I have 2 10" re audio sx's and am thinking about building a custom box for them to put in my coupe. I will be using the re enclosure design calculator.

I am a bit confused as to 2 things.

#1 My 10's require 1.25 cf per. So does that mean that the box I will build has to be double that at 2.5 cf? ( might sould dumb but I need to know )

#2 The program says to use a square port. I can make a port that is 2.5 wide and 3.5 deep and that will work for my application and also tuned to 34hz assuming that I need a 2.5 cf box. I am thinking about using pvc pipe to stick out of the box and go up through the rear deck. ( there is a hole allready there for the stock sub ) So can I use a pipe that is the same diameter and depth as the spuare one or would it change the tuning frequency too much?

Also that port just seems a bit small to me for 2 10's. ( mabye it's just me )

Any help would be great. I don't want to screw this project up.

ps. I allready have these subs in a bassworx ported box that is approximately 2.25 cf and 2 sloted ports supposedly tuned to 40 hz. The subs face forward and the ports face up. Do you think that I would see any gains if I built a new box or should I just keep this one?

 

2.5cubes with 30 to 40 sq inches of port

 

Ya that port that re calculates me to use is only 21 square inches. Don't know if I should trust that program. If I use 30-40 square inches would it matter the width and height?

 

nope, it can be any shape

 

Thanks for the advice. It has promted me to find some port calculators online and from what I am seeing I need a port around 36 square inches. Where did you come up the figure or you just knew. Also do you think I should even make a new box?

 

Pm'd you