Hey guys,

just wondering if anyone can help me by giving me a little insight as to how to determine the tuning frequency of a box.

I figure it has to with the number of squared inches that make up the port (thanks to Don for that one) but I was just wondering if there is some mathematical formula to determine how to tune a port

 

im not sure of the math......if you go to the12volt.com, you can calculate port length by giving total box volume and port area ie: height x width and desired tuning frequency

 

Here's the link to the 12Volt calculators.

 

Yeah thats what I try to use now, but I thought knowing how it actually works would make me look smarter hahaha. I know they give the formula for round ports, but I was hoping for slot ports. Either way, thanks alot guys.

 

why dont you just ask someone to design an enclosure for you...

 

^^^

 

lol hahaha

its not that I need one, Don already designed one for me, its just in the process of drying

I was just curious as to how it all worked

 

that's the formula you want

or there is also this one, both are for tuning frequency



now u dont have to pretend to be smart.

 

so I`m guessing fb is the final frequency, Vd maybe volume after displacement,

the rest I have no idea. think you can claify Yuli?

 

but I'm not pretending when I say I don't know what all the variables mean lol


wait, think i got the first one

fb = box frequency
Dmin = minimum vent port diameter
Np = number of ports
Vd = maximum air displacement by cone excursion


wait think i got the second too, just too much to type. I guess this means I might need to get some T/S parameters for these TFX's *cough*