Question about Kenwood KAC-8401 Car Audio Amplifier

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Kac-8401 buzzing noise

When the car is parked everything is fine, but when i put into gear and start moving there is a loud consist ant buzz while driving. I just don't know how to stop it...... Any ideas ?

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If the buzz is real high pich the faster you go and lowers to a low pich when you slow down then it is you alternator on your engin.
The only way to stop this is to go to an caraudio store and buy a noise filter which will stop the noise. The only bad thing about getting an noise filter is that it will cause the watts on your amp to go down a little bit because the noise filter runs your power source through a box with a step up transformer and a step down transformer. I hope i helped you with your problem

Posted on Jan 26, 2008

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Posted on Jan 02, 2017

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