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View Full Version : What Calculator is Most Accurate



dan5505
12-08-2007, 03:15 AM
So i designed a box, and put the specs into three different online calculators: the one on Re's website, subwoofertools, and the one on carstereo.com. I got three very different port lengths. They varied by almost 10 inches. has anyone tested them to see which one is accurate?

mavster
12-08-2007, 03:17 AM
try WinISD...

dan5505
12-08-2007, 03:19 AM
i have, they all seem to vary

dan5505
12-08-2007, 03:19 AM
i tried calculating it out by hand just for the hell of it also. Do you think winisd is the most accurate then?

mavster
12-08-2007, 03:24 AM
Personally WinISD has never done wrong by me and my calculations...try it

dan5505
12-08-2007, 03:33 AM
k, all of these were @ 32 Hz port lengths are
Winisd: 50.00 in
carstereo.com: 49.25
subwoofertools: 51.5
RE: 37.125
by hand: 51.58

K, so i guess most of them are consistenly around 50, but the Re calculator is way off.

helotaxi
12-08-2007, 09:37 AM
The differences that you got with the different calculators aren't nearly enough to worry about (except the Re one and I've heard that it is crap). Placing the enclosure in the car is going to have a more profound effect on the actual tuning than the 2% difference in port length that you're looking at between all the calculators.

IamDeMan
12-08-2007, 10:16 AM
If used correctly, your brain will be the most accurate calculator.

htownplaya456
12-08-2007, 10:17 AM
I have always used Termpro and has seemed to be very accurate.

Symon_say
12-08-2007, 03:51 PM
Bassboc 6 Pro

kickerlivinloud
12-08-2007, 03:55 PM
If used correctly, your brain will be the most accurate calculator.



He speaks the truth!!








Jon

tcguy85
12-09-2007, 07:29 PM
winisd!

brokeitagain
12-09-2007, 07:42 PM
any sites with all the math equations to design an enclosure correctly?
i would like to try to do one enclosure that actually works for me this time

IgnoreMe
12-09-2007, 07:47 PM
winisd is off by like .3 or some **** from my calculations by hand. its the most accurate by far IMO

dan5505
12-09-2007, 07:53 PM
any sites with all the math equations to design an enclosure correctly?
i would like to try to do one enclosure that actually works for me this time

yeah, try this one.
http://www.realmofexcursion.com/forum/showpost.php?p=447126&postcount=1