Hello dear community !! I am happy to make my first contribution here.. So far I have only been following it as a guest and have always looked at everything I have the following problem.. I really don’t know any more.. I have a BMW F20 built in 2013 with Normal Sound System. I have a subwoofer ” Audio System BR 12 Plus ” and an amplifier of Audio System R195.2. I branched the sound off from the front subwoofer and all with a Hifonics capacitor with 1 Farad connected. And I really don’t know any more.. The subwoofer doesn’t get dry enough. The bass is unclean. He plays sounds that shouldn’t be. He sometimes doesn’t rummage so nicely with some sounds. I really don’t know if it’s due to the settings of the amplifier.. I need your help. I insert an image and there are the settings of the amplifier.. I’ve already tried so much.. I’m Ratlos MFG faabrii13