Radio Circuit Operation

Radio Power 

The radio is supplied with power by a fused B+ circuit. The radio uses a discrete ignition feed circuit for power moding.

Radio Grounds 

The vehicle harness provides a ground for the radio circuits. The radio may also be case grounded.

Radio Outputs 

Each of the audio output channel circuits (+) and (-), at the radio have a DC bias voltage that is approximately one half of battery voltage. The audio being played on the system is produced by a varying AC voltage that is centered around the DC bias voltage on the same circuit. The AC voltage is what causes the speaker cone to move and produce sound. The frequency (Hz) of the AC voltage signal is directly related to the frequency of the input (audio source playing) to the audio system. Both the DC bias voltage and the AC voltage signals are needed for the audio system to properly produce sound.