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View Full Version : Sundown Nightshade 18'' wedge box



Bobby322
12-17-2009, 07:52 PM
Well im putting the NS in my single cab truck and wanted to do a wedge box with aeros. I was thinking of having the aeros firing upward. I dont know much about designing box at ALL, so hopefully someone can design one for me please :cool: I plan on removing the back track seat belt thing, and that will give me a couple more inchs of depth. I also can remove my middle seat as well if needed. I would rather not though.

Anyways...I threw in the old box I had that I found in my garage that was:

10.5'' top depth
14.5'' bottom depth
http://i355.photobucket.com/albums/r475/BobbyGedUp/100_0392.jpg?t=1261093830

It fit in with the seat belt track in the way, but the subwoofer hole was pretty close to my middle seat. If I got acouple more inchs from taking the seat belt track out it would've fit good. I think the best thing would be the have the sub cutout hole behind one of the passenger/driver seats so it would have room and not hit the middle seat.

Here are my approx max dimensions:

5ft across
12'' width (straight up and down, will have more with a slant) with retaining comfortable driver/passenger room
24''+ height to window line (can go above, dont really care about it)

I dont know what exacally my box needs to be, but I think 5 cubes is enough. I want to in the loww 30's (30-34). I can do slot port, but I dont think thats possible with a wedge box, idk though.

If any good designers out there would like to help me out id really appreciate it!
Thanks

cj407
12-17-2009, 07:56 PM
you are giving no room behind the pole vent for the sub to breathe...iirc those subs mounting depth are around 10"

mbrooky
12-17-2009, 08:03 PM
build one like the enclosure on dd's site:

http://www.ddaudio.com/dd/images/boxChevyFullSizeStdCab.jpg

Bobby322
12-17-2009, 08:06 PM
If the pole venting is a problem, you can set it up to have a couple of inches going up at the bottom, and then having the slant start

If its simple enough I may attempt to build it myself.

KHARPS
12-17-2009, 08:06 PM
58.5'' wide x 22.5'' x 9.75'' td x 11.75 bd (internal dimensions) = a little over 8 cubes roughly. I figured in a double baffle for the front so the external dimensions would be 60'' wide x 24'' tall x 12'' td x 14'' bd. Tweak the top and bottom depths to your liking but make sure they are deep enough to still fit the sub in there.

KHARPS
12-17-2009, 08:13 PM
Also, I always liked having the sub behind the passenger side and the aero ports on the far edge closest to the drivers side firing up.

http://i313.photobucket.com/albums/ll385/tezin87/lv4xlintruck.jpg

Bobby322
12-17-2009, 08:15 PM
I see.. how many cubes is that box?

What is a good size box for an 18'' NS and how much port area? And what size aeros do I need?

KHARPS
12-17-2009, 08:50 PM
That was for a single 10'' and it was I think 1.6 or 1.7 after displacements.

1.) Figure out what size box you want to use
2.) Tweak the dimensions until you get the desired volume
3.) Find out the outside dimensions for the aeroports you are going to use and make sure they'll mount correctly on the side of the box you plan to have them firing out of

I would think 4-4'' aeros would be good but aeros get expensive when using multiples. Maybe 2-6'' or a single 8'' from amartin. Ask amartin what the OD is of the 8'' and design your box around the aeroport.

Bobby322
12-17-2009, 08:53 PM
Well does an 8'' aero mean I need about 9in to work with if im firing them out the top? Id rather save as much space as possible.

Bobby322
12-17-2009, 09:54 PM
Can you slot port a wedge box?

KHARPS
12-17-2009, 10:01 PM
Well does an 8'' aero mean I need about 9in to work with if im firing them out the top? Id rather save as much space as possible.
It depends on the outside dimension of the mounting flare, that's something you'd have to ask him to measure for you.


Can you slot port a wedge box?

Yep. Just put it off to the side (like where my aeroports were). The DD example also has a slot port.

Bobby322
12-17-2009, 10:04 PM
oh alright thanks. I dont think I want to do aeros beacuse i plan on getting this done pretty soon and shipping will take forever with the holiday season. Will the port to the side still be loud, or will I regret it? That picture of the DD box doesnt look very detailed on the port. For a slot port on a wedge you dont have to make the port angled? just straight?

KHARPS
12-17-2009, 10:11 PM
oh alright thanks. I dont think I want to do aeros beacuse i plan on getting this done pretty soon and shipping will take forever with the holiday season. Will the port to the side still be loud, or will I regret it? That picture of the DD box doesnt look very detailed on the port. For a slot port on a wedge you dont have to make the port angled? just straight?

You could still have a slot port firing up. I'm bored right now so I'll put something together for you in sketchup to give you an idea.

Bobby322
12-17-2009, 10:12 PM
Okay im going to draw up some ideas and upload the pics

Bobby322
12-17-2009, 10:17 PM
edit - i **** at MS paint

KHARPS
12-17-2009, 10:34 PM
http://i313.photobucket.com/albums/ll385/tezin87/NS2.png

http://i313.photobucket.com/albums/ll385/tezin87/NS1.png


I didn't calculate volume or tuning or anything but it's 60''w x 24'' tall x 8.25'' td x 14'' bd. The port is 6'' x 15''.

