12w7 Enclosure
|
Bronze Member Username: Allstar71Jefferson, Ga Post Number: 18 Registered: Jun-07 | I designed this box...how does it look? Is it ok to have 2 vents like this? 3.685 ft^3 tuned to 32.43hz I calculated it with winisd. Designed it on Autocad... There have been a couple of changes since I printed these I have increased the ports to 12" long instead of 10 which dropped the tuning and the volume of the enclosure. The box is 36" long by 13.5" high.     |
|
Gold Member Username: Adam_sPost Number: 1533 Registered: Aug-04 | Yes it is fine to have two ports like that. How much port area do you have?? |
|
Bronze Member Username: Allstar71Jefferson, Ga Post Number: 19 Registered: Jun-07 | inside port volume is .2777777 ft^3 volume in the box is .3763754 ft^3 |
|
Gold Member Username: Adam_sPost Number: 1535 Registered: Aug-04 | Umm....OK what are the port dimensions? |
|
Bronze Member Username: Allstar71Jefferson, Ga Post Number: 20 Registered: Jun-07 | the ports are both 2"x10"x12" interrior (2*10*12=240/1728)=.138888 ft^3 each the internal volume of the box -sub and port is 3.685 ft^3 |
|
Gold Member Username: Adam_sPost Number: 1536 Registered: Aug-04 | Your tuning on that box is not correct, and that box is pretty big for a single 12. Try aiming for around 2.5 cuft. |
|
Bronze Member Username: Allstar71Jefferson, Ga Post Number: 21 Registered: Jun-07 | I am using winisd...what program should I use? or what site can I get my port lengths? |
|
Gold Member Username: Adam_sPost Number: 1537 Registered: Aug-04 | I think the problem that you had when calculating your ports was that you calculated it out for one port and then you just cut the port length in half and then made 2 ports....correct? |
|
Gold Member Username: Adam_sPost Number: 1538 Registered: Aug-04 | This is a good site for calculating ports. http://www.carstereo.com/help/Articles.cfm?id=31 |
|
Bronze Member Username: Allstar71Jefferson, Ga Post Number: 22 Registered: Jun-07 | yeah, so I need 24 inches for each port not a single port correct? |
|
Gold Member Username: Adam_sPost Number: 1539 Registered: Aug-04 | Yes. I would recommend designing a box that is 2.5 cuft after sub and port displacement though. 3.6 cuft is pretty big for a single 12. I think it would perform a lot better in a 2.5 cuft box. JMO |
|
Bronze Member Username: Allstar71Jefferson, Ga Post Number: 23 Registered: Jun-07 | I put the numbers into that site you gave me and the numbers are completely different than what winisd is giving me...which ones are accurate? |
Main Forums
Today's Posts- Home Audio Forum
- Home Video Forum
- Home Theater Forum
- Car Audio Forum
- Accessories Forum
- All Forum Topics