Sundown Audio Nightshade 18'' -- AQ2200 >> Truck Build

[Bobby322 10+ year member]

lol crap i just did all the math...hold on re-do

 

[Bobby322 10+ year member]

The slant won't affect it as long as the port doesn't touch the baffle. Make sure you leave a port's width away from the bottom of the box though.

Think it will be noticably louder if I port up compared to the side?

 

[Bobby322 10+ year member]

Wrong.
Its half the diameter of the port(the radius) squared(so approximately 4x4) x 3.14 x the length of the port divided by 1728

That would be .66 cubes. I used 23'' as my port length. Which one of you is right? //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[RetroAudioinc 5,000+ posts]

Can we get some photos of the truck and space your working with? I have owned like 10 trucks single cab, extended, crew I might be able to give you and idea..

What I have done in trucks

Single cab

2 12's behind the seats

4 15's in camper coming through window

4 8's behind seat

crew

2 12's behind driver current subs

1 15" behind driver

6 12's blow though in window ( photos in my profile here. )

1 18" behind driver ext setup.

 

[KHARPS 10+ year member]

Displacement is how much room something takes up. I would think you would use the entire width and not just the radius, I could be wrong though.

 

[KHARPS 10+ year member]

Yeah I think Spooney is right...my bad.

 

[Bobby322 10+ year member]

no prob. I have 4.4^3 after displacements, not including bracing.

Think Im going to have to port through the top and leave some port hanging out to save room.

 

[Bobby322 10+ year member]

Can we get some photos of the truck and space your working with? I have owned like 10 trucks single cab, extended, crew I might be able to give you and idea..
What I have done in trucks

Single cab

2 12's behind the seats

4 15's in camper coming through window

4 8's behind seat

crew

2 12's behind driver current subs

1 15" behind driver

6 12's blow though in window ( photos in my profile here. )

1 18" behind driver ext setup.

Yeah I can get some pics tomorrow or find some older ones i posted

 

[Bobby322 10+ year member]

Decided im porting out of the top of the box. 11'' in the box, and 11'' out. Box is 5.75^3 before displacements.

sub - .25

port - .32

double baffle - .41

4.75^3 after those displacements. Ill try to brace strong but with as less as I can.

 

[RAM_Designs 5,000+ posts]

you can use the 18 in 4.5 cubes, 3 10s are probably going to need a bigger box than that.

Not really, since a normal 10" sub needs 1-1.5ft^3 each, and you can get away with less since he'd be using a common chamber.

length of port x OD of port x 3.14 = XThen divide X by 1728

Nope.

Wrong.
Its half the diameter of the port(the radius) squared(so approximately 4x4) x 3.14 x the length of the port divided by 1728

Yes!

Displacement is how much room something takes up. I would think you would use the entire width and not just the radius, I could be wrong though.

Nope again.

Yeah I think Spooney is right...my bad.

Indeed!

 

[mbrooky 10+ year member]

where is the wood glue?

x2...get some Titebond II!

 

[Bobby322 10+ year member]

I'll use a mixture of both liquid nails and wood glue. Some say the liquid nails are better, some dont.

 

[Spooney 10+ year member]

If you must use the liquid nails id just do wood glue on all the joints and then use the liquid nails on the internal seams to make sure shes all sealed up

 

[Bobby322 10+ year member]

well the only thing ive glued is the double baffle. Ill throw some wood glue in the build.

 

[mazdakid 5,000+ posts]

Liquid nails instead of wood glue isn't going to work with that sub and 2200 watts.