blowthrough box help

[2kyukon 10+ year member]

hey guys i am deciding to take my soundqubed hdc318s outs of my golf and install them into my truck since my golf cant support enough power to run them.

i have basically unlimited space i have

48w

96l

21height

but my port can only be 36w x 13t i figured i have just under 50 cubes to work with but dont need all of it obviously.

should i run a 4th or 6th order and if so who should i have design it as im trying to build asap maybe this weekend

if just a normal ported box how do i accomodate the difference between where the top and bottom of the speakers are to where the opening is for my blowthrough

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[2kyukon 10+ year member]

Anyone

 

[mlstrass 5,000+ posts]

I wouldn't do a 4th, but they will work in a 6th. Or you could do forward firing subs/port and tune a little higher since the length of the blowthrough will effectively increase port length/lower tuning.

 

[2kyukon 10+ year member]

How much above tuning should I start with I'm looming for mid 30s so should I start in the mid 40s and play with tuning or just do a external port and bring it upto the blowthrough?