Hello Leutchen, Hmm since yesterday my EQ totally spins around. Sometimes the left side goes ne more, sometimes the right side goes ne more. and that’s of course annoying. I guess through the bass, or by the vibration has given up the mind. EQ was installed in the kofferaum. (Yes I know! ) Which EQ or Prozzi would be a good choice now. Pricey? No idea. plenty of times to start from the cheapest (pros and disadvantages) etc. I don’t need LZK, or I already have. So people help me. PS: That makes my F measurement natural for Bobbes, but then I do it again