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View Full Version : how big is this?? volume??



scarolinablazin
08-03-2008, 12:17 AM
30x24x16 inches??

and also i would like to tune it to around 36 what size slot port?? 14.5 high around 3 wide how long?
or what would be a better all around freq for a daily but still have somewhat heavy bass?
thanks, been a very very long time since i built a box or used math like this and all the box programs i use give different answers

slam
08-03-2008, 12:19 AM
30x24x16 inches??

and also i would like to tune it to around 36 what size slot port?? 14.5 high around 3 wide how long?
or what would be a better all around freq for a daily but still have somewhat heavy bass?
thanks, been a very very long time since i built a box or used math like this and all the box programs i use give different answers


l x w x h /1728

cycloneman
08-03-2008, 12:27 AM
You are looking at 5.3 cu ft before port and speaker displacement. Make that port about 11" long. After port and sub displacement, that would put you about 36hz.

scarolinablazin
08-03-2008, 12:31 AM
l x w x h /1728


You are looking at 5.3 cu ft before port and speaker displacement. Make that port about 11" long. After port and sub displacement, that would put you about 36hz.

ahh i need between 3.7-4.3 would like to keep the 30 wide and need at least 16 deep sub up port back {15 inch sub} so how tall and what port length to get the 36?? thanks

scarolinablazin
08-03-2008, 12:37 AM
ok, i get that an outer of 30x16x20 = 4.42
a port 3x14.5x?? to get 36 thanks

scarolinablazin
08-03-2008, 12:45 AM
ok, hows this??

outer 30x18x17 = 4.21 inner cubes??
port = 3wide 16.5 long = 36.34 hz??
sound right??
thanks

scarolinablazin
08-03-2008, 11:48 AM
Any1??

a_steezy
08-03-2008, 11:50 AM
i can't count how many times i've posted this on here

http://www.reaudio.com/speaker_box/LPort_Box_Calc.html

scarolinablazin
08-03-2008, 12:04 PM
i can't count how many times i've posted this on here

http://www.reaudio.com/speaker_box/LPort_Box_Calc.html

thats what i used to get those dems. just wanna be sure their correct b4 i start cutting

skmfkr
08-03-2008, 12:27 PM
sounds like you have no idea how to design a box

you need to do l x x h /1728 like posted to get yoru gross volume then subtract your sub displacement and port displacement to get your net volume

scarolinablazin
08-03-2008, 02:36 PM
sounds like you have no idea how to design a box

you need to do l x x h /1728 like posted to get yoru gross volume then subtract your sub displacement and port displacement to get your net volume

apparently you dont either as your response is wrong. its lxwxh/1728 and i know the sub/port have to be subtracted. like i said i used the program that was posted. if you don`t know if it`s correct or not its best to not post ***** and keep your mouth shut so you don`t continue to make yourself look foolish.

and i do believe i`m here asking for help therefore i KNOW i can`t do it. it`s been at least 6 years since i even built a box and it was a simple sealed. SOOOO ur point??

skmfkr
08-03-2008, 03:34 PM
yeah thats what i said i just missed a w lol

NT_Hardcore
08-03-2008, 05:11 PM
i have used that program b4 and had great results. a sheet of mdf is like 25$ buy 2 and build 2 or 3 diff boxes.