5cu ft sealed enclosure

I can fit a 5cu ft box sealed in my car. Do you think I should do that? or should I do like a 2.5 vented? Remember I have hifonic 12d4's and the xplod. You tell me.

Thanks.

 

Just bought one to see if it was good. Same price if I buy separate. I can buy the other hifonics anytime but I wanna get the box built first and idk what to do...

 

Ok .. what do you think is better... 2 12"s in a vented 2.5-4cu ft box or 2 12"s in a closed 2.5-5cu ft box? And the twelves would obviously be 2 hifonics 12d4s

just another question here. When you calculate volume do you subtract the displacement of the driver? I was watching a video of pros making custom boxes and they didn't because they said the recommended volume already accounted for the driver displacement...

 

I can build that. But can I add another sub and not affect anything?

 

OH well I have 2 subs hooked up and ready to go soundin good just need a good duel box.

 

Or should I just do a 1cu ft sealed box for the xplod and that box (hopefully 2.5 cu ft ported...)... so have 2 seperate boxes? and just keep my (1) xplod and (1) hifonics goin and don't buy another hifonics..?

 

Even if it's two totally separate enclosures?

 

Why not???

 

I kind of figured that. Which is why I went ahead and tried to design a box for 2 12" Hifonics 12D4's.
Click the link to get the Google SketchUp Design.
I don't know if I put the pieces together right.
I think your supposed to make the bigger ones on top of the smaller ones.
If I did it wrong let me know. Here's a pic:



This box is designed to the manufacturer's recommended specifications:
VENTED BOX DESIGNS (ROUND PORT)
For Standard Tight Bass:
Box volume: 1.75 Cubic Feet
Fb: 40 Hz
Port Size (inside diameter): 3 Inches
Port Length: 5 Inches
F3: 39 Hz

I just made it for (2) instead of (1).
It's probably not right but that's what you guys are for. Your the experts
Thanks for all your help!

 

Ya I'm hoping Ranger or AZN or someone can help me out on this one. 40Hz is kinda high but it's a lot lower than what I'm getting now so it's okay I guess.