So I have a 2012 VW Sportwagen that I've installed 10 speakers - 4 6.5", 4 1" tweeters, and 2 4" speakers - in the factory locations. All Alpine S series, hooked up to a 1200W Pioneer amp. It's all hooked up to a Joying Android headunit. Before anyone says anything, yes, I'm aware these Android headunits have a poor reputation around here, and I understand there's a good chance that might be the problem. This is one of the newer units though, supposedly with better preouts. I've seen a video on a group dedicated to these units of someone pushing it to 4.6V with no clipping. Regardless, I want to run through the troubleshooting steps and could use some advice on this noise thing.
Issue is a hissing static-y white noise right from when I turn the car on. Initially it would go away when I set the headunit volume to zero, but now it's just all the time except for when the headunit is off. I've tried some ground loop isolators (because it's quick and easy), didn't solve the problem at all. Next I think I'm going to try grounding the headunit, bought some wire for it. I'm also going to try plugging my phone into the amp to see if the noise goes away. But I want to know what you guys think.
The strange part is the nature of the static. When I turn the headlights on at any point, an additional buzz overlays itself on top of the static. When I turn my turn signal (but only when the engine is on) I can hear the static dip in and out with the pattern of the turn signal. Both the left and right turn signals do it, but the left turn signal makes the static dip in and out more strongly. When I hit the brakes (only when the engine is on) there's also an additional hiss. However, the noise does NOT rise with RPM or volume, which is the confusing part. Either way, the fact that there's interference with my turn signals makes me think that it might be more than my headunit causing the problem.
Issue is a hissing static-y white noise right from when I turn the car on. Initially it would go away when I set the headunit volume to zero, but now it's just all the time except for when the headunit is off. I've tried some ground loop isolators (because it's quick and easy), didn't solve the problem at all. Next I think I'm going to try grounding the headunit, bought some wire for it. I'm also going to try plugging my phone into the amp to see if the noise goes away. But I want to know what you guys think.
The strange part is the nature of the static. When I turn the headlights on at any point, an additional buzz overlays itself on top of the static. When I turn my turn signal (but only when the engine is on) I can hear the static dip in and out with the pattern of the turn signal. Both the left and right turn signals do it, but the left turn signal makes the static dip in and out more strongly. When I hit the brakes (only when the engine is on) there's also an additional hiss. However, the noise does NOT rise with RPM or volume, which is the confusing part. Either way, the fact that there's interference with my turn signals makes me think that it might be more than my headunit causing the problem.
