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Digital Public Address SystemsCommercial Sound System For Public Address, Paging and Evacuation 
At the heart of the system is the VADIS frame. This frame is loaded with proprietary analog and / or digital inputs, bus outputs, DSP and other specialty cards based on the system requirements. Control for the VADIS frame and the respective cards contained within the frame are provided by an internal controller based on embedded MS WindowsXP running the Varizone VADIS control software. DSS-Bus A fully digital bus structure (DSS-Bus) distributes uncompressed digital audio data from one or many VADIS frames to an unlimited number of remote amplifier modules (PAMs) using either CAT5 or traditional four conductor stranded twisted pair cable. Each PAM is a 2-channel device capable of powering (4) 8 Ohm loudspeakers. The bus interconnect also supplies all active components on the line with DC power. To refresh DC voltage and the digital bus signal, power bridges are strategically placed at points throughout the bus interconnect and connected to 220VAC. 
 Octo-Bus  In order to connect or distribute analogue audio signals from/to remote locations Klotz Digital has developed a specific, bidirectional digital audio bus OCTO-BUS. This bus is able to carry via a CAT5 cable 8 audio channels bidirectional @ 16 Bit resolution or 4 channels @ 24 Bit resolution inclusive of control data respectively. Front end of this bus can be either a paging station, 4 channel input module (switchable between mic/line) or 4 channel output modules. Cable distances up to 200 meters can be interconnected in this manner. For longer distances Klotz Digital´s product line offers fibre optics connections with 64 audio channels per fibre core.  VARIZONE is a technology suitable for small, medium and large solutions. Depending on the application 3 different sizes of controller (frames) can be used:
or visit the website of US VARIZONE distributor Atlassound for an animated VARIZONE presentation. Moodmixer for Background Music  Moodmixer is a software package that plays background music as per schedule or desire. The software installed on a central computer connected to the PA system creates a powerful hard disk audio player that fully automates the scheduling and mixing of your music or pre recorded announcements. This software integrates the complete set of audio automation and signal processing features which have been used for nearly 20 years in the professional radio broadcast industry. The system can drive up to 8 different music channels simultaneously. By using off-the-shelf computer technology, this professional background music and announcement solution is affordable for small to large businesses. Moodmixer is an icredible tool for for places where microcasting is desired. It can even produce additional revenue which comes on top of any turnover generated by th standard business. The function at a glance:
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