Box for 18" BL

[LazyFcuk 0]

I am going to build my box for the sub before it arrives but not complete it fully until I have made sure it fits etc.

Now I need some help with the dimensions.

I have this plan who someone sent to me and I am wondering if it should work pretty good.

Base is 24depthx24heightx36width

port is 5" wide and 27.25" long 22.5" height.

Is this correct with 8cu ft box and 1.77 cu ft port?

so 8cuft tuned to 32hz?

any input? anything will be gladly appreciated.

[LazyFcuk 0]

Also this is kind of off topic but I am planning on getting a cheap alpine deck. will this affect my sub output or quality?

Alpine MP3 CD Car Deck (CDE-9872) with 1500d sundown amp

[NB50 206]

That is about right. You should have some bracing in there also.

[LazyFcuk 0]

im going to run the port face the rear and the sub facing the roof. How could i support it?

[LazyFcuk 0]

Do my dimensions sound right, looking for a couple more answer before I begin my build. Thanks

[stylezzz8o8 0]

i think you calculated wrong.

with your info i got about 6.6 ft^3 tuned @ 27 hz

[LazyFcuk 0]

are you sure? because it was made by Scott of fi who gave it to a buyer who graciously sent it to me.

[stylezzz8o8 0]

are you sure? because it was made by Scott of fi who gave it to a buyer who graciously sent it to me.

yes im sure. maybe u got wrong info. use this to calculate it http://reaudio.com/speaker_box/LPort_Box_Calc.html

[Bobaflob 0]

Im personally running 8 cubes at 32hz and i love it. Make sure to brace it well, or your box will flex.

[bassahaulic 155]

Wow I fail for not thinking about weather it was internal or external measurements lol

Sounds good though man!

Edited March 13, 2009 by bassahaulic

[Bobaflob 0]

Comes out to 8.325 cubes tuned at 31.8hz for me. Check your port lengths, re calc adds 8 inches automatically. Used re enlcosure calculator, with no added bracing

Edited March 13, 2009 by Bobaflob

[LazyFcuk 0]

any suggestions for bracing?

[bassahaulic 155]

You could use All thread. Or 2x4"s

[Bobaflob 0]

Dowels work well for bracing also.

[stylezzz8o8 0]

Comes out to 8.325 cubes tuned at 31.8hz for me. Check your port lengths, re calc adds 8 inches automatically. Used re enlcosure calculator, with no added bracing

what do you mean?

how did you get that?

did you use the re calculator i used?

[Bobaflob 0]

Comes out to 8.325 cubes tuned at 31.8hz for me. Check your port lengths, re calc adds 8 inches automatically. Used re enlcosure calculator, with no added bracing

what do you mean?

how did you get that?

did you use the re calculator i used?

Yep

Re calculator

[stylezzz8o8 0]

Comes out to 8.325 cubes tuned at 31.8hz for me. Check your port lengths, re calc adds 8 inches automatically. Used re enlcosure calculator, with no added bracing

what do you mean?

how did you get that?

did you use the re calculator i used?

Yep

Re calculator

man this is irritating me now. i put all the dimensions that he put and i still come out with 6.589 ft^3 and 27.123414313741 hz

[LazyFcuk 0]

There is the plans, suggestions for bracing and does it need to be bigger then?

[stylezzz8o8 0]

There is the plans, suggestions for bracing and does it need to be bigger then?

wait why is the length for the port only 4? i thought he said 27.25???

[Bobaflob 0]

Comes out to 8.325 cubes tuned at 31.8hz for me. Check your port lengths, re calc adds 8 inches automatically. Used re enlcosure calculator, with no added bracing

what do you mean?

how did you get that?

did you use the re calculator i used?

Yep

Re calculator

man this is irritating me now. i put all the dimensions that he put and i still come out with 6.589 ft^3 and 27.123414313741 hz

Tune it to 32hz and see what happens.

[LazyFcuk 0]

There is the plans, suggestions for bracing and does it need to be bigger then?

wait why is the length for the port only 4? i thought he said 27.25???

what

[stylezzz8o8 0]

Comes out to 8.325 cubes tuned at 31.8hz for me. Check your port lengths, re calc adds 8 inches automatically. Used re enlcosure calculator, with no added bracing

what do you mean?

how did you get that?

did you use the re calculator i used?

Yep

Re calculator

man this is irritating me now. i put all the dimensions that he put and i still come out with 6.589 ft^3 and 27.123414313741 hz

Tune it to 32hz and see what happens.

i made port length 0 and it came out to 8.375. but didnt he say 27.25 for the length????

[LazyFcuk 0]

in the calc it comes to 30.5 port length tuned to 30.8hz

[BKOLFO4 29]

wait why is the length for the port only 4? i thought he said 27.25???

The rear portion is 4", the total port length is 27.25"

That box is just under 8 ft^3 tuned to just under 32 Hz. Should work great!

Brian

[stylezzz8o8 0]

OH I GOT IT!!! OMG. i was changing the port length 2 to 27.25 without realizing i was suppose to make that into the total port length. MY BAD YOU GOT IT RIGHT