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Jamie Hebert

box dimensions for 15 fi sp4

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need dimensions on a box for a 15 fi sp4. website says 3,5 cu ft but other people are saying go 4 cu ft. really would appricate it

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how much room do you have to work with? what are you running to it? the sp4 will move a lot of air so port area needs to be right

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For someone to be able to design you a box you first need to list the dimensions of the max area you're able to give up in your vehicle, for obvious reasons.

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im running an sp4 15 on an saz-1500. from what i read big power = smaller box andl low power = small box. fi says between 3.5-5 ft^3. mine is in 4ft^3 after displacements w/ a slot port tuned at 33hz. my problem is my electrical its all stock other than big three. i pulled a 140.2 on music sealed on the dash, sub firing into the car not sealed off, had amp gain dialed back due to failing alternator at the time.

 

since then ive got a new alternator and battery but still stock, tuned the amp back up, and have the sub firing into the trunk which made it a completely different animal. its louder, lower, and tearing shit apart. 

 

post up some measurements of available space and ill get you measurments of my box tomorrow

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