Question about Phase Linear UPA424CS Car Audio Amplifier
Is it possible that the noise is coming from the positive line from the bat. When I turn the car key to the first positon I hear the radio and it is claer as a bell. Then I turn the key to the second position and the noise starts. Then I start the car and it gets alittle worse. Its coming from the alternator i cna hear that. I have tried 2 spots for grounding. I have changed my grounds my wires and everything else. My RCA plugs are running from the radio straight down the dash under the rug to the amp. There are some vents but really no wires. The amp is a Phase linear upa424. The car is a mountaneer. The speakers I have running from the harness to the amp. Could that be the problem? I have been tring to fix this for a week now on and off. I am not much to ask for help but here I am. Is it possible the noise is coming from the positive from the battery? I have it connected directly to the terminal.
Hear are couple things to try try running your power and (ground) both directly from your battery to the amp and to the receiver .. if this doesn't help try purchasing a noise suppressor and wire your receiver threw this it should solve your problem
Posted on Feb 17, 2009
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Posted on Jan 02, 2017
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