The MAPP Online system generates accurate predictions of the performance of Meyer Sound loudspeakers in a given configuration within a venue. The system, which is available free to qualified users, employs a graphical Java applet running on the system designer's laptop or other computer in conjunction with a sophisticated modelling program running on a high-powered server located at Meyer Sound's headquarters in Berkeley, California.

The user can define attributes of a venue (walls, floor, surface composition, etc.), then specify the choice and configuration of loudspeakers. Once the scenario is defined and a prediction requested, the user's computer transmits parameter data describing the scenario over the Internet to the server, which then draws on a database of loudspeaker profiles and performs the calculations. In a few seconds, the server returns a colour image to the user's computer, showing how the loudspeakers will perform and interact under the stated conditions. Coverage, frequency response at any given spot in the venue and much other data are instantly available.

An additional feature is that by housing the loudspeaker database at the company's headquarters makes it a simple matter for data to be added or updated without the user needing to do any more than, at most, downloading an update to the small Java applet. Further, the system insures that all users have the latest version of the program by detecting the version in use when a prediction is requested and automatically downloading an update, if needed. Not only does this mean that every user is up to date, it simplifies support by eliminating the possibility of multiple versions being in the field.