Audio Amplifier

WARNING: This page is about a different car, the 2007 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.

The purpose of an audio amplifier is to increase the power of a voltage or current signal. The output signal of an amplifier may consist of the same frequencies as the input signal or it may consist of only a portion of the input frequencies, as in the case of a subwoofer or a mid-range amplifier.

Power is supplied to the audio amplifier via the RADIO/AMPLIFIER fuse in the IP fuse Block. Ground is provided to the amplifier via G202. When the radio is turned on, and an amplifier is detected via the amplifier present signal, the radio sends a voltage signal to the audio amplifier via the antenna enable circuit. This circuit enables the audio amplifier to amplify the speaker output circuits from the radio. The audio amplifier sends the speaker output signals to drive the appropriate speakers.