Dreams/goals for my system

[reedal]

So with my measurements I took, I've got about 19-ish cubic feet gross for an enclosure under the window line. I'll have to re measure for sure, but what I wrote down was 48 inches wide, 40 long, 20 tall. 2003 Tahoe behind the second row seating. I'd like the enclosure to be subs up port back. I have two soundqubed hds312 D2's, planning on getting two more, maybe four one day. But I'm no good at the enclosure designing process. Could I fit 6 with those dimensions? Daily driver, music only, no comp. powered by a single Q1-3500. Just tossing around ideas. No walls, all under the window line. What are some of you guys' thoughts?

[firebirdude]

6? Not and have proper port area. Not to mention you'd have no room for the amps and batts you're gonna need to push em.

4? No problem. You might even think about selling those and stepping up to 4 HDC3's. If you're gonna do 4.... do it right, ya know?

[White Lightning]

6 12s maybe ... but not 6 15s below the windowline.

With the correct tune, amp and battery power, I really like the output of a pair of 15s facing rear with ports rear ...

Just saying

[reedal]

It's just thoughts. I like my two twelves, not sure where you got 15's from. Don't want to change to fifteens or any other sub size. Just thoughts of more 12's maybe one day after everything is paid off. If I do get more, it would be more of the hds312's, not going to buy the HDC's. As for my power, my 3500 and 270A singer 6 phase hairpin and my back battery are good, plus getting a dual alt bracket to throw the stock alt back in soon too. I'll have the amperage supply for the 4300w @ 1ohm that the amp is rated for by soundqubed in a perfect world. I do intend to get two more so I can wire to 1ohm. Just curious if 6 would be able to work with 19 cubes. Every box design I've seen recommended for two of these subs suggests 4.5 to 5 cubes net, which with displacements added, multiplied by 3 would be 15 cubes net, around 20 gross. I'll play with the idea in winISD. And those dimensions already have amp/battery rack dimensions taken for account.