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View Full Version : Need help designing enclosure for 18" BTL



mk_
12-11-2008, 10:17 PM
Hey guys,

My next build is with a FI BTL 18" fully loaded.

These are the dimensions I would like:

HEIGHT: 22 inches
WIDTH: 37 inches
DEPTH: 21 inches

I was throwing around the idea of having a slot port on the top of the enclosure like this sad drawing portrays:

http://i69.photobucket.com/albums/i53/mkmike103/box.jpg


Tuning I want to be around 35hz. Any box calculators I can use to determine the cuts for a box like this?


Or any other suggestions are welcome too.

Thanks,
Michael

mcsoul
12-11-2008, 11:37 PM
What type of vehicle?
SUV?

mk_
12-12-2008, 06:25 PM
It will be going in a Dodge Stealth.


These dimensions will fit, just not sure how to calculate the box with the port on top.

icpurplepplalot
12-12-2008, 06:26 PM
pen and paper :fyi:

mk_
12-12-2008, 07:21 PM
Suggestions for the width of port? Going for SQL if theres such a thing.

peas247
12-14-2008, 08:39 PM
up

RAM_Designs
12-14-2008, 09:12 PM
why not just do a port on one side, or a port on each side?

mk_
12-16-2008, 05:47 PM
Well, I currently have a slot port vertical behind the drivers seat. I was looking for something different, hence the top horizontal slot port idea. Crunching numbers it looks like I might not be able to fit it. I have 22" height to work with, 18" approx goes to the speaker alone, another 1.5" for thickness of mdf, leaving me with a small port width...

So I don't think that is going to work.


Port on both sides does sound pretty intriguing however..... not sure where to even start with it though..


Open to ideas!!!


Michael

RAM_Designs
12-16-2008, 07:36 PM
^^^The way you want to do it with the port above the sub won't work...it's just too skinny of a port. I've been designing a few boxes with the two ports, one on each side, for one sub. You're got a little over 8.2ft^3 to work with, which is plenty since you'll probably end up with right around 6ft^3 after all displacement.

iamamp3pimp
12-16-2008, 07:40 PM
ygpm in a minute