Hello dear forum members, Even though there are already several threads to my question I could not find anything suitable for my case even after eternal research. And I bought the Kenwood KSC-SW 11 Subwoofer, because the car could use a bit richer bass, but I am from the old one where you build up the whole trunk anyway I have to keep the installation effort low and to buy me no new radio, especially this one because he bought a HIGH Level connection. I understood this in such a way that I simply “snap” the signal from another speaker in the car and the sub only reproduces the depths? I have now connected the cables for the HIGH Level input with so-called “current thieves” or “vampircles” parallel to the cables of the subwoofers which are standard under the front seats. Now the problem : At the subwoofer something arrives, but only minimal power. That means I feel gra I’ve tried all the settings on the subwoofer and radio… Does anyone have an idea where the mistake might be? Thanks for your answers.