someone wanna clear up these formulas for me?

[abervintageman42]

which one do you guys use, this one?

http://img713.imageshack.us/img713/2590/tuningformula.jpg

or this one?

(.159)square root(cross sectional area of port)(1.84x10^4)/(net volume)x(length of port + .823 x cross sectional area of port)

ive used both the the second one seems more accurate but would anyone mind walkin me throguh these?

[abervintageman42]

Damn guys help a fellow basshead out

[n8ball2013]

torres (expo) cleared these up better than anyone could

[abervintageman42]

Not for me dude, his box calculator won't give me the port sides on the cut sheet

[abervintageman42]

Damn figured someone woulda said something by now!

[Mrbubbles00482]

Just use the12volt.com box calculator and port calculator. All you have to do is accomidate for wood thickness and port displacement.

I use those calculators first and then do things by hand to double check, which you really don't need to do because their calculators don't round up or down, it's exact measurements.

Edited April 22, 2010 by Mrbubbles00482

[abervintageman42]

I'd rather do it by hand, it ensures me that everything is accurate and I can use the port area I want

[Decaf]

use this... put it in a graphic calculator and u will thank urself later

http://img713.imageshack.us/img713/2590/tuningformula.jpg

[abervintageman42]

That's what I have been putting in there but it always comes out tuned to like 1000 somethiing idk what I'm doing wrong

[Decaf]

order of operations my friend

PEMDAS or "Please Excuse My Dear Aunt Sally

parenthesis, exponents, mulitply, divide. addition, subtraction

Edited April 22, 2010 by Decaf