Hey everyone I added JBL GTO607c's up front and JBL GTO607's in the back amped with an alpine 4 chan. I like the speakers a lot they are very clear and I can crank them up. The thing they are lacking bass, they have barely any at all. My question is, if I add a 12" type r or a JL 12w3 to the trunk how much better will my setup sound? How did your systems sound before you added a sub? Thanks!
Edit: is it normal to have such minimal bass with just 4 6.5" speakers?