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Posted on Nov 12, 2009
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I have a Pioneer 5400t amp hooked up to a 10" 400w sub of unknown brand. The system was working perfectly for about a week, then I noticed the sub wasnt working. I blew both 30a fuses on the amp. I replaced them with 2 new 30a fuses. At that point it started to turn on and off whenever it is connected to the sub. the sub is a 4 ohm sub with single voice coil. I have it connect to the power with 8gauge wire, and a 50a fuse. I have a brand new battery and an alternator that is about 1.5 years old. I am getting 13.78 volts at the amp continuously. I tested the remote wire by bridging the power to the remote and it stayed on until i started the headunit. I replaced the amp with the same kind, I used a different sub. I tried both the sub and the amp in a different vehicle and they work fine. My voltage is staying fine, but the power light keeps turning on and off and the sub will only half beat anytime there is a load. What is causing the problem

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  • Master 11,896 Answers
  • Posted on Nov 12, 2009
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Your best bet is to buy a cap. A capacitor is an external battery booster like device. It boost power to amp. The thicker the wire the better. Power and ground. Shorter thicker ground wire the better. Make sure it is not on a painted surface. Scrape down to metal surface!!!!

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