Question about Volfenhag ZX-8200 Car Audio Amplifier
I got this Volfenhag ZX-8200 a few years ago and has always worked fine until a few months ago. When I turn up the power to make the bass hit hard it goes out and the protection light comes on. That is when the engine is running.
However, when just the radio is on (engine is off), the amp runs fine and I don't understand why that is. I know the volts going to the amp goes from 12 V (engine off) to 14 V (engine on) so that is my only guess. Do you know what might be the problem? Is the engine consuming to much power when it is on?
It's most likely that the over-current protection is tripping at high power. At lower voltage, the amplifier can't produce as much output power and therefore can't produce enough current to trip the protection circuit.
You need to check your speakers to make sure that they are not shorted. With an ohm meter, the resistance across the voice coil shouldn't read any less than ~90% of the rated impedance.
If the speakers and the wiring are OK, the amp may have an internal fault causing the amp to go into protection.
Let me know if you have any other questions.
Posted on Aug 13, 2008
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Posted on Jan 02, 2017
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