Question about Hifonics TXi4408 Car Amp

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I accidently shorted a speaker output to the frame with it on. Since this happened, I have a whine that is constant and increases with engine rev. The rca's are isolated from voltage, and the system sounded fine before this happened.

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Sounds like a one of your capacitors in the output stage of the amp, might have been damaged. You could also try a resonator on the 12 volt supply coming from the battery.

Posted on Sep 12, 2009

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1 Answer

Engine whine


You're hearing whine from the alternator as it charges the battery. You could reduce it by turning the input level down on the amp, or by adjusting the filter on the high end. You can also buy a whine filter kit.

One last thing... you may have blown one of the diodes in the Alternator itself when you shorted the speaker wire. It would still work and charge the battery, but would not be able to filter the whine like it should.

Hope that helps...

Geno

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