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| H |
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| O |
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| O |
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| T |
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| I |
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| N |
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| G |
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Symptom | Diagnosis |
| Remedy |
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Engine Noise | Noise is radiating into RCA | Check connections, run the |
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| signal cable. |
| RCA cables on a different route |
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| away from sources of high |
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| current. |
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| Bad component in the sig- | Check connections, bypass |
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| nal chain. |
| additional components (cross- |
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| overs and equalizers) between |
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| the source unit and the ampli- |
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| fier. Connect one component |
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| at a time to determine the |
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| culprit. Repair or replace com- |
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| ponents as necessary. |
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| Noise is radiating | into | Disconnect existing speakers |
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| speaker cables. |
| and connect a test speaker to |
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| the output terminals of the |
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| amplifier. If noise is gone, re- |
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| route the speaker cables away |
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| from sources of high voltage. |
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| Multiple grounds in | the | Check ground connections and |
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| audio system. |
| connect amplifiers, signal pro- |
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| cessors, and other components |
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| to a central location or try a |
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| different grounding point on |
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| the chassis. |
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| Ground loop between source | Check connections, disconnect |
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| unit and antenna. |
| antenna from source unit. If |
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| noise is gone, install an an- |
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| tenna ground loop isolator. |
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• If noise persists, see your Authorized Rockford Fosgate Dealer.
– 28 –
