With me, the bass is still set out for a short time at higher levels (2-3 sec.) and goes on again. If I don’t turn more quietly, it always goes on like this. It’s not at the ground point and there is no short circuit. I have a different “theory”. Can it be that my original battery (it’s sitting in the trunk but it’s not the truth) is simply too slow? Because with long-drawn basses I can turn as loud as I want, nothing happens. Bass test songs or even sine tones I can turn so loud until the whole car snaps and vibrates. With songs like Flat Beat or with Prodigy my whole body vibrates. But with fast basses (as example e.g. Friends of Scooter) the power amplifier runs out quite early. Therefore, I think that the original battery may give off enough power (at least so much that the power amplifier does not run out), but that is not fast enough with fast basses. my bass section looks like this: Eton 5402 2 x Earthquake DBX-12DR Silvercap sufficiently dimensioned cables I already have a Maxxima at home, but I haven’t got to install it yet… Diddy