Multiple loudspeaker switching circuit - connects amplifiers to loudspeakers in preprogrammable combinations

摘要

The loudspeaker circuit has a control unit and functional unit (23) connected to it. The amplifiers (7) are connected to the functional part, which has sockets (24) for the loudspeakers (1-6) and an adjustable programming unit (20, 21) for defining the wanted combination of loudspeakers. The programming unit can be used to select 1 loudspeaker from amongst X, or combinations of loudspeakers, e.g. in different rooms. Indicators show the setting of the circuit's switches. The switche are relays connected to the functional unit.