Need help with ported box design...

 

New member
Username: Fullergoku

North Carolina United States

Post Number: 1
Registered: Sep-05
I'm thinking of purchasing either a DD 9512 or DD 3512 but I've never built a ported box. The space I have is 28w x 25H x 9.75D and I want to tune the box to 30 can some one help me with the port size and length??
 

New member
Username: Fullergoku

North Carolina United States

Post Number: 2
Registered: Sep-05
bump!!!!
 

Silver Member
Username: Shawnomak

Sask Canada

Post Number: 289
Registered: May-05
will that be a slot port or round?
 

New member
Username: Fullergoku

North Carolina United States

Post Number: 3
Registered: Sep-05
I'm willing to try either......which is the simpliest to do?
 

Gold Member
Username: 54danny54

Betsy layne, Kentucky..GO... USA duh

Post Number: 2464
Registered: Nov-04
round is easier
 

Gold Member
Username: 54danny54

Betsy layne, Kentucky..GO... USA duh

Post Number: 2465
Registered: Nov-04
ur gonna need alot more space then that man... thats isnt much room at all. either u will need more space or a different woofer
 

New member
Username: Fullergoku

North Carolina United States

Post Number: 4
Registered: Sep-05
That isn't enough room for 9512 or 3512?? It's right at 3 cubs before sub displacement. On their website I thnk I remember them saying anything over 2 cubic ft was fine. How would this effect the sub in a 2.75 cubic ft. box??
 

Silver Member
Username: Shawnomak

Sask Canada

Post Number: 292
Registered: May-05
Here's a couple sites I use.

12 Volt:
http://www.the12volt.com/caraudio/boxcalcs.asp

bcae1:
http://www.bcae1.com/

Once you decide on a sub and box volume, it's easy from there. I built a round ported box with 4" pvc but it kinda whistles a bit so as soon as I get another sheet of mdf, I have a slot port box designed and ready to build. If you go round port, make sure you have enough port area.
 

Silver Member
Username: Matt12490

Benicia, California USA

Post Number: 930
Registered: May-05
Shawn are your ports flared or not? 4" round ports should be fine and not create whistlin with 12" subs unless maybe its 1 port for your 2 subs. I think rovin has 3" for his 12's and no whistle.
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