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View Full Version : Box Building Day - Help



Primo
11-20-2004, 03:24 PM
I got a sheet of 3/4" MDF sitting here for my weekend project. I want to get rid of my sealed enclosure and make my first ported enclosure but I need some help with some calculations.

The speaker is a 10" Dayton Quatro with 500w going to it and the site recommends a .6 cuft enclosure, 1" x 8" x 25" slot port, and tuned to 55hz.

The box I am making is 12"h x 48 1/2"w x 8"d with an internal volume of 1.817 cuft.

Now my problem is, I have no idea how big to make the port and I was looking to tune around 45hz. Any help is greatly appreciated.

AznRevlAzn
11-20-2004, 04:37 PM
i'd say a good 2"-3" diameter port

jtomsic
11-20-2004, 05:05 PM
that sounds like a pretty scientific way of figuring it out there lol :rolleyes:

AznRevlAzn
11-20-2004, 05:07 PM
hey i am too lazy to find out. Just save yourself some time and make it a sealed enlocure.

supa_c
11-20-2004, 05:08 PM
just use a round port.
PVC isnt to expensive and www.the12volt.com/boxcalcs.asp (http://www.the12volt.com/boxcalcs.asp) has a port calculator to make it super easy.

Primo
11-20-2004, 06:29 PM
how big of a diameter for the pvc do you recommend? or does it matter.

supa_c
11-20-2004, 06:46 PM
im using 4" PVC.
I dont think it really matters

DBfan187
11-20-2004, 07:59 PM
BBP6 rec. a 3"x3"x20" slot port tuned to 24.8Hz(25Hz).

But your wanting 45Hz, so PVC it 3"x3.7" for 45Hz.

supa_c
11-20-2004, 08:02 PM
according to the12volt.com its 3 x 3.03".
If the 12v.com is wrong then im screwed.
I have to make a ported enclosure today

DBfan187
11-20-2004, 08:03 PM
according to the 12v.com its 3 x 3.03"
Are you taking the port and sub displacement into account?

supa_c
11-20-2004, 08:11 PM
thats a nay.....
Man i wish my BB6P worked !

LBX2G
11-20-2004, 08:16 PM
yeah audiobahninc.com calcurlator reconmends an round port of 3X2.98

DBfan187
11-20-2004, 08:30 PM
yeah audiobahninc.com calcurlator reconmends an round port of 3X2.98
Again, you're not taking the port and sub displacement into account.

LBX2G
11-20-2004, 08:38 PM
oooooooookkkkkkkkkkkaaaaaayyyyyyyy sorry, i mean ****, i did not even kno if it was right. I just wanted to use it and see, but it was perrty close tho.

DBfan187
11-20-2004, 09:00 PM
oooooooookkkkkkkkkkkaaaaaayyyyyyyy sorry, i mean ****, i did not even kno if it was right. I just wanted to use it and see, but it was perrty close tho.
True, you were only off by .75" or so;) Not much of a biggie though, unless you were to compete.