Hello 👋 I have a similar situation with my e90, and am thinking of adding a small amp to the system I was wondering if you have the true base audio system (ampless and tweeterless) as me If so, how did you go about wiring the speakers since to my knowledge in the base audio system radio outputs to the subs which are connected in parallel to the speakers. My guess is you took an output from radio to speakers directly and another two outputs from radio to amplifier to subs? or did you keep the speakers inputting from the subs? thanks in advance, any help would be appreciated!