All Speaker Test

You may use the combination tone if you are familiar with the dialogue on the beginning of the tape. The combination tone is a blend of all three test frequencies. When you use the combination tone, you may hear three distinct sounds. Listen to these sounds. By comparing the sounds in the left front speakers, you will be able to determine if there is a speaker problem.

Always compare the front speakers to the front speakers. Always compare the rear speakers to the rear speakers. Do not compare the front speakers to the rear speakers. The rear speakers could be different from the front speakers. If the rear speakers are the same as the front speakers, the rear speakers could have a different mounting environment. A different mounting environment may cause the rear speakers to sound different from the front speakers.

Use the combination tone for the following speaker problems:
- Distorted sound
- No sound

While using the combination tone, make comparative voltage measurements on the speaker terminal. Ensure that the following controls are in the detent position:
- The fade control
- The balance control

Use the voltage measurements in order to diagnose one of the following components:
- The speaker
- The amplifier