Opinions on this box

[Lowflyin 10+ year member]

36w X 15.75H X 27D Box with a port that is 25.5W X 3.5H X 27.9D for 35hz. is this correct? Im looking for 5.5 cuft net at 35hz and 89 sq inches of port. take into account also .28 cu ft for sub displacement/.

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[JoshC 10+ year member]

Calculators, Charts, and Diagrams

 

[Lowflyin 10+ year member]

i realized i messed up a little, let me fix it real quick

 

[Lowflyin 10+ year member]

36w X 15.75H X 27D Box with a port that is 25.5W X 3.5H X 27.9D for 35hz. is this correct? Im looking for 5.5 cuft net at 35hz and 89 sq inches of port. take into account also .28 cu ft for sub displacement/.

 

[Lowflyin 10+ year member]

Anyone?

 

[Lowflyin 10+ year member]

Ya? No? Rack city?

 

[Lowflyin 10+ year member]

So pretty much if I'm not Paying someone they won't help?

 

[i2ain2thunder 10+ year member]

lol no just bump someone will eventually come in and help ya out...but dude just use the calculators, may take you a few minutes to figure out how to use them but they are pretty easy. I'd help you but my experience is prob about as much as yours.

 

[Lowflyin 10+ year member]

I got more dimensions on post #4 I'm pretty sure it's right I just wanna make sure, thanks though

 

[THATpurpleKUSH 5,000+ posts]

From my calculations I have 5.525cu/ft after sub and port disp with 89.25sq in of port area tuned to 34.92hz.

 

[CAT MAN 5,000+ posts]

what do you want what subs etc.... i can help a bit for free

 

[RAM_Designs 5,000+ posts]

You're close enough. Considering no bracing, I got ~5.25ft^3 with a tuning just under 36hz. With the port needing to be 28" long, I'm assuming you can just use the depth of the box (25.5") and put a 45 in the back corner to turn the port that last bit.

7.25ft^3 before displacements

27"x4.25"x25.5"(interior depth of box) = 1.7ft^3 port displacement

sub displacement per your info: .28ft^3

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~5.25ft^3 after sub and port displacements.

 

[Lowflyin 10+ year member]

Thanks Ryan, this sound alright for an hdc 318, I have 3000w for it so a little smaller box may be ok. Andrew mast said he has had good results between 5-6 cu ft so I went off that