So I got this new Legacy GT right. Well, the stock system is decent, but I wouldn't mind a little more bump. I've got a 12" MM12 in a box sitting in my living room from my WRX.
So, should I just replace the stock speakers, and get some more added bass from that? Put bass blockers on the stock speakers and put the MM12 in the back? Get an JBL BassLink (or Infinity equevalent)?
I cannot replace the stock HU, it's uber integrated into the dash.