my headunit has the feature for HPF from 50,80,100,120,150,220hz should i set it to the highest since it's for HPF?
also for my LPF should i set it to 50hz for my subwoofer?
update: i grounded the rca inputs in the back of the HU (front,Rear&sub) and 80% of the noise went away. The whining noise is tolerable but still there. Any other way i can get it out 100 percent ? What if i do the same thing on the rca inputs on the Amps? would it work?
I'm getting a whine noise when i have the car key either in the On position or when the car is On. It's coming out of my speakers and when i turned the headlights on, i can hear the headlight (HID) charging through my speakers.
Only thing i have done was changed my Pioneer HU to a Kenwood and...