Tecpro is launching several significant additions to its range of intercom products. New loudspeaker station designs are among the products being given their UK debut on stand 85 at the ABTT Theatre Show.
Tecpro is a 'two wire' or, as it is sometimes known, 'party-line' or 'ring' system which enables a number of people to take part in the same conversation. Each participant can hear all other participants on the same circuit while being able to talk to them simultaneously, so a full 'duplex' conversation can take place - similar to a telephone system.
The major applications for these systems are in the theatre, conference, live performance and broadcast markets, though new applications are constantly emerging.
A basic Tecpro communication system would comprise a power supply and two or more outstations or beltpacks. An outstation may be wall mounted, free-standing or mounted in a rack. It will usually have a built-in loudspeaker and possibly a microphone. Beltpacks are intended for personal use and work only with a headset. Outstations and beltpacks connect together with two core screened microphone cable which carries system power, audio, and various control signals. Most have a 3-pin XLR input and output and can be simply daisy-chained together. Alternatively interconnection can radiate out from a central, passive splitter. A combination of both methods is often used.
More complex systems may use a master station which has two in-built power supplies and offers two independent communication circuits, A and B. Participants in a conversation on circuit A cannot communicate with those on circuit B (unless the two circuits are linked at the Master Station). However the person operating the master station can communicate with circuits A and B separately or together.