Do you already get our installation manual? There you can see where we suggest to place the DRC controller incl. step by step explained how to do.Finally received the entire system (USPS lost the first subwoofer and @SiMsound sent a replacement - thank you Bjorn). Got the doors done a couple of weeks ago. Now for the rest. @SiMsound or @acaciolo , can either of you confirm whether the DRC power/bass knob should still be installed even though I'm not installing the standalone bluetooth module?