a yes what would be a louder setup between 2 15 RE SXs or 2 18 RE Sxs? and what would sound louder from far way? the 18s i know would be moving more air which is what i want but would that make more lows then high bass notes? I want a setup that you can feel in your back, i am saying this from coming from 2 kicker l7 12s on 1500 watts which was nice setup, but you couldnt really feel them it was just to the point where you could hear ringing in your ears alittle, and i never could hear the subs from far way, like even in the front of my truck you couldnt really hear them, but inside the cab they sounded loud, i am wanting a setup that can be heard in front of the vehicle like a ways away, also how can i get the subs to be shaking windows from like 20 feet away and setting off car alarms in parking garages, i seen some on youtube, is it in the design of the box like lower tuning? i just got a zx2500.1 kicker so it will be 1000 watts more powerful, i just am deciding on which subs to buy 15s or 18s, thanks
