Ported Q 12's in a hatch

[toolskizm 0]

I just ordered my 2 12's with BP power option...just for good measure. I'm gonna have a T20001bd on em. I want to port em. How do you think 1.8 cubes ported to 32Hz for each sub would sound? Do I need to push for 2 cubes? I don't have much room in my car...but here's a pic of the trunk space I have with my previous setup.

That was just 2 JL 10w3v3's

I'm thinking of running the boxes along the side where the old ones were. So how would 1.8 sound? Still jam the subs hard, or do I need to go for 2 cubes or even more? More than 2 would be pretty tough, but I wanna build the fiberglass boxes once...gonna be alot of work.

[NDMstang65 403]

So long as you stay within our guidelines you should be in good shape.

The larger box gets the more prone to low end response and 'boomier' it will tend to sound...

Thanks

-Nick

[toolskizm 0]

does anyone know wut my port volume would be if I'm going for 2 cubes ported to 32Hz?

[///M5 2,833]

Greatly dependent on the area. The more port area the longer the port.

[toolskizm 0]

Greatly dependent on the area. The more port area the longer the port.

Well, the thing is the box is gonna be oddly shaped. Actually, the two boxes will be different sizes because of the wheel wells in the car are different on both sides.

Without the port I was looking at 2.88 cu ft on the left side...3.32 on the right (of course I would make these the same size...which would prob end up being 2.88). These are including sub displacement, but NOT port displacement (kuz I dont know how big it has to be)

The port area...I'm not sure. The port will be along side the wheel well I guess. So, that side is 9" high. Length, I can go about 14"? maybe more maybe less by an inch. I can play with that number, but it depends on what I need.

..idk, did that help?

Edited September 19, 2007 by toolskizm

[toolskizm 0]

that fine diagram shows you how it'll be setup.

As you can see..that cubic figure is the port going along the wheel well.

[toolskizm 0]

I decided to change the box design to something simpler. If someone could help me out in the design that would be awesome. I don't have a program for the tuning of the port and all the info on it. I can supply the biggest dimensions that I can have in the car.

These are external dimensions: 40x14x23

Here's a pic of how I plan to have it in the car...both subs and ports firing up. I want to get in between 2.5 and 2.25 cubes ported to 32Hz. I'm putting two Q 12's in it...so the displacement is .16 per sub. And the box will have a divider.

If someone can help me out on the port info that would be awesome. The only number that can be played with is the depth (23"). The rest must stay as they are.