best sub for 18x18x28 box ?

[chrisstanton32 10+ year member]

thinking about sacrificing my 40 seat in my 2011 F150 for more bass compared to under my seats..

I have around 2 cubes under my seats giving me enough room for 2 maybe 3 sa8's ported.

How many cubes do I have for a box 18x18x28? and what is the best sub for this size?

How much better would it be compared to the 2/3 sa8's ported?

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[Falcons 5,000+ posts]

needs more info

 

[chrisstanton32 10+ year member]

needs more info

I have a 1250watt amp but I don't mind getting something bigger

price isn't an issue

what other information do you need?

 

[Falcons 5,000+ posts]

like what is the tuning of the box lol

 

[chrisstanton32 10+ year member]

like what is the tuning of the box lol

Idk because the box isn't built yet. So it can be anything.