Two or More Speakers Do Not Work, Poor Sound Quality

Two or More Speakers Do Not Work (Balance and Fader Contols Adjusted to Mid-Position)

It is unlikely that two speakers would be defective at one time. The most probable fault is in the radio chassis or wiring.

^ Verify balance and fader controls are adjusted to mid-position.
^ Inspect wiring connectors at rear of the radio chassis for proper mating. Verify electrical continuity of wiring between radio chassis connector and the inoperative speaker connector, using an Ohmmeter.
^ If wiring connections are properly mated and the problem persists, remove radio chassis for service.

Poor Sound Quality

^ Experience has shown that rattles and buzzes are caused more often by loose speakers or speaker mountings, speaker grilles or trim panels than by faulty speakers. If buzzes and rattles are the concern, check for tightness of mountings and trim pieces.
^ Distortion can be caused by the speaker, radio chassis or wiring. If the fault is in the radio chassis, both speakers on the same side of the vehicle will exhibit poor quality. Distortion caused by defective wiring is most often accompanied by lower than
normal sound output.
^ Buzzes, rattles or distoned weak sound from package tray speakers are often caused by bent package tray sheet metal around the speaker opening, or missing or loose attaching hardware or speaker covers. Bent sheet metal should be straightened and the speaker re-installed. Loose attaching hardware should be hand-tightened plus approximately one full turn. Be careful not to overtorque hardware as this may bend or deform speaker basket, causing buzzes or distorted sound.

NOTE: Shorted wiring does not always result in a completely dead speaker. If diagnosis indicated problem is associated with speaker or wiring, refer to preceding section for fault identication.

Distorted Rear Speakers, 1983 Continental TSB No. 83-5-5

On a six-speaker sound system, if the instrument panel and door speakers are inoperative, check the instrument panel speaker first.