Bosch PRAESENSA, Installation Manual

Page: 17 / 194

PRAESENSA System introduction | en 17
Bosch Security Systems B.V. Installation manual 2019.11 | V1.00 |
Furthermore, this is a scalable solution compared to static channels, which are limited to
the number of interconnections that can be handled by the device that contains the audio
matrix. All OMNEO audio streams are set up as multicast, directly from the source (the
transmitting device, such as a call station) to the destinations (the receiving devices, such
as amplifier channels). This connection is setup by the system controller using OCA
(AES70). The audio matrix is in the network itself, not in a single unit. In this way, there is
no real limitation on the number of source and destination devices. The only limitation is
on the number of simultaneous (different) audio streams, which is above 100 and more
than enough for even the busiest applications.
– Multifunction power supplies have an integrated battery charger for single 12 V battery
based backup power, facilitating easy system decentralization. Amplifiers can be placed
closer to the loudspeakers, reducing loudspeaker cabling costs, which is especially
advantageous in case of expensive fire-resistant loudspeaker cables.
– DSP power is available in all call stations and amplifiers, so DSP power grows with every
device added to the system.
– Every zone has its own amplifier channel for dedicated audio content. Users can make
personal music and volume selections, while announcement levels are not affected and
loudspeaker line supervision is not impaired. The amplifier’s built‑in DSP allows the
sound in each zone to be adjusted to the needs and taste of the audience in that area.
– The complexities of traditional system planning make little room for error or last‑minute
changes. With PRAESENSA however, flexibility is built‑in, allowing for an agile and
adaptive approach to planning. PRAESENSA allows for future changes to the areas
covered by the system, with minimal or no equipment changes. Thus, initial planning is
less sensitive to later small changes, which could impact profitability.