Mookie
12-17-2009, 10:38 PM
I like that design.

Bobby322
12-17-2009, 10:40 PM
Looks easy enough. Came out to 5.6^3 w/ 1.5'' thickness. Im probally going to want to make the width a litte shorter, make it taller, and have the bd longer. What is that tuned to and thats 90sqin. of port? length times width right

KHARPS
12-17-2009, 10:55 PM
Not sure what it's tuned to. I just made the port 12'' long to show you an example.

Bobby322
12-18-2009, 10:13 AM
Im trying to find out what size i need, port area, and tuning I need

marcotheclepto
12-18-2009, 11:46 AM
when i get off work ill take a look at this for you. send me a pm so i wont forget lol

mbrooky
12-18-2009, 12:14 PM
you could do something like this:

40"Lx24h td 8.25 bd 14.5 with a 24" long port (8" port) some of it will have to be in the box and should have room above to mount the aQ. about 4.5cu @32hz....something i threw together...just an idea...:D
was having a hard time with sketchup..noob at it but i would throw some braces on the port as well...couldn't figure out how to do that or put a flare on the port...lol

Bobby322
12-18-2009, 03:48 PM
Looks pretty nice. Calculated it in here http://www.the12volt.com/caraudio/boxcalcs.asp and its 4.5 cubes with 1'' Thickness. Thats before the port displacement, and how much will that take up? And 24'' port? Can I just use PVC pipe?

mbrooky
12-18-2009, 06:12 PM
go to home depot in the concrete section...they sell 8" and 12" sonotubes called sakrete concrete tubes

zierbox
12-18-2009, 06:24 PM
How many different boxes have you had in that truck now?

18” sub behind the seat of a reg-cab truck ????????????????????

What exactly are you trying to achieve

mbrooky
12-18-2009, 06:38 PM
why 1"?? do 3/4...will come to about 5cubes before displacement....then just double the baffle...

Bobby322
12-18-2009, 06:56 PM
go to home depot in the concrete section...they sell 8" and 12" sonotubes called sakrete concrete tubes

Dont I need the flared ends or w/e they are called though?

Bobby322
12-18-2009, 06:57 PM
How many different boxes have you had in that truck now?

18 sub behind the seat of a reg-cab truck ????????????????????

What exactly are you trying to achieve

Ive had 2 boxs. Both were square and ported. First was for a 15'' in 3.5 cubes with port and sub forward. second was for 12'' sub and port up.

I just want a loud daily driver. Doesnt need to put up numbers. Want it low and deep.

Bobby322
12-18-2009, 06:57 PM
why 1"?? do 3/4...will come to about 5cubes before displacement....then just double the baffle...

Youre right!

Bobby322
12-18-2009, 06:59 PM
mbrooky - Are you sure there is enough room for the pole of the sub to vent with that design?

zierbox
12-18-2009, 07:39 PM
You should call me
Before you waste more effort and money

basscort2009
12-18-2009, 07:40 PM
You should call me
Before you waste more effort and money

good box builder but PRICEY! lol

zierbox
12-18-2009, 07:43 PM
Have you ever asked for the price?
How much money and time have you already wasted on bad boxes and designs

basscort2009
12-18-2009, 07:44 PM
Have you ever asked for the price?
How much money and time have you already wasted on bad boxes and designs

im not the OP i was just letting him know you got skills but can get costly. nothing against ya man :)

Bobby322
12-18-2009, 07:45 PM
I dont think I want someone to build it for me this time. Id rather learn how myself for future. A design would be really helpful though.

Bobby322
12-19-2009, 01:24 PM
So home depot will have an 8'' sonotube that I can use? Is that 24'' long x 8'' diamater? How do I install it without the ends like aero ports have?

Im going to home depot soon and getting mdf and tools.

jbizzle
12-19-2009, 01:25 PM
I have an extra 6" PSP port at home if you want it for cheap...

Bobby322
12-19-2009, 01:26 PM
thanks but shipping will be a pain w/ holidays and I want to build this in the next day or so.

Bobby322
12-19-2009, 01:39 PM
Also how much room does the pole need to vent? Its about 11'' mounting depth for the sub. How much would 16'' bh and 8'' th be?

jbizzle
12-19-2009, 08:59 PM
Also how much room does the pole need to vent? Its about 11'' mounting depth for the sub. How much would 16'' bh and 8'' th be?

It wouldn't need any, hence the aluminum pole plug ;)

Bobby322
12-19-2009, 09:02 PM
haha really? I dont really know what the alum. pole does,

jbizzle
12-19-2009, 09:03 PM
Plugs the pole :)

Bobby322
12-19-2009, 09:05 PM
sweeeet...checkout my build log http://www.caraudio.com/forum/showthread.php?t=452498

Hoping that design will work out.