2 kicker l5 12's in ported box?

[Xinspaly 10+ year member]

So, i have a box design and i just want to make sure itd be big enough to be ported, or at this size just do a ported box?

its EXTERNAL dimensions are 38w X 14h X 21 depth,

using 5/8 thick wood that means internal volume would be 36 3/4 x 12 3/4 x 19 3/4

that is 5.3 cubes.. now, if i take a port, (slot design) i think my specs were 2 inches wide, 12 3/4 tall, and 8 6/10 deep to make it tuned to 36 hz, (id have to double check,

with that into consideration this box turns into roughly a 4.9 cubic foot box.. that is gross internal volume not net..

at that rate (4.9/2^3 feet) is that enough per sub at 36 hz? or would it sound better and be louder at a 5.3^3 foot sealed box?

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[NissanKicker 10+ year member]

You need a bigger port...

... 4" or 6" - Tune to 33hz or 32hz ( I perfer a 6" or better )

You'll love the sound quality....

... And It will hit Very hard & clean

 

[1rockford1 5,000+ posts]

what size wood u gona use again? u might wana go a little over kill on the bracing.

 

[Xinspaly 10+ year member]

wait 4-6 inches wide? Thatll cut down in my internal volume by an INCREDIBLE amount, to the point of having 2 cubes a sub IF im lucky, and its 5/8s..

I had an alpine type r 15 in a 4.25 cubic foot box that i built pushing 750 rms quite a bit and it never flexed once.. that was with NO internal bracing.. would it be neccisary at 1000rms for these guys?

 

[Xinspaly 10+ year member]

computer lagged and double posted, sorry**

 

[1rockford1 5,000+ posts]

u might wana do a little bracing u know i thought u had some L7's my bad. yea u should get some l7 they can take 1000rms or so each

 

[1rockford1 5,000+ posts]

u might wana do a little bracing u know i thought u had some L7's my bad. yea u should get some l7 they can take 1000rms or so each

 

[Xinspaly 10+ year member]

well im talking 1000rms+ to the both of them, if i make the port 4 inches wide how deep will i have to make it to tune to 37 hz? (take note its also 12 3/4 tall) also, will that significant reduction in internal voume effect the spl of the box? or at this size ported should i just make it a sealed box?

 

[RAM_Designs 5,000+ posts]

Port is too small, and use 3/4" mdf. Keep in mind that you have to include sub and bracing displacement as well, and if you're using 5/8" mdf you'll need a good deal of bracing.

 

[RAM_Designs 5,000+ posts]

I'd personally go with 5ft^3 tuned to 33hz for the pair...but I don't know if you have the space to build a proper box with those specs.

 

[stangman67 10+ year member]

DO yourself a favor and pay this guy ^^^^ 10 bucks to design a box for you. It will be well worth it.

 

[iGotbass812 10+ year member]

DO yourself a favor and pay this guy ^^^^ 10 bucks to design a box for you. It will be well worth it.

I second that. Makes one hell of a design. Putting it to the test this weekend //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[Xinspaly 10+ year member]

Tell me if this box makes more sense please, its a LOT bigger for the two kickers..

Its 46.25 wide, 18.25 deep, and 17.25 tall, with a 6inch wide 16 inch tall port, comes to a net volume of roughly 6.0405 cubic feet, (net without the subs)

how should that port be tuned? and is that box big enough?