4th order bandpass design help

[herbykw 10+ year member]

So many people have told me that a 4th order is the way to go. Never had one. So when attempting to design a 4th order how do you know the sizes to make the enclosure? How many cubes for the sealed section? how to design the port?

Here is some of my info

Kicker Solo X 18"

AQ2200

02 Monte Carlo with about 7 cubes to work with.

Might have to design the box to dip into the spare tire area, for a extra few inches of space.

Click to read more...

 

[galacticmonkey 5,000+ posts]

Going to be very tight... If it will fit at all.

 

[TnT_Sounds 10+ year member]

I take it your not walling?

Good luck with that.

Might need to get some dimensions first

 

[herbykw 10+ year member]

OK, i think i can design it.. But i need to know where to get the specs from. I know with the normal enclosure the subs minimum ported and sealed measurments can be easily found.

But since Kicker states the smallest a sealed box could be is 6 cubes, does this mean the sealed section of the 4th order must be at least 6 cubes? and how do i know how large to make the ported area?

 

[80INCHES 5,000+ posts]

7 cubes to work with......i wouldnt even think about it

80

 

[herbykw 10+ year member]

ok, I posted this on ROE and everyone just said "it wont work" so screw if it will work or not, HOW DO YOU GET THE SPECS AND DESIGN IT????

 

[herbykw 10+ year member]

ok, so I posted the same wuestion on ROE. and the only thing they all say is "it wont work" I see the same thing is happening here. I am considering getting different subs. So once again i am asking HOW DO YOU GET THE SPECS AND DESIGN THE ENCLOSURE??

 

[7ender 10+ year member]

you talk to 80inches

or d/l winisd

 

[herbykw 10+ year member]

I have winISD and I am playing around with it, but there is a lot i dont understand.

 

[herbykw 10+ year member]

Anyone know how to know how much space for each section?

 

[tez4life Premium Member]

Not going to happen, not in that car unless its a wall.

Just to give you an example, the 4th order for my single 18" is 8 cubic feet on the ported side, and 3 cubic feet on the sealed (give or take a few inches), going in the trunk of a 04 Crown Vic. Its going to take up all my trunk space, and my car is bigger than your Monte Carlo.

I would suggest considering something else, maybe a good ported box for that sub if it will fit.

 

[tez4life Premium Member]

And if your dead set on a 4th order, id suggest talking to 80Inches, Iamamp3pimp, or Galacticmonkey, any of them could get you right with a different sub. Thats just too big for the car.

 

[herbykw 10+ year member]

Not going to happen, not in that car unless its a wall.
Just to give you an example, the 4th order for my single 18" is 8 cubic feet on the ported side, and 3 cubic feet on the sealed (give or take a few inches), going in the trunk of a 04 Crown Vic. Its going to take up all my trunk space, and my car is bigger than your Monte Carlo.

I would suggest considering something else, maybe a good ported box for that sub if it will fit.

ONCE AGAIN, not asking if it can be done. JUST ASKING HOW TO COME UP WITH THE NUMBERS? I am considering changing my system, and looking into IDEAS.

HOW DID YOU COME UP WITH THE 8 cubes ported and 3 cubes sealed?

 

[galacticmonkey 5,000+ posts]

You could fit a 4th order for a Solo X 18... It just wont work out very well.

 

[galacticmonkey 5,000+ posts]

The specs depend on the subs being used and the type of sound youre looking for.

Its the same way you come up for specs on a ported or sealed box... Just kinda go for it.