver

CobraNet, developed by Peak Audio, is a network protocol for real-time uncompressed digital audio distribution over industry standard 100Base-T Ethernet networks. Typical applications are room coupling and audio distribution over long distances. CobraNet audio channels can be configured as inputs to a Praesideo system, where they can be routed permanently or conditionally to any of the zones or audio outputs. The routing conditions are configured using the configuration software. Calls and background music (BGM) sources can be routed to CobraNet channels.

Four CobraNet audio inputs
Four CobraNet audio outputs
Eight supervised control inputs and five control outputs
Redundant Praesideo network connection
Redundant CobraNet network connection

Digital audio data is directly converted between an audio system and CobraNet, with no other audio processing than sample rate conversion. Control inputs and outputs are provided for external interfacing. The equipment can be used free-standing (tabletop) or in a 19" rack. CobraNet is a registered trademark of Peak Audio, a Division of Cirrus Logic, Inc.

Functions
The Praesideo CobraNet Interface can simultaneously interface up to four digital audio channels from CobraNet into an audio system and up to four audio channels from an audio system into a CobraNet network. This includes converting between the 44.1 kHz sample rate used by Praesideo and the 48 kHz sample rate that CobraNet uses, as well as conserving volume levels. It can also route audio channels between itself and other CobraNet Interfaces, in the same or in other audio system networks or to third party CobraNet units.

Only audio channels are routed via the interface, not control data. This means that if units are used to link multiple systems, a PC master must always access the network controllers through their open interfaces for control purposes. The eight control inputs are freely programmable for system actions and priorities can be assigned to these inputs. Five control outputs are freely programmable for faults and call-related actions. Control inputs can also be programmed for momentary or toggle operation using the configuration software.

Each control input has the ability to monitor the attached line for open and short-circuits. The 2x 16-character display and the rotary control enable local status enquiries. The display shows the VU-meter reading when the audio monitoring mode is active. Audio can be monitored by headphone. The interface supports redundant network cabling of both an audio system and CobraNet networks. It gets its power from the network controller via the network cable. The unit is self-monitoring and continually reports its status to the network controller.

Controls and indicators
2x 16 character LCD status display
Rotary/push control for menu control and headphone volume

Interconnections
Two optical network connections
Two RJ45 Ethernet connectors for the CobraNet
Eight control inputs to enable audio inputs and audio outputs
Five control outputs to indicate channel engaged state
One headphone output 3.5mm (0.14") stereo