Help designing box for Obsidian V3's

[Da64u 10+ year member]

I purchased 2 12" Obsidian V3's and I'd like to build a ported box 2 cubic feet per sub tuned to 33 HZ.

Recommended enclosure info:

Ported ~ 1.75 to 2 ft^3 @ 32 to 35 Hz

Anyone use Obsidians before and know the kind of boxes they like?

I was just going to use the RE box tool to make things simple but I'm unsure of port surface area and length.

The only info they provide is:

http://www.stereointegrity.com/images/Obsidian/Technical/Recommended%20Port%20Surface%20Areas.pdf

Which doesn't make much sense, I don't think they are very clear in what they are trying to say.

Can someone give me some tips on filling out the blanks?

RE AUDIO - Box Calculator

I was starting with 33wx14hx22d but I'm unsure of square port width and square port width 2.

Thanks..

Click to read more...

 

[Da64u 10+ year member]

Bump

 

[Da64u 10+ year member]

Please help

 

[bgowdy 5,000+ posts]

Please help

2 cubes net per sub should be good

 

[NASTY08IMPALA 5,000+ posts]

Please help

Download torres calculator ...re one blowwws

 

[Da64u 10+ year member]

Download torres calculator ...re one blowwws

Either calculator is fine by me, but I just don't know jack when it comes to ports. I just know what size I need the box, and that I'd like to tune to 32-33HZ no more than 2 cubes per sub after displacment. Just don't know how long, and wide to make the ports and what the surface area is supposed to be..

 

[NASTY08IMPALA 5,000+ posts]

Either calculator is fine by me, but I just don't know jack when it comes to ports. I just know what size I need the box, and that I'd like to tune to 32-33HZ no more than 2 cubes per sub after displacment. Just don't know how long, and wide to make the ports and what the surface area is supposed to be..

Are you using a 4"aero?

 

[NASTY08IMPALA 5,000+ posts]

If so a single 4" aero isnt enough for a pair of 12s ..id use a 6"

 

[SounDrive Pro Seller]

Either calculator is fine by me, but I just don't know jack when it comes to ports. I just know what size I need the box, and that I'd like to tune to 32-33HZ no more than 2 cubes per sub after displacment. Just don't know how long, and wide to make the ports and what the surface area is supposed to be..

13-16 square inches per cube for a slot port.. 8-11 is usually good enough for an aero. Port per cube isn't the best way to calculate port area, but it will get the job done.

 

[NASTY08IMPALA 5,000+ posts]

13-16 square inches per cube for a slot port.. 8-11 is usually good enough for an aero. Port per cube isn't the best way to calculate port area, but it will get the job done.

No but i wouldnt run a 4" aero id use a 6" at least or 2 4"

 

[Da64u 10+ year member]

No but i wouldnt run a 4" aero id use a 6" at least or 2 4"

This is what ive come up with. Using 2 4" aero ports. Any feedback?

 

[Dmac1991]

what amp are you using to push the subs?

anywhere from 3.5 - 4 net tuned to 32-35hz would do fine

Also I'd use 1 6" aero vs 2 4" for efficiency purposes

 

[shauncox26]

when i ran my oas. i did 4.65^3 net @33Hz using 2 4" aeros. those things got crazy low and decently loud. still have the box no carpet or finish work done as i change subs like underwear at times.

 

[Da64u 10+ year member]

what amp are you using to push the subs?
anywhere from 3.5 - 4 net tuned to 32-35hz would do fine

Also I'd use 1 6" aero vs 2 4" for efficiency purposes

AQ2200 or Hifonics 2200.1 if I can't find the AQ2200. Is this better? Is my port per cube too low?

 

[Da64u 10+ year member]

when i ran my oas. i did 4.65^3 net @33Hz using 2 4" aeros. those things got crazy low and decently loud. still have the box no carpet or finish work done as i change subs like underwear at times.

I'm not going to make my box pretty either lol