Box Design for 2 18's 1800w RMS each tuned to round 40Hz HELP!!??

[BassDownLow89]

Are you looking for something like this?

[bighossf150]

Are you looking for something like this?

That box looks way too small for 2 18"s and that port is tiny, with 7 cubes stick to just 1 of the 18"s

[BassDownLow89]

Are you looking for something like this?

That box looks way too small for 2 18"s and that port is tiny, with 7 cubes stick to just 1 of the 18"s

Yea I was just going off of his measurements that he gave. They definitely need a bigger box though

[Yates]

I could make it taller but then I can't see out my back window so much how much more cubic feet would I need for having 2

[Yates]

BassDownLow89 thank you

[Yates]

so is how much more room do I need for having 2 18's

[BassDownLow89]

Well this gives you 4.92 cubic ft per sub its 22" high instead of 16.5. Its just over 37hz. Its also double baffled.