View Full Version : 15" XXX, 13" tall

12-11-2005, 11:38 PM
Well, I recently purchased a 15" XXX and a Cadence ZRS-9, (off Breakdancin11, great guy) and once I started doing measurements, I realized I've only got about 13" high to work with in my trunk, but I've got 36" wide, and around 26" deep, so I've got enough space, but I'd have to fire it upwards.

Does anyone have any suggestions as far as port location? Should it be on the front, top, back, whatever? Does it really make a difference? I'm thinking I should fire it upwards, and port it towards the back of the car.

Is there any reccomended area for port size? I know that length determines the tuning, for the most part, but is there any specific amount of area I should aim for when porting it?

I've never built a box before, so this is going to definitely be interesting. Maybe I'll post pictures or something, even though it'll be totaly lame and just like every other box ever created...heh.

12-11-2005, 11:39 PM
port area and legnth and box vol all determine the tuning, what vehicle btw

12-11-2005, 11:43 PM
I usually fire the port and the driver the same way as to help eliminate some of the chances for cancellation. That's not to say it's the best way in every install, but I've found it works well most of the time.

12-12-2005, 12:04 AM
It's a 1997 Lincoln Mark VIII.

I wouldn't mind making the box 13x36x24, that would be 6.5^3 ft, which would allow for the displacement of the port and the driver, and still have at least 4^3 ft, tuned to 27hz, RE's recommendation. I'm mostly unsure about how big the port should be, because I know that the box can't really be "too big", but a port most certainly could be.

Also, would firing up/ported up be a problem? It would be moving air right into the top of the trunk, which might cause a problem, or might not. I'm not really sure. I figured if I ported it into the rear of the trunk, it would be allowd to move the air more, because there would be more free air behind the box than above it.

12-12-2005, 12:05 AM
His car is a lincoln mark VIII, I know him heh.

EDIT: ****, should of refreshed before posting.

12-12-2005, 02:07 AM
if you were to fire it up and port it up it wouldn't be a problem. we call that crx style. That's how I have my box right now in my teg

12-12-2005, 09:29 AM
i think you mean its a crx style box if the sub is facing up and the port to the back

12-12-2005, 09:30 AM
Just slant the baffle, a 15 would be do-able in a 13" space if you did that.

12-12-2005, 12:26 PM
Just slant the baffle, a 15 would be do-able in a 13" space if you did that.

I'd love to do that, but the mounting depth is something like 10 inches, and the magnet is 8 inches wide, and you also need space so it won't overheat, it makes it impossible to do :(

12-12-2005, 12:30 PM
if its a ported box, you def dont have to worry about it overheating.

12-12-2005, 12:43 PM
Nothings Impossible.

12-12-2005, 01:19 PM
You should be able to pull off a slanted baffle.

12-13-2005, 01:09 AM
if its a ported box, you def dont have to worry about it overheating.
So, how much clearance do I need? Would as little as ½" be enough? Also, how big should I make the port? (in²) How much does total port size affect performance? If I were to make two ports, one on each side, would it potentially make it sound better or worse? Someone needs to make a really large FAQ. It would help... a lot.