Hey winkychevelle.
Are you still thinking of adding a 8 under your dash?
When you place a sub in a box within a box you will get more bass.
You might be having phase issues.
Have you tried to reverse the phase on the sub?
I'm not sure if you ever heard of Diycable-Anarchy mids?
kevin is thinking of releasing them in 4ohms vs 8ohms that he has now.
you can run them in 2way or 3way setup.Yes they will pound the hell out of your doors.
They are have a nice tonality in the midrange, no cone breakup under 2k, the midbass is very punchy.
you could run them down to 50hz
You need to figure out what tyoe of midbass you like.
I like snappy fast midbass, like Hertz, CDT es line,Seas,H-audio vs Scanspeak.morel,Dynaudio,which are more punchy.
Are you really stuck on fosgate subs?
I mean you can try out Sundown,Fi,Audioque,RE,SSA,or Skar which sound much better then fosgate subs.
A Sundown 8v2 will walk all over fosgate.
I'm running a F.A.S.T. setup,I built kick pods for my 2-8's.
I have them x-over @ 63hp & 300lp in mono.
I'm about to change my setup up again.
I'm looking at running 1-8 under my passsenger dash.
2 markaudio mids with Sb Acoustics tweeters on my dash.
With 2-8v2 when they come out.