Hi together, I have a problem with my sound system. JBL Stage 1200D 600W Rms 1200 Peak 1 channel Crunch GTI500 with 1500 Watt Peak 750W Rms with 2 ohms car: Peugeot 206+ Radio is a cheap one from Amazone which is actually really top power cable is installed on the driver’s side. Chinch cable is on the passenger side. On the passenger side, however, other cables run from factory long. + is connected to the connection between fuse box and battery since k a connection is on the battery. – is mounted on the rear bench bracket with tooth disc. Problem: I turn on the system and turn on the power stage (even at very low rotation) you have a constant hum on the subwoofer all the louder you adjust the power stage it becomes all the louder. It is durable but annoying. It is not a capacitor or similar installed. Would be happy about an answer thank you for the time you take LG Vincent