Posted on Monday, June 25, 2007 - 21:15 GMTOk, ive been working on my first box for 2 budget 12's just as kinda practice. I've got my dimensions and everything measured out to make it a 4ft^3 box.
Now I've started cutting out my peices and I cant figure out the port part yet. I drew up some designs for the box so tell me if this looks right.The dimensions are 32 long, by 19 deep and 14 high. The speakers are 12' for the perspective.I'm trying to tune it to 35 hz and based off the port dimensions of what I have drawn, the opening is 2x14. I used an online calculator and it said the length should be 10'. Does this design look correct?
The rules governing the behavior and proper design of ported speaker systems are considerably more complex than those for sealed enclosures. For this reason, it is a good practice to follow the advice of the speaker manufacturer or an experienced enclosure designer when it comes to designing a ported system. Just got a new enclosure design for 2 12 AB subs, the port is 3.5 inches wide. I showed a friend the design and he is said the port should be wider. What is the concept behind port size? Bigger louder? Smaller cleaner sound? Is it a calculation? Or is it just based on personal preference?
The port looks akward and not very functional this way like it might be too short. I just need to know if this is right so I can feel confident gluing my box together.