need help

[backyardbuilt 10+ year member]

I cant make up my mind on what to buy. I have between 9 and 10 cubes to work with. my amp is a hifonics XXV Cyclops which runs at 4000 by 1 at 1. I have it narrowed down to three choices. I want spl and its all going into a show truck.

1. 4 DD 3512s

2. 2 DD 9515s

3. 2 DD 9518s if they will fit

Thanks for the help.

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[memphis_vette 10+ year member]

9518's if fit if not go w/ 9515's

 

[backyardbuilt 10+ year member]

do u think 9.5 cubes is enough for the 18's