Hello!!! Can you just put a woofer around wrong or do you have to pay attention to certain things???What is the difference, if instead of the membrane the magnet looks out of the box??? Did you see that some place the woofer “wrong” around with their trunk fittings… Could I also do this in a Corsa B with 2 Rockford Fosgate Woofers or can’t do that, are the only ones suitable for really closed housings… Hope you can help me is very urgent and weighty ig… nice evening, all of you out there C-F