Approach for controlling audio signals in remote location

For use in a facility with a plurality of audio zones receiving at least one audio signal from a remotely-located audio distribution controller, an arrangement for controlling audio at a user-controlled speaker load located in at least one of the audio zones, comprising:

• an isolation circuit for generating at least one transformed audio signal in response to receiving said at least one audio signal, wherein the isolation circuit is adapted to provide an impedance-matched termination for said at least one audio signal and to set one of a number of impedance-matching circuits wherein each impedance-matching circuit is adapted to provide a different amount of electrical power to the speaker load;
• a speaker load circuit for delivering, in response to said at least one transformed audio signal, audible signals in the at least one of the audio zones;
• a user-input device coupled to provide input commands;
• and
• an audio control unit having a microprocessor adapted to control the delivery of the audible signals in response to the input commands.

For use in a facility with a plurality of audio zones receiving at least one audio signal from a remotely-located audio distribution controller, an arrangement for controlling audio at a user-controlled speaker load located in at least one of the audio zones, comprising:

• means for generating at least one transformed audio signal in response to receiving said at least one audio signal, for providing an impedance-matched termination for said at least one audio signal, and for setting one of a number of impedance-matching circuits wherein each impedance-matching circuit is adapted to provide a different amount of electrical power to the speaker load;
• a speaker load circuit for delivering, in response to said at least one transformed audio signal, audible signals in the at least one of the audio zones;
• user-input means for providing input commands;
• and
• an audio control unit having a microprocessor adapted to control the delivery of the audible signals in response to the input commands.