• An amplituner P8111 or P8121, can operate as a "master" regulating and controlling the sound signal in an entire installation. Various amplifiers with a different number of loudspeakers can also be installed, depending on the noise level or the surface area.
  
  
• With the remote control P4803 the entire installation can be switched on/off, as well as adjusting the sound level and all the other parameters (radio station tuning, bass, and treble, etc.). This type of installation is recommended when it is a same area or open area, such a floor in shops, office areas, etc.
  

Regarding area 3 this could be a larger sales area where excessive sound is not required. In area 3 a stereo amplifier P6621 is used to better the power in profit its two output lines.

Apart an announcements desk has been installed allowing placing a general call to all the installation.

• With the integrated system "easy series" we may have instrallations in several zones connected one to the other. This type of installation is usually done when we want to send generall or by zones calls to the whole of the installation; also used when we want to insert a second channel to the different zones.