box size help

[Memphis4L 10+ year member]

going with two 18" fi ssd's that will be powered by a memphis 1500D. this will be going into a 98 explorer, what size box should i go with im mostly looking for spl but want it to sound good also. any help would be appreciated.

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[jeepintn 10+ year member]

around 15 cubes i would assume, tuned to 33hz

 

[PESteele 10+ year member]

id go with more of 16-18 and if you used copper coils id go with prob 32 and alum around 35

 

[Memphis4L 10+ year member]

id go with more of 16-18 and if you used copper coils id go with prob 32 and alum around 35

what would be better the copper or alum. coils, does it really matter that much?

 

[PESteele 10+ year member]

copper helps the lows and sounds better. I guess alum is more for spl