sundown e15 wall

[4bannger]

I'm sure you could.

For first design, double thick all the walls, like it is. Make it 15-16 cubes net. Bring tuning to about 34 or so, strictly preference of course, but this is assuming good overall musical performance.

If you want to make it way easier on yourself, you can go ahead and make the box deeper like you mentioned, which means you won't have to do the angled shell, can make it a straight-up cube pretty much.

the walls are already doubled as is it. Im gonna plan on tuning about 33hz so when i add in bracing it will bring the tuning up. what kind of port area should i shoot for. i know you dont go with the port per foot rule. as far as the shape of the box im kinda stuck to running with that shape. I dont wanna build the box im the vehicle and this is the biggest i can make it and fit it through the back hatch.

[Raptorman]

The bracing won't bring tuning up NEARLY as much as you think. You'll probably have .1-.2 cubes of bracing at most.

Easy way to figure that out is say you have a single 2x4 bracing from front to back. And the 2x4 is 30 inches long. You're gonna take 1.5(height) x (3.5 width) x 30 (length), and then divide that number by 1728.

So that single 2x4 takes up 0.09 cubes.

Your port area is pretty spot on. It's a bit much for what I would do for the E series, but it will be perfect if you upgrade to SA's.


What I meant about changing the shape of the box, is that you can shorten the width of the box, to the width of the very top, so that it's a cube.

But by doing that, you're losing a lot of volume right? Well you can add more depth to the box, you said something about taking up more cargo area if needed, that's why I suggested.

[4bannger]

The bracing won't bring tuning up NEARLY as much as you think. You'll probably have .1-.2 cubes of bracing at most.

Easy way to figure that out is say you have a single 2x4 bracing from front to back. And the 2x4 is 30 inches long. You're gonna take 1.5(height) x (3.5 width) x 30 (length), and then divide that number by 1728.

So that single 2x4 takes up 0.09 cubes.

Your port area is pretty spot on. It's a bit much for what I would do for the E series, but it will be perfect if you upgrade to SA's.

What I meant about changing the shape of the box, is that you can shorten the width of the box, to the width of the very top, so that it's a cube.

But by doing that, you're losing a lot of volume right? Well you can add more depth to the box, you said something about taking up more cargo area if needed, that's why I suggested.

i usually add more bracing than that lol. but i will just bring the tuning up to 33 hz and see what happens or ill design up some fancy window braces for the box and calculate the displacement using speaker shack. i wanna keep the box as shallow as possible so i can keep as much cargo area as i possibly can. if i take them off i do loose a lot of volume.

[Raptorman]

Yes you will obviously need more bracing that that. But there are things less bulky than 2x4's that will do the job just as good if not better, while being a ton smaller.

Such as threaded steel rod.

[4bannger]

Yes you will obviously need more bracing that that. But there are things less bulky than 2x4's that will do the job just as good if not better, while being a ton smaller.

Such as threaded steel rod.

Yes that's true. I was thinking about threaded rod. And using angles corner supports. I'm gonna start stock piling some Mdf from work. Maybe you can swing by and help us out

[Raptorman]

I have angle iron in everything corner of my wall. It's awesome stuff.

I'd love to come swing by and help some time. Just hit me up.

Here's my angle iron in my current wall.





And then threaded rod in my last wall. It worked awesome.

[greezychef]

^very nice

[4bannger]

I have angle iron in everything corner of my wall. It's awesome stuff.

I'd love to come swing by and help some time. Just hit me up.

Here's my angle iron in my current wall.

And then threaded rod in my last wall. It worked awesome.

nice man, is there any benifit of using plywood over mdf besides weight?

[4bannger]

I'm sure you could.

For first design, double thick all the walls, like it is. Make it 15-16 cubes net. Bring tuning to about 34 or so, strictly preference of course, but this is assuming good overall musical performance.

If you want to make it way easier on yourself, you can go ahead and make the box deeper like you mentioned, which means you won't have to do the angled shell, can make it a straight-up cube pretty much.

how does this look man. took off the angled sides

[g2shuck]

Due to port area I vote 3rd design