4th order w/ DD 9515 and kx2500.1

[Scotty2Naughty 10+ year member]

Well I got a new car, a 04 Corolla and now I need to build a sub box. I have already ran a DD 9515 forward firing in a taurus off a KX 2500.1 with the trunk seal off. It worked quite well with the seats down but with the seats up it lacked in output. I am now looking into putting in a 4th or 6th order (I doubt I have room for a 6th) with 2 6" ports through the 6x9 holes. I just need help with box sizes, I will probably have to build the box inside the trunk but I have from about 3.8 cubes to about 5.6 cubes to work with, I need bass that hits pretty low (I love Young Jeezy) and isn't too peaky. I will be going to college with the car so I want a bit of trunk space. Throw out some sizes that I could use that would work out and throw some comments out about putting a DD 9515 in a bandpass.

Thanks

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[iamamp3pimp 5,000+ posts]

in a 4th order......1.4 sealed and the rest ported tuned in the 52 hz range

 

[80INCHES 5,000+ posts]

Agreed

80

 

[Scotty2Naughty 10+ year member]

Could I get away with 2 4" ports? I don't really know the rule of port area in a bandpass.

 

[iamamp3pimp 5,000+ posts]

oh god no......that sonly 25 square inches of port area.

you need about 5 times that.

 

[Scotty2Naughty 10+ year member]

So would 2 6"s be at least sufficient? it would be about 55 square inches

 

[iamamp3pimp 5,000+ posts]

no.

 

[dappa5 10+ year member]

that's ony double lol

 

[80INCHES 5,000+ posts]

U Need Atleast 2 8inch Round Ports (100.1 Square Inches)

80