Does any one kno what can cause a car stereo unit to turn on and off when the volume up ?

Question

Does any one kno what can cause a car stereo unit to turn on and off when the volume up ? When Im sitting in my car with out the engine on I can play the radio but when I start to turn the volume up the screen on the radio starts to blinks and jump around and then turns off but when I turn the engine on I can play the radio with out it turning off but sometimes it still turns off and I have too amps one 4 c and on mono does anybody know what it can be?

Answer 1

My guess is that you're draining too much power from your system. You mention that you have a 4 Channel amp AND a mono amp, so you're probably drawing quite a bit of power, and normal car batteries aren't meant to be able to power accessories like that, they're meant to be able to start your car. That "blinking" of the radio is likely because your voltage is dropping below 12v and there isn't enough left to fully light up the display. When you turn your car on, it is essentially running off of your alternator which will give your system roughly 14v to work with, and a lot stronger of a current so it won't dim nearly as easy. Hope that helps! You may look into getting a capacitor and, depending on what type of vehicle it's in - a higher output alternator.