I just received my DYI harness for the front and rear speakers. I ordered it on Thanksgiving. The kit came with no directions or tools. I have a Sep 2020 built M3 so no rear speakers. Not sure if it's worth installing the kit after reading this forum. Is activating just the front speakers worth it? Greatly appreciate to hear your thoughts, experiences with the front speakes activation.
So I went back to the installer and he tweaked the amp and set up for me and it’s a little better. I realized all the inactive speakers are actually working. LOL. Still, overall , it sounds pretty good. Kinda notice when I raise the volume above 50 pct , it’s sounds better but not into cranking It up that high. I think , that will be as much as I’ll put into the car for now. LOL. I’m sure adding that 10 inch sub will be huge for you.
I tried 50% volume and it's too loud for my taste. It hurts my ears and gets exhausting after just a minute of hearing. I get tiny more bass setting the fader a little bit to the rear. If you line it up to the headrest rather than front of it. I didn't want to spend more but I already have the sub + amp so might as well hook it up.