box for fi bl

[rain377 10+ year member]

I am building a box today for a 15" fi bl. i already have the dimensions. it will be 3.9 ft^3 tuned to 33hz. the only thing i need to know is should i go speaker back port back or speaker up port back. it's going in a grand cherokee. thanks for any input

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[Jdizzle 10+ year member]

seems like sub up port back is the best option for suv's but i've had both and couldn't really tell a big difference

 

[Jdizzle 10+ year member]

seems like sub up port back is the best option for suv's but i've had both and couldn't really tell a big difference