Help with subwoofer box? Thx

[Abraham2nd]

Hi guys i wanted to build a good box that can play really low bass that you can Feel and not hear. the kind that makes your heart cramp lol.
Anyways i have this box in the pic, could you guys tell me what frequency is this build? and whats the volume? im getting 2.092 cu ft and about 36ish as the hertz???
NB: the port length is from extension to port opening added.


i want to build something a little more deeper like maybe 30htz? or your opinion idk.
And this is how i wanna build it:\
not the measurements of course. lol but smaller

[nervewrecker]

t line?

[Abraham2nd]

t line?

yea transmission line ported

[- Rovin's car audio -]

for what sub ? ...

[Abraham2nd]

for what sub ? ...

oh sheit sorry
sub spec;
vas;0.58
qms;6.21
qts; 0.626
qes; 0.696
bl; 20.32
fs; 37hz
splo; 83
1500w 900rms watt 10"

rec port area: 12cu in ft......1.5^3 rec enclosure

[- Rovin's car audio -]

T-lines are too big unless u have alot of trunk space , try a simple ported box 1st

u will have to work out d specs urself but my 2 cents : from what u saying try a tuning under 30 in d high 20s

make ur cuts accurate & assemble d box without using any wood glue & give it a test in ur ride , that way it will be easy to readjust port & cuft

u wud want d port firing against a solid surface so that it loads & gives a nice roll off ....

[kavaninho]

Dont bother with that t-line monstrosity. A nice ported box tuned low should work out well. Try using aeroports, the roll-off is much more pleasing than the regular "slot" type port.
What sub is that you are using?

[Abraham2nd]

Its everest seaker .
But hey guys I don't know what measurements to use? If I'm using ported I want the wood to be close the back end of the magnet but not too close. So it wouldn't flopp

[Abraham2nd]

This is what I got in some online thing when I'm plugging my speaker info but It ent give me h w and depth lol

[nervewrecker]

Sealed t-line iymc if you cant do a ported.

[nervewrecker]

This is what I got in some online thing when I'm plugging my speaker info but It ent give me h w and depth lol

A 4" port sounds a bit too small for 2.5ft3
You will need two of those if anything.

[Abraham2nd]

Everyone's mis understanding my original post.
I don't kno squat about tuning so I can't use any measurements.. Ukno?

[- Rovin's car audio -]

* fixed a link

http://www.the12volt.com/caraudio/boxcalcs.asp

[- Rovin's car audio -]

try some 4" pvc pipe ports & experiment ...

[Abraham2nd]

any1?

[TK!]

I'd go sealed for lows. and plenty plenty power. discuss?

[Abraham2nd]

Can anyone calculate the box for me? Just to double check my calculations? Its in my first post. And secondly can you guys tell me how to get the height width and depth from JUST the volume of the subwoofer specs I posted in the last pic?

[nervewrecker]

I'd go sealed for lows. and plenty plenty power. discuss?

Ported can do lows. Coupled with the right subsonic filter and box design, its more efficient than sealed.

Dont get me wrong, sealed is the simplest box design and smallest that can sound great but when it comes to vs ported, there are a lot of factors t consider when choosing the design.

[- Rovin's car audio -]

OP u have to help ur self , did u even open d 2 links i posted ?

use it & some basic maths to figure out ur box dimensions , dont forget to account for sub\port displacements & thickness of materials especially if ur using mdf


as for sealed : depends on what i am feeling for but i have used alot in my own systems , does get low depending on sub & airspace u give it , yep it does takes more power to get loud ...

[Abraham2nd]

OP u have to help ur self , did u even open d 2 links i posted ?

use it & some basic maths to figure out ur box dimensions , dont forget to account for sub\port displacements & thickness of materials especially if ur using mdf


as for sealed : depends on what i am feeling for but i have used alot in my own systems , does get low depending on sub & airspace u give it , yep it does takes more power to get loud ...

Yeah I checked it out but one page not opening and I don't really understand it too much. I already calculated my current box BUT I wanted someone to double check it for me just in case I'm wrong . and there's another question I need answer on is how can I get a width height and depth from just the volume???

[fatboy slim]

http://www.the12volt.com/caraudio/boxcalcs.asp

[rollingstock]

Those ts parameters for that sub aren't ideal for a t line. Go ported, fire up winisd and play around

[radIS300]

your box program calculated a volume of about 2.5cu. ft. you can play with the overall dimensions to get the desired shape/footprint you want as long as its close to 2.5cu. ft. internal volume, you must subtract the volume of the port also

A 4" round port would be fine anything bigger would need a longer port thus increasing the overall size of the box.

Ported is better for you since you want to go low and maintain some efficiency since you only using one driver, I wouldn't bother tuning below 30hz for music in a car, you should also consider cabin gain, IMO

[3stagevtec]

OP u have to help ur self , did u even open d 2 links i posted ?

use it & some basic maths to figure out ur box dimensions , dont forget to account for sub\port displacements & thickness of materials especially if ur using mdf


as for sealed : depends on what i am feeling for but i have used alot in my own systems , does get low depending on sub & airspace u give it , yep it does takes more power to get loud ...

Yeah I checked it out but one page not opening and I don't really understand it too much. I already calculated my current box BUT I wanted someone to double check it for me just in case I'm wrong . and there's another question I need answer on is how can I get a width height and depth from just the volume???

You estimate the dimensions of the enclosure, choose a L, H, D most suitable to your trunk space, then work out the volume. If too small or too large, adjust one dimension accordingly and recalculate.

A box tuning program will give you volume and port size. Work out the volume of the port itself and make sure you minus that to the net box volume you obtain. Keep playing with the dimensions until you get it right.

T/S specs does not always give a very realistic idea on how a subwoofer will perform. Don't get carried away too much with them. Sometimes experimentation will yield better results. Use PVC for your ports, so that way you can easily adjust them (length wise) if you are not satisfied.

Efficiency Bandwidth Product (EBP)
http://redspade-audio.blogspot.com/2011/03/efficiency-bandwidth-product-ebp.html

(Your sub EBP is 53).

[racedriverpro]

Sealed is better option imo..consider port turbulence, the low frequency ur looking for, and less risk of overpowering. From experience, real low frequency and ported can cause a disaster especially for the inexperienced.