Question about Performance Teknique ICBM-892 Car Audio Amplifier
I cant stop the whinning noise i have my amp grounded to the frame but it stii does it my power wires are on the oppisite side of the car from my rca jacks how can i stop this and i tried a ground loop isolator and it didnt help
Ok, if it only happens when the engine is running and the noise changes with the gas, that's alternator whine. Alternator whine is caused by the ambient noise in the voltage which is produced by the alternator. Alternators don't make DC current, they make AC current. The AC current is then converted to DC current and then sent to the rest of the car. The noise comes from an imperfect conversion from AC to DC. That noise travels down the power cable to the amp and causes noise in your speakers. This is often called "dirty power". Dirty power can be variations in voltage, inconsistent current, or noise within the voltage. One of the simplest ways to clean up noise in a car stereo system is to use capacitors. If you add a capacitor to your system just before the amplifier's power cable, it will help filter out the noise from the alternator. Start with 1/2 Farad or 1 Farad. That should be plenty to clean up the noise. The capacitors will also have a positive effect on your amplifier's thermal and sound performance, but you may not notice it.
Posted on May 14, 2009
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Posted on Jan 02, 2017
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