Hello Leutz I have a Vectra a stepback and in the trunk a bandpass. Problem is that in the trunk the bear steps in the chain shirt, but I don’t get anything from the party in the interior. I already opened the ski bag and put the box with the opening in front of the back bench, so that the BP can play through the ski bag opening. It’s actually fine. But on the one hand it doesn’t look so doll and on the other hand the box just takes away too much space in the trunk. If ic h to meet I have to throw everything on the back bench because the trunk is already half full. That’s why I would like to plan a free-air behind the ski bag opening with an MDF record. I know Free-Air is nothing half and nothing whole. I also don’t want to participate in the Emma Sound contest. Just a little bass with little space loss should be there. Next problem is that my power amplifier (Axton 5-channel) only provides 155Wrms at 4Ohm. No, I want k Another final stage. At google I have often hit the ZS 12 from Hifonics. But is it too expensive for me with about 140€. Meien questions: Should I get the idea straight out of my head? Is there comparable chassis for cheaper? Or is there perhaps even a better alternative to a meienr idea?