The conducted researches in the field of development of intellectual halls of meetings have shown presence of a number of shortcomings at them. For the purpose of their elimination the concept of the intellectual hall of meetings in which various subsystems under control of the general control unit are realized has been offered. An important component of this concept is the notification subsystem realizing functions of speech reporting of information to users. As the mechanism of the notification the optimum synthesizer of the speech chosen proceeding from criteria of availability, number of votes, customizability and type of a program kernel is used. Direct transfer of the synthesized speech requires existence of loudspeakers. For the effective and qualitative notification it is required to choose concrete samples of technical devices of the notification. In this regard there is a problem of calculation of necessary number of loudspeakers and their power and also the choice of a concrete sample from available on sale. The first part of a problem is solved by use of the known methods of calculation of number of loudspeakers and the required power. For the solution of the second part it is necessary to mark out the most essential criteria for comparison of concrete samples and, using the known method of comparison, to reveal the optimum technical device.