Speaker system. Power amplifier

Speaker system

DESCRIPTION

STANDARD

The standard equipment speaker system includes speakers in four locations. One full-range 16.5 centimeter (6.5 inch) diameter speaker is located in each front door. There is also one full-range 16.5 centimeter (6.5 inch) diameter speaker located in each rear door.

PREMIUM

The optional premium speaker system features eight Infinity model speakers in six locations. Each of the standard speakers in the front doors is replaced with Infinity model speakers, and an additional 6.9 centimeter (2.75 inch) diameter Infinity dome tweeter is mounted high in the front door trim panels panels.

The standard speakers in the rear doors are each replaced with an Infinity 16.5 centimeter (6.5 inch) diameter coaxial unit. The premium speaker system also includes an additional Infinity power amplifier.

The total available power of the premium speaker system is about 100 watts.

OPERATION

STANDARD

Each of the four full-range speakers used in the standard speaker system is driven by the amplifier that is integral to the factory-installed radio receiver.

For complete circuit diagrams, refer to Audio System in the Contents of Group 8W - Wiring Diagrams.

PREMIUM

The eight Infinity speakers used in the premium speaker system are all driven by the radio receiver through an Infinity power amplifier. For complete circuit diagrams, refer to Audio System in the Contents of Group 8W - Wiring Diagrams.

Power amplifier

DESCRIPTION

Models equipped with the Infinity premium speaker package have a separate power amplifier unit. This power amplifier is rated at 100 watts output.

The power amplifier unit is mounted to the right cowl side inner panel under the passenger side end of the instrument panel. The power amplifier unit can be accessed for service by removing the trim from the right cowl side inner panel.

The power amplifier unit should be checked if there is no sound output noted from the speakers.

For diagnosis of the power amplifier, refer to Speaker in the Diagnosis and Testing section of this group. The power amplifier cannot be repaired or adjusted and, if faulty or damaged, the unit must be replaced.

OPERATION

The power amplifier receives fused battery current from a fuse in the Junction Block (JB) at all times.

The internal circuitry of the power amplifier switches the amplifier on based upon a fused 12 volt output signal that is received from the radio receiver whenever the radio is turned on. The power amplifier receives the sound signal inputs for four speaker channels from the radio receiver, then sends the amplified speaker outputs for each of those channels to the eight speakers. For complete circuit diagrams, refer to Audio System in the Contents of Group 8W - Wiring Diagrams